Journal articles: 'Drilling performance'

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SUN, Hao, and Kazuomi KUSUMOTO. "Drilling Performance of Plasma Arc Drilling Method." QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY 28, no. 4 (2010): 421–26. http://dx.doi.org/10.2207/qjjws.28.421.

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Bani Mustafa, Ahmed, Ahmed K. Abbas, Mortadha Alsaba, and Mamoon Alameen. "Improving drilling performance through optimizing controllable drilling parameters." Journal of Petroleum Exploration and Production Technology 11, no. 3 (February 24, 2021): 1223–32. http://dx.doi.org/10.1007/s13202-021-01116-2.

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AbstractThe prediction of the drilling rate of penetration (ROP) is one of the key aspects of drilling optimization due to its significant role in reducing expensive drilling costs. Many variables could affect ROP, which can be classified into two general categories; controllable operational variables and uncontrollable or environmental variables. Minimizing the drilling cost can be achieved through optimizing the controllable drilling parameters. As a direct result, the drilling speed will be increased while maintaining safe practices. The primary purpose of this study is to address the simultaneous impact of controllable parameters such as weight on bit (WOB), revolutions per minute, and flow rate (FR) on the rate of penetration (ROP). Response surface methodology was applied to develop a mathematical relation between operational controllable drilling parameters and ROP. To accomplish this, actual field datasets from several wells drilled in Southern Iraq in different fields were used. The second purpose of this study was to identify all prospective optimal ranges of these controllable parameters to obtain superior drilling performance with an optimum ROP. The obtained results showed that the developed model offers a cost-effective tool for determining the maximum ROP as a function of controllable parameters with reasonable accuracy. In addition, the proposed model was used to estimate optimal combinations of controllable drilling parameters for various depths. The results have shown that FR has the most significant effect on ROP variation with a sum of squares values of 23.47. Applying high WOB does not permanently improve ROP but could result in reducing ROP for some cases. The developed mechanical specific energy model for polycrystalline diamond compact (PDC) bit with vertical and deviated wells can estimate combinations of controllable drilling parameters. The developed model can be successfully applied to predict and optimize the drilling rate when using PDC bits, hence reducing the drilling time and the associated drilling cost for future wells.

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Ward, Chris, and Espen Andreassen. "Pressure-While-Drilling Data Improve Reservoir Drilling Performance." SPE Drilling & Completion 13, no. 01 (March 1, 1998): 19–24. http://dx.doi.org/10.2118/37588-pa.

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Yue, Qian Sheng, Qing Zhi Yang, Shu Jie Liu, Bao Sheng He, and You Lin Hu. "Rheological Properties of Water Based Drilling Fluid in Deep Water Drilling Conditions." Applied Mechanics and Materials 318 (May 2013): 507–12. http://dx.doi.org/10.4028/www.scientific.net/amm.318.507.

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The rheological property of the drilling fluid was one of the focus problems in deep-water drilling, which was widely concerned. In the article, the viscosity-temperature properties of commonly used water soluble polymeric solution, polymeric brine solution, bentonite slurry, polyacrylamide-potassium chloride drilling fluid with different densities and water-base drilling fluid systems commonly used for China offshore well drillings were studied. 4°C-to-20°C viscosity ratio and 4°C-to-20°C YP ratio were used to judge the thickening level of drilling fluids due to low temperature. The experimental results show that on the condition of without considering the influence of pressure on the rheological property of water-base drilling fluid, its viscosity and yield point raised obviously with the decrease of temperature, but the increase level is proximately the same, its 4°C-to-20°C apparent viscosity ratio is basically within the 1.50. Analysis indicates that the viscosity of water-base drilling fluid depends on the viscosity of dispersed media. The performance of water medium determines the viscosity-temperature property of the water-based drilling fluid. It is proposed that in deep water drillings, if a water-base drilling fluid is used, it is not necessary to emphasize the influence of deep water and low temperature on the flowability. On the condition of guaranteeing wellbore stability and borehole cleaning, it is more suitable for using the water-base drilling fluid with low viscosity and low gel strength for deep water well drillings.

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A. AL-Mahasneh, Mehaysen. "Optimization Drilling Parameters Performance During Drilling in Gas Wells." International Journal of Oil, Gas and Coal Engineering 5, no. 2 (2017): 19. http://dx.doi.org/10.11648/j.ogce.20170502.12.

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Konate, Nabe, and Saeed Salehi. "Experimental Investigation of Inhibitive Drilling Fluids Performance: Case Studies from United States Shale Basins." Energies 13, no. 19 (October 2, 2020): 5142. http://dx.doi.org/10.3390/en13195142.

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Shale formations are attractive prospects due to their potential in oil and gas production. Some of the largest shale formations in the mainland US, such as the Tuscaloosa Marine Shale (TMS), have reserves estimated to be around 7 billion barrels. Despite their huge potential, shale formations present major concerns for drilling operators. These prospects have unique challenges because of all their alteration and incompatibility issues with drilling and completion fluids. Most shale formations undergo numerous chemical and physical alterations, making their interaction with the drilling and completion fluid systems very complex to understand. In this study, a high-pressure, high-temperature (HPHT) drilling simulator was used to mimic real time drilling operations to investigate the performance of inhibitive drilling fluid systems in two major shale formations (Eagle Ford Shale and Tuscaloosa Marine Shale). A series of drilling experiments using the drilling simulator and clay swelling tests were conducted to evaluate the drilling performance of the KCl drilling fluid and cesium formate brine systems and their effectiveness in minimizing drilling concerns. Cylindrical cores were used to mimic vertical wellbores. It was found that the inhibitive muds systems (KCl and cesium formate) provided improved drilling performance compared to conventional fluid systems. Among the inhibitive systems, the cesium formate brine showed the best drilling performances due to its low swelling rate and improved drilling performance.

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You, F. Q., R. Zhang, and Yong Guo Wang. "Study on Deep Hole Drilling Process and Cutting Performance." Key Engineering Materials 866 (October 2020): 42–53. http://dx.doi.org/10.4028/www.scientific.net/kem.866.42.

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In deep hole machining, drilling parameters for twist drills have an important impact on tool life and economic efficiency. In order to explore the influence of drilling parameters on twist drills, this paper established a drilling model for twist drill 45 steel, orthogonal experiments were designed. AdvantEdge FEM finite element software was used to simulate the drilling force, torque and drilling temperature. The drilling force, torque and drilling temperature were analyzed by using the finite element simulation value as the orthogonal experimental value. In order to ensure that the simulation results have certain reference value, the drilling experiment was carried out in order to ensure the simulation results have reference value. Finally, the optimal combination of drilling parameters was obtained.

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Wang, Nan Nan, Yong Ping Wang, Dong Zhang, and Hui Min Tang. "Micro Foam Drilling Fluid System Performance Research and Application." Advanced Materials Research 868 (December 2013): 601–5. http://dx.doi.org/10.4028/www.scientific.net/amr.868.601.

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Micro foam drilling fluid has irreplaceable advantages in reservoir protection, drilling speed, improve the cementing quality and leak plugging, especially suitable for the "three low" Daqing peripheral oilfield Haita area. Indoor the foaming agent, foam stabilizing agent were screened, Preferably choose the efficient composite foaming agent, stabilizer and thickener, the drilling fluid system is transformed into micro foam drilling fluid system. And evaluate the inhibition, anti temperature, anti pollution (anti clay, calcium, anti kerosene) reservoir protection capability, The micro foam drilling fluid leakage, oil reservoir protection, speed up mechanism and micro foam drilling fluid rheological characteristics were studied, Set up a specific rheological model of Micro Foam Drilling fluid, According to the characteristics of Gulong oilfield,R&D the calculation software of Micro Foam drilling fluid density changes with the temperature, pressure and provide guidance for safe drilling. Field application shows that the system has the advantages of simple preparation,convenient maintenance, easy transformation, drilling fluid properties can meet the requirements of drilling technology, To ensure the safe, fast, and high quality drilling of oil and gas,reduce pollution,improve the productivity of a single well.

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Ni, Jing, Xiaotian Zeng, M. S. H. Al-Furjan, Huijun Zhao, Liming Guan, Zhi Cui, and Lidong Han. "Effect of Drilling Parameters on Machining Performance in Drilling Polytetrafluoroethylene." Materials 15, no. 19 (October 6, 2022): 6922. http://dx.doi.org/10.3390/ma15196922.

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Polytetrafluoroethylene (PTFE) plays an important role in semiconductor manufacturing. It is an important processing material for the key sealing components in the field of immersion lithography. The lack of research related to the mechanical processing of PTFE leads to many challenges in producing complex parts. This paper conducted a drilling experiment on PTFE. The effect of cutting parameters on the drilling performance was investigated. Thrust, torque, surface roughness, and drilling temperature were used to evaluate the influence of cutting parameters on drilling performance. In addition, the empirical mathematical models of thrust and torque were developed using analysis of variance (ANOVA). The results indicated that the spindle speed had the most important effect on the thrust and the feed rate had the most significant effect on the torque. The lowest values of thrust and torque were, respectively, 22.64 N and 0.12 Nm, achieved in the case of spindle speed of 5000 rev/min, and feed rate of 50 mm/min. The surface quality is also best at this cutting parameter. Studies have shown that higher spindle speeds with lower feed rates are ideal parameters for improving the drilling performance and machining quality of PTFE. In addition, it was found that the temperature differences due to different drilling depths were related to chip accumulation. Surface roughness inconsistencies at various locations in the inner wall of the hole were influenced by chip adhesion during machining. This paper provides a suggestion for optimizing cutting parameters and hole quality.

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Zhang, Jianguo, Juan C. Rojas, and David E. Clark. "Stressed-Shale Drilling Strategy--Water-Activity Design Improves Drilling Performance." SPE Drilling & Completion 23, no. 04 (December 1, 2008): 385–93. http://dx.doi.org/10.2118/102498-pa.

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Bybee, Karen. "Benchmarking Drilling Performance of MODU Operating Practices for Deepwater Drilling." Journal of Petroleum Technology 57, no. 04 (April 1, 2005): 52–54. http://dx.doi.org/10.2118/0405-0052-jpt.

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Kim, Dae-Ji, Jaewon Kim, Booyeong Lee, Min-Seok Shin, Joo-Young Oh, Jung-Woo Cho, and Changheon Song. "Prediction Model of Drilling Performance for Percussive Rock Drilling Tool." Advances in Civil Engineering 2020 (December 12, 2020): 1–13. http://dx.doi.org/10.1155/2020/8865684.

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This study suggests a method for quantitatively estimating the drilling performance of the down-the-hole (DTH) hammer during percussive drilling of rock surfaces. A pneumatic dynamic model of the DTH hammer was developed that considers the mass flow rate relations representing the orifice opening areas of the air tube, the piston, and bit flushing channels. A drill bit motion model was developed to represent the dynamics of a drill bit impacted by a dropped piston and explain the impact stress propagation and rock-crushing mechanism. The rock-crushing effect of the drill button bit was measured through a piston drop test. The pneumatic hammer model and drill bit motion model were then combined in a prediction model to determine the impact efficiency according to different rock types (i.e., soft, medium-hard, and very hard). The drilling efficiency was defined as the input value of the prediction model, which was used to simulate the drilling performance of DTH hammers considering the rock type and dynamic effect of the drill bit. Finally, the simulation results were compared with the results of in situ drilling tests for verification.

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Sellars, Andrew, Thivanka Dedigama, and Mohammad Zaman. "Roma development drilling – evolution of well design and drilling performance." APPEA Journal 59, no. 2 (2019): 814. http://dx.doi.org/10.1071/aj18254.

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Santos’ Roma field, located in the Surat Basin, has been producing coal seam gas (CSG) since 1988; however, development drilling did not commence until 2011. Since this time, well design has evolved to maximise access to coals and operability for artificial lift systems. Concurrently, performance has dramatically improved through scale of sanctioned work programs and revised contracting strategies, enabling continuous and sustainable time and cost reductions. This paper reviews Santos’ development drilling activity in the Roma CSG field since 2011, highlighting critical events and step changes. The following aspects are addressed: • Evolution of well design: A series of well designs have been trialled, ranging from deviated to vertical, fracture stimulated to open-hole slotted liner well types. Collaboration with both Reservoir Engineering and Production Operations have been critical in arriving at a fit-for-purpose design. • Effect of the industry downturn: The industry downturn spanning 2014–2016 presented an opportunity to reset and rationalise execution approach. • Operating and contracting model: The updated model focused on utilising a consistent, fit-for-purpose rig fleet and service companies, supported by lean office and field based operations teams. • Benefits of large scale, continuous work programs: The scale and continuity of operations are key to achieving continuous and sustainable time and cost reductions. • Opportunities: Future opportunities have been identified for ongoing optimisation in a changing market.

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Er, Nilay, Alper Alkan, Serim Ilday, and Erman Bengu. "Improved Dental Implant Drill Durability and Performance Using Heat and Wear Resistant Protective Coatings." Journal of Oral Implantology 44, no. 3 (June 1, 2018): 168–75. http://dx.doi.org/10.1563/aaid-joi-d-16-00114.

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The dental implant drilling procedure is an essential step for implant surgery, and frictional heat in bone during drilling is a key factor affecting the success of an implant. The aim of this study was to increase the dental implant drill lifetime and performance by using heat- and wear-resistant protective coatings to decrease the alveolar bone temperature caused by the dental implant drilling procedure. Commercially obtained stainless steel drills were coated with titanium aluminum nitride, diamond-like carbon, titanium boron nitride, and boron nitride coatings via magnetron-sputter deposition. Drilling was performed on bovine femoral cortical bone under the conditions mimicking clinical practice. Tests were performed under water-assisted cooling and under the conditions when no cooling was applied. Coated drill performances and durabilities were compared with those of three commonly used commercial drills with surfaces made from zirconia, black diamond. and stainless steel. Protective coatings with boron nitride, titanium boron nitride, and diamond-like carbon have significantly improved drill performance and durability. In particular, boron nitride-coated drills have performed within safe bone temperature limits for 50 drillings even when no cooling is applied. Titanium aluminium nitride coated drills did not show any improvement over commercially obtained stainless steel drills. Surface modification using heat- and wear-resistant coatings is an easy and highly effective way to improve implant drill performance and durability, which can improve the surgical procedure and the postsurgical healing period. The noteworthy success of different types of coatings is novel and likely to be applicable to various other medical systems.

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Otitigbe, F. E. "Production and performance evaluation of drilling mud using specific locally sourced materials." Applied Research Journal of Science and Technology 2, no. 1 (December 31, 2020): 25–33. http://dx.doi.org/10.47721/arjst20200201018.

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The importation of drilling mud into Nigeria, apart from draining the nation’s reserves in hard currency, is also inimical to the local content policy being currently promoted for the oil industry in the country. Thus, the need for local sourcing of bentonitic clays or close substitutes has become imperative. This study proffers an alternative to the importation of drilling mud and shows an experimental approach on the preparation of drilling mud with readily available locally sourced materials, such as pulverized groundnut husk, tronna, burnt palm-head sponge powder, bentonite, barite and starch. Materials used for the study were collected from the Mubi local government area of Adamawa State, Akwanga local government area of Nassarawa State and Jos-north local government area of Plateau State. The mineralogical and physicochemical properties of the locally sourced bentonite and barite samples were determined by means of X-ray fluorescent spectroscopy (XRF), X-ray diffraction spectroscopy (XRD) and cationic exchange capacity (CEC), all carried out in the Nigerian Mining institute of Geosciences, Jos Plateau State. The drilling mud was produced and its physicochemical and rheological properties carried out based on the API mud production standards. Results of cost analysis showed that producing 100 kg water-base drilling mud from locally source material, cost N 14, 715.75, which is 22.3% cheaper than conventional drilling mud imported into the country. Keywords–Drilling mud, mineralogical properties, rheological properties, locally sourced materials

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Simisinov, Denis, Konstantin Porozhkiy, Olga Pozdnyakova, and Ivan Zakharov. "Analysis of methods for assessing the drilling tool performance." E3S Web of Conferences 177 (2020): 03003. http://dx.doi.org/10.1051/e3sconf/202017703003.

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The analysis of methods for assessing the drilling tool performance using various methods was performed. The applicability of the methods was assessed. Methods based on periodic comparative tests were examined in detail. The technical level and operational efficiency of the drilling tool is determined by the resource (tool driftage), drilling speed, durability, power supplied to the bottom of the well. The correct choice of a drilling tool is ultimately determined by economic assessments. The specific drilling costs are proposed to be determined taking into account the cost of one machine hour, the sharpening of crowns and the average mechanical drilling speed.

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Mensa-Wilmot, Graham. "Technology Focus: Bits and Bottomhole Assemblies (December 2020)." Journal of Petroleum Technology 72, no. 12 (December 1, 2020): 52. http://dx.doi.org/10.2118/1220-0052-jpt.

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Achieving and sustaining performance drilling’s intended benefits - improved drilling efficiency with minimal down-hole tool failures and the associated reductions in project cycle time and operational costs - requires new protocols in drilling-system analysis. Drilling-system components [bits, reamers, bottomhole assemblies (BHAs), drive systems, drilling parameters, and hydraulics] must be analyzed independently for their relevance on the basis of application types and project challenges. Additionally, the drilling system must undergo holistic evaluations to establish functional compatibility and drilling-parameter responses and effects, considering project objectives and key performance indicators. This comprehensive physics-based approach ensures durability and rate-of-penetration (ROP) improvements without compromising stability and downhole tool reliability. The success of this process is strongly dependent on vibration control. Considering the different vibration modes - axial, torsional, lateral, stick/slip, and whirl - and their many dissimilar initiating and amplification factors, their sources always must be identified. Researchers have challenged the usual classification of erratic torque and revolution-rate behavior as stick/slip. BHA design and drilling-parameter ranges, considering blade spacing, can produce unfavorable tubular deformations, contact points, and side loads. This condition creates torque and revolution-rate fluctuations that have been linked to lateral vibrations. Awareness of these vibration modes, particularly their sources and intensifying conditions, ensures development of effective remediation solutions. Improved borehole quality, with regard to tortuosity and rugosity, must always be considered as a critical requirement in performance drilling. This condition reduces borehole drag, enhances drilling-parameter transfer, and improves ROP and overall run lengths. Most importantly, it reduces vibrations, leading to improvements in downhole tool life and directional drilling performance. In addition to formation drillability effects, drilling-systems components and operational practices have strong effects on borehole quality. Consequently, this must be part of the drilling-system analysis. The industry’s advancements at developing physics-based solutions for drilling challenges have matured. Continuing to ask questions that help us understand how and why we fail or succeed puts more wind beneath our wings to accelerate learning and reduce cycle times. Recommended additional reading at OnePetro: www.onepetro.org. SPE 200740 Digital Twins for Well Planning and Bit-Dull-Grade Prediction by Mehrdad Gharib Shirangi, Baker Hughes, et al. SPE 201616 Validating Bottomhole-Assembly Analysis Models With Real-Time Measurements for Improved Drilling Performance by Mark Smith, Premier Directional Drilling, et al. IADC/SPE 199658 Simulation and Measurement of High-Frequency Torsional Oscillation (HFTO)/High-Frequency Axial Oscillation and Downhole HFTO Mitigation: Knowledge Gains Continue by Using Embedded High-Frequency Drilling Dynamics Sensors by Junichi Sugiura, Sanvean Technologies, et al.

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Shigin, A. O., D. A. Boreyko, N. D. Tskhadaya, and D. Yu Serikov. "Comparative analysis of roller drill bit performance." SOCAR Proceedings, SI2 (December 30, 2021): 1–7. http://dx.doi.org/10.5510/ogp2021si200536.

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Currently, roller bits are widely used in rock drilling, which are devices with rotating rollers armed with teeth. There are various approaches in assessing the effectiveness of rock destruction by a roller drilling tool, which can be conditionally divided into structural and technological ones. In addition, all the efficiency factors of the roller bit are related to the correspondence of its characteristics and the drilling process to the properties of the rock it destroys. The article analyzes the operating conditions of the roller bit during drilling of rocks of various hardness. On the example of operation of a two-screw drill bit, the process of power interaction of the toothed weapon with rock is considered depending on various factors, such as the shape and pitch of the teeth, angle of inclination, sharpness of the tooth and others. It is shown that kinematic characteristics of interaction of toothed armament with drilled rock have a significant influence on efficiency of process of face destruction. Keywords: drill bit; drilling tool; destruction; drilling; roller cutter; rock.

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Popp, Trevor J., Steffen B. Hansen, Simon G. Sheldon, and Christian Panton. "Deep ice-core drilling performance and experience at NEEM, Greenland." Annals of Glaciology 55, no. 68 (2014): 53–64. http://dx.doi.org/10.3189/2014aog68a042.

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AbstractThe NEEM deep ice-core drilling in northwest Greenland was completed in summer 2010 after three seasons, which included establishing all drilling infrastructure. Normal drilling operations in the main borehole were declared terminated at 2537.36 m below the surface, when further penetration was stopped by a stone embedded in the ice in the path of the drill head. The design and implementation of the drilling operation strongly resembled the NGRIP drilling program. The NEEM drill was an extended version of the Hans Tausen (HT) drill, with specific modifications to optimize its use with the highly viscous Estisol-240/Coasol drill fluid used at NEEM. Modification to the drill and its performance in the new drilling fluid was largely satisfactory and successful. Throughout the drilling, special consideration was given to the way chips were transported and collected in a new chip chamber, including the consequences of drilling a larger borehole diameter than with previous drill operations that used the HT family of drills. The problems normally associated with warm ice drilling near the base of an ice sheet were largely absent at NEEM.

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Zazarli Shah, Mohamad Safwan, Arina Sauki, Wan Zairani Wan Bakar, Nurul Aimi Ghazali, and Azlinda Azizi. "Drilling Fluid Design for Shale Gas Drilling." Advanced Materials Research 1113 (July 2015): 617–24. http://dx.doi.org/10.4028/www.scientific.net/amr.1113.617.

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Shale gas nowadays is an important source of unconventional gas. The limited conventional gas supply makes the unconventional sources as a new source of gas. In this research, the aim is to design a mud formulation that can carry out essential functions of mud for shale gas drilling. Commonly for shale gas drilling, water based mud is used. However, water based mud is ineffective when dealing with water-sensitive shale. The alternative way to deal with this type of shale is using synthetic-based mud (SBM) or oil-based mud (OBM). OBM is an effective mud while drilling well. However, it is toxic and gives negative impact to environment. SBM somehow is more environmental friendly compared to oil based and ester is one of the synthetic based fluids. In order to prove this statement, a toxicity test was carried out to investigate the impact of ester based mud on selected marine life. The results of the test were compared with past research results. The ester use in this research is methyl-ester C12-C14 derived from palm oil and the mud was formulated at different oil-water ratios which are 70/30, 80/20 and 90/10, respectively and the best rheological performance can be seen at 80/20 oil-water ratio. Then, the performance of this mud had been compared to other types of mud which are sarapar-based and WBM. The findings revealed that the rheological performance of ester based mud is comparable with common based mud used for shale gas drilling. Apart from that, it is less toxic than other based mud which can maintain 60% prawn’s survival even after 96 hours exposure in 100,000 ppm of mud concentration in artificial seawater.

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Toshov, Javoxir, and Murkhriddin Mamatov. "Modern high-performance drilling tools for quarry drilling rigs ball bits." Asian Journal of Multidimensional Research (AJMR) 10, no. 3 (2021): 348–52. http://dx.doi.org/10.5958/2278-4853.2021.00135.x.

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Jeffery, Christopher, and Andrew Creegan. "Adaptive Drilling Application Uses AI To Enhance On-Bottom Drilling Performance." Journal of Petroleum Technology 72, no. 08 (August 1, 2020): 45–47. http://dx.doi.org/10.2118/0820-0045-jpt.

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Peng, Xiaoyong, and Haidong Jiang. "Drilling Fluid Formula and Performance for Slow Angle Wireline Core Drilling." International Journal of Heat and Technology 38, no. 2 (June 30, 2020): 479–86. http://dx.doi.org/10.18280/ijht.380225.

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Stewart, S. A., and J. Holt. "Improved Drilling Performance through Integration of Seismic, Geological and Drilling Data." Geological Society, London, Memoirs 29, no. 1 (2004): 303–10. http://dx.doi.org/10.1144/gsl.mem.2004.029.01.28.

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Li, Siqi, Shenglei Tian, Wei Li, Zhao Huan, Xin Ling, and Li Zhuolun. "Rock Breaking Mechanism and Drilling Performance of Harmonic Vibro-Impact Drilling." IOP Conference Series: Earth and Environmental Science 570 (November 12, 2020): 022036. http://dx.doi.org/10.1088/1755-1315/570/2/022036.

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Liu, Qing Wang, Shou Song Zhang, Zhen Zhong Fan, Ji Gang Wang, and Yan Min Lou. "The Performance Evaluation of Potassium Drilling Fluid System." Applied Mechanics and Materials 423-426 (September 2013): 635–39. http://dx.doi.org/10.4028/www.scientific.net/amm.423-426.635.

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The basic prescription of the potassium sulfate drilling fluid is: 5% bentonite+0.4%Na2CO3+5.0%K2SO4+1000ppmDCL+200ppmDesco+100ppmAlcome+500ppmSAP+1000ppmLT+1000ppmKEL. The content of K+ is 50000mg/L. The drilling fluid has appropriate viscosity, gel and filter loss. The shale rolling recovery rate is bigger than 85%. The static swelling rate is smaller than 2%. The corn damage is less than 20%. The mechanism of protect formation is the K+ ability of preventing the clay from hydrating and swelling, the adsorption ability of formation protecting agent and the cooperating role of K+ and formation protecting agent. The potassium sulfate drilling fluid was used in fang-3 outer section of the Song-fang-tun oilfield. It was shown that the drilling fluid could meet the drilling demand in this oilfield.

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Goel, Harsha, and Pulak M. Pandey. "Performance evaluation of different variants of jet electrochemical micro-drilling process." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 232, no. 3 (May 26, 2016): 451–64. http://dx.doi.org/10.1177/0954405416646689.

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The article describes fabrication of an experimental setup which could be used for electrochemical drilling process to produce micro-holes in a copper workpiece with its different variants, namely, jet electrochemical micro-drilling, air-assisted jet electrochemical micro-drilling, ultrasonic-assisted jet electrochemical micro-drilling, and pulsed direct current–jet electrochemical micro-drilling process. Process parameters like voltage, electrolyte concentration, interelectrode gap, and electrolyte pressure have been selected to find out their effects on the process responses, namely, hole taper and material removal rate in all the above process. Attachments for air assistance and ultrasonic vibration application have been fabricated and incorporated in the setup. The effects of ultrasonic vibrations and the pulsed direct current voltage on the process responses like material removal rate and hole taper have been investigated. The effect of application of ultrasonic vibrations on the electrolyte jet has been studied. The experimental findings of ultrasonic-assisted jet electrochemical micro-drilling were compared with the findings of jet electrochemical micro-drilling. Similarly, the findings of pulsed direct current–jet electrochemical micro-drilling were also compared with the results of pulsed direct current ultrasonic-assisted jet electrochemical micro-drilling experiments. It has been found that the ultrasonic vibrations have significant effect on the two process responses. From the results, it was observed that with the use of ultrasonic vibrations, the material removal rate has increased to significant level and the hole taper has been decreased than in jet electrochemical micro-drilling. Effects of the pulsed direct current voltage supply on jet electrochemical micro-drilling and (ultrasonic-assisted jet electrochemical micro-drilling) were also analyzed. Application of pulsed direct current voltage has improved the material removal rate and reduced the hole taper in jet electrochemical micro-drilling as well as in ultrasonic-assisted jet electrochemical micro-drilling. The experimental results concluded that ultrasonic assistance have generated the holes with greater material removal rate and lower hole taper and with continuous direct current and pulsed direct current voltage.

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Russell, Kenneth A., Colin Cockburn, Ruairidh McLure, Adrian Crawford, Mark Davison, Steve J. Jolley, Mudasser Kazi, Martin Koster, and Barry McGrath. "Improved Drilling Performance in Troublesome Environment." SPE Drilling & Completion 20, no. 03 (September 1, 2005): 162–67. http://dx.doi.org/10.2118/90373-pa.

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Carpenter, Chris. "Intelligent Drilling Advisory System Optimizes Performance." Journal of Petroleum Technology 72, no. 02 (February 1, 2020): 65–67. http://dx.doi.org/10.2118/0220-0065-jpt.

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Pyatykh, Aleksey, and Andrey Savilov. "Investigation of high performance drilling dynamics." Materials Today: Proceedings 19 (2019): 2174–78. http://dx.doi.org/10.1016/j.matpr.2019.07.367.

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Warren, T. M., and W. K. Armagost. "Laboratory Drilling Performance of PDC Bits." SPE Drilling Engineering 3, no. 02 (June 1, 1988): 125–35. http://dx.doi.org/10.2118/15617-pa.

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Du, Cuiming, Yanxia Xing, Liangpeng Hao, Peng Hu, and Songgang Chai. "Effects of CCL inorganic filler on hole performance in PCB drilling process." Circuit World 44, no. 4 (November 5, 2018): 161–64. http://dx.doi.org/10.1108/cw-11-2017-0069.

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Purpose This paper aims to investigate and document the effects of copper-clad laminate (CCL) inorganic filler on the hole performance in printed circuit boards drilling process. Design/methodology/approach Drilling of brittle laminates can result in hole cracking, layer-to-layer delamination and drill-bit wear and tool breakage. Adding large amount of fillers not only shortens the life of the drilling tool but also affects the drilling properties significantly regarding hole quality. This paper introduces the influence of filler content, type, hardness, particle size and the compounding method in the manufacture of the CCL on the drilling performance. Findings The filler content, filler type, hardness of filler, particle size of filler and the compounding method used for the filler have a great influence on the drilling properties of CCL. The higher the filler content, the larger the particle size and the more the hardness of the filler, the worse the drilling properties. The combination of hard particles like silica with softer particles can improve the drilling performance of CCL. Originality/value The paper describes what affects the drilling performance of CCL and how this knowledge can be used to design CCL with good drilling performance.

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Nemouchi, Samia, and Elias Hadjadj Aoul. "Improvement of the Hammer Drill Performance (Algerian Quarries Conditions)." Acta Universitatis Sapientiae, Electrical and Mechanical Engineering 12, no. 1 (December 1, 2020): 77–85. http://dx.doi.org/10.2478/auseme-2020-0006.

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Abstract The factors which influence the performance characteristics of a hammer drill are examined; drilling data are analyzed to determine these factors. Methods for selecting the appropriate drilling are also highlighted. Two models are used in order to compare optimal drilling parameters. The main one is the machine output.

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Xiao, Bing, Hong Jun Xu, Hong Hua Su, Yu Can Fu, and Jiu Hua Xu. "Machining Performance on Multi-Layer Brazed Diamond Tools." Key Engineering Materials 416 (September 2009): 598–602. http://dx.doi.org/10.4028/www.scientific.net/kem.416.598.

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An attempt has been made to investigate the new generational manufacturing technology for multi-layer diamond tools by brazing. A kind of new multi-layer brazed diamond core drills with random grains distribution was made by mixing diamond particles with brazing alloy powders. And a preliminary machining performance experiment was carried out through drilling granite. The testing results show the typical topography of the multi-layer brazed diamond core drills after drilling granite, just like that of multi-layer sintered ones, is that diamond grits drag long tails. Different from multi-layer sintered diamond core drills, no grit pull-outs can be seen during the whole drilling process because of chemical metallurgical effect between diamond grit and brazing alloy, the same as monolayer brazed diamond core drills. The main drawback to this kind of multi-layer brazed diamond tools is each individual particle is not subjected to the same drilling force throughout the drilling operation because of random grain distribution. This leads to premature fracture of the leading particles. Similarly, because large gaps between particles exist, the bond is being exposed to the workpiece, which leads to erosion of the bond. The overall performance is lower tool lives and slower drilling speeds. Therefore, ideally, diamond particles should be evenly distributed throughout the bond, which means they are all subject to the same drilling forces and the multi-layer brazed diamond tool is operated at its optimum efficiency.

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Ozbayoglu, M. E., M. Sorgun, A. Saasen, and K. Svanes. "Hole Cleaning Performance of Light-Weight Drilling Fluids During Horizontal Underbalanced Drilling." Journal of Canadian Petroleum Technology 49, no. 04 (April 1, 2010): 21–26. http://dx.doi.org/10.2118/136689-pa.

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Feder, Judy. "BHA-Design Approach Improves Drilling Performance and Wellbore Quality." Journal of Petroleum Technology 72, no. 12 (December 1, 2020): 57–58. http://dx.doi.org/10.2118/1220-0057-jpt.

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This article, written by JPT Technology Editor Judy Feder, contains highlights of paper SPE 199617, “Drilling Performance Evaluation Using Advanced BHA Modeling and Field Validation,” by Jeremy Greenwood, SPE, Julien Marck, SPE, and Vakkeyil Naveen Nair, Halliburton, et al., prepared for the 2020 IADC/SPE International Drilling Conference and Exhibition, Galveston, Texas, 3-5 March. The paper has not been peer reviewed. Implementing a physics-based digital twin of a drilling system can enable the drilling team to leverage data at each stage of the engineering process to deliver more-consistent, repeatable drilling performance and improved borehole quality, which in turn enables drilling farther and faster while increasing downhole tool life. The complete paper discusses a new performance-evaluation methodology that combines bottomhole assembly (BHA) modeling with field data. BHA modeling simulates the drilling process accurately to establish key performance indicators (KPIs) to help optimize BHA designs to deliver improvements in drilling performance and wellbore quality. The model also can estimate quantities such as microtortuosity that are not directly measured by standard equipment. Importance of Effective BHA Performance Evaluation Determining the cumulative effect of BHA behavior during drilling on the quality of the wellbore and the subsequent impact on performance and life of the BHA is an important goal for improving overall drilling and well-delivery efficiencies. A higher-quality wellbore not only has a positive effect on reducing the time required for all drilling, casing, or completions running operations; in curved holes, it can also extend the life of the drilling equipment by reducing the rate of accumulation of fatigue and reducing the amount of work the bit is required to perform. This leads to longer runs because the system is more mechanically efficient and has a reduced equipment failure rate. Developing an effective set of measurements allows for an objective comparison of different BHA designs and stabilization, bit selections, and downhole drive systems of rotary steerable tools, motors, or turbines. This quantification of BHA performance can be used to improve BHA designs in terms of component stiffness, amount and position of stabilization, type and configuration of the drive system, and bit-design features. Defining terms to describe borehole quality at different scales is necessary to develop indices that are comparable across wells and that reflect any deviation of the wellbore from a perfectly smooth path. To fully quantify the mechanical effect of wellbore quality on the BHA, a wellbore-propagation model was developed to replicate the borehole and determine the accumulated stresses as the BHA passes through it. This approach overcomes the limitations of not having the required resolution of downhole measurements that accurately describe the wellbore trajectory on the smaller scale. The validation of the propagation model has been completed on multiple runs with examples presented in the complete paper.

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Cao, Xiao Chun, Yi Qin, Yan Na Zhao, and Kun Ke. "Basic Performance Research of Polymer Intercalation Clay." Advanced Materials Research 578 (October 2012): 183–86. http://dx.doi.org/10.4028/www.scientific.net/amr.578.183.

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Using the preliminary research of the polymer properties, the different between the physical and chemical properties of new polymer-clays nanometer composites and clay have been studied. Different polymers are used to evaluate experiment. Based on a large number of lab experiments, the changes of rheological property and API filtration property of polymer-clay drilling fluids nanometer composites are studied. The results show that clay particles could become smaller and the composites drilling fluid have the role of controlling loss and enhancing cake quality. The prepared composites could be used to solve the technical problems in drilling fluid.

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He, Jingyuan, Honghua Su, Ning Qian, and Pengfei Xu. "Machining Performance Analysis of Rotary Ultrasonic-Assisted Drilling of SiCf/SiC Composites." Crystals 12, no. 11 (November 17, 2022): 1658. http://dx.doi.org/10.3390/cryst12111658.

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An SiCf/SiC composite has the following excellent properties: high strength, low specific gravity, and high temperature resistance, which has great prospects in the combustion chamber of rockets or aero engines. Hole-making in SiCf/SiC parts is an important processing method. Generally, water-based or oil-based coolants are avoided, so dry drilling is the primary hole-making approach for SiCf/SiC. However, the abrasion resistance and high hardness of SiCf/SiC often lead to fast tool wear as well as serious damage to the fiber and matrix during dry drilling. This study proposes an innovative strategy for hole-making in SiCf/SiC parts—rotary ultrasonic-assisted drilling (RUAD) using an orderly arranged brazed diamond core drill. The influence of tool life and wear on drilling accuracy is analyzed. Additionally, the impacts of the process parameters of conventional drilling (CD) and RUAD on drilling force, torque, the surface roughness of the hole wall, and the exit tearing factor are investigated. The results show that the orderly arranged brazed diamond core drill exhibits longer tool life and higher accuracy in hole-making. Meanwhile, compared with CD, RUAD with the proposed core drill effectively improves the drilling quality and efficiency, and reduces the force and torque of drilling. The range of process parameters for dry drilling is broadened.

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Chen, Li. "Optimization Design of Drilling Fluid Chemical Formula Based on Artificial Intelligence." Computational Intelligence and Neuroscience 2022 (October 4, 2022): 1–11. http://dx.doi.org/10.1155/2022/5465816.

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Through the research and development of the regression prediction function of support vector machine, this paper applies it to the prediction of drilling fluid performance parameters and the formulation design of drilling fluid. The research in this paper can reduce the experimental workload and improve the efficiency of drilling fluid formulation design. The apparent viscosity (AV), plastic viscosity (PV), API filter loss (FLAPI), and roll recovery (R) of the drilling fluid were selected as the inspection objects of the drilling fluid performance parameters, and the support vector machine was used to establish a model for predicting the drilling fluid performance parameters. This predictive model was used as part of the overall drilling fluid formulation optimization design model. For a given drilling fluid performance parameter requirement, this model can be applied to reverse the addition of various treatment agents, and finally, the prediction accuracy of the model is verified by experiments.

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Li, Hui, Feng Gao, Yan Li, and Lijing Bai. "Experimental Study on the Dry Drilling Nickel-Based Superalloy of CrAlYN Coated Carbide Bit." Materials 15, no. 12 (June 17, 2022): 4302. http://dx.doi.org/10.3390/ma15124302.

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Nickel-based superalloy is regarded as one of the materials with the poorest cutting and drilling performance. Additionally, there is much less research on the drilling of it. This paper aims to study the drilling performance of dry drilling nickel-based superalloy with uncoated and CrAlYN coated carbide bit. First of all, the primary and secondary factors influencing the machining performance of dry drilling nickel-base superalloy uncoated carbide bit were explored through an orthogonal test. Secondly, the self-prepared CrAlYN coated carbide drills, and uncoated drills were compared and analyzed from perspectives of service life, drilling force, drilling temperature, drill surface topography, failure mechanism, and machining surface quality. The research results are as follows: the drilling temperature is the primary factor affecting the drilling performance under dry drilling conditions. CrAlYN coating can obviously prolong the service life of tools, reduce the drilling force and drilling temperature, and improve the machining surface quality at lower rotational speeds. Moreover, the coated cemented carbide bit has a similar failure mode to the uncoated cemented carbide bit after the CrAlYN coating falls off in the wear zone of cemented carbide bit, which is mainly bonding wear on the rear tool surface and the front tool surface.

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Liu, Fei, and Yan Ling Wang. "Synthesis and Performance Study of the Nanomaterial Used to Stabilize the Reversible Invert Emulsion Drilling Fluid." Key Engineering Materials 744 (July 2017): 498–505. http://dx.doi.org/10.4028/www.scientific.net/kem.744.498.

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The reversible invert emulsion drilling fluids can achieve performance of oil based drilling fluid and solve the disadvantages associated by the oil based drilling fluid. This reversible invert emulsion drilling fluid can also focus the advantages of both oil based and water based drilling fluids. The surfactant emulsifier is the currently reported emulsifier used in the reversible invert emulsion. The stability of the reversible invert emulsion drilling fluid is very poor that can be known from the low emulsion breaking voltage. The dosage of the surfactant emulsifier is so much that it can increase the drilling cost and environmental pollution. In this paper, organic amine surfactant-modified nanoparticles are prepared and the modified nanoparticle which can be used to stabilize the reversible invert emulsion drilling fluid is chosen. The stability of the reversible invert emulsion drilling fluid stabilized by modified nanoparticles (emulsion breaking voltage>1100V) is better than the reversible invert emulsion drilling fluid stabilized by surfactant (450V<emulsion breaking voltage<600V). The dosage of the organic amine surfactant-modified nanoparticle emulsifier (2.4 wt.%) is less than the dosage of the surfactant emulsifier (4 wt.%), hence, reducing the drilling cost and environmental threat. The reversible invert emulsion drilling fluid stabilized by modified nanoparticles perform similar to the reversible invert emulsion drilling fluid stabilized by surfactant in the aspect of oiliness cuttings treatment. The reversible invert emulsion drilling fluid stabilized by modified nanoparticles also perform well in the aspect of oiliness cuttings treatment.

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Falih, Ghufran Falih, Asawer A. Alwasiti Alwasiti, and Nada S. Alzubaidi Alzubaidi. "Improving the Performance of Drilling Fluid Using MgO Nano Particles." Journal of Petroleum Research and Studies 8, no. 3 (May 6, 2021): 179–93. http://dx.doi.org/10.52716/jprs.v8i3.278.

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One of the most important factors that cause formation damage is drilling fluidinvasion caused by mud filtration. Hence, it is essential to minimize the mud filtration inorder to reduce its damage to the formation using drilling fluid additives that control andminimize the filtration rate. Magnesium Oxide (MgO) nanoparticles at different masses(0.01, 0.05, 0.07, 0.1, and 0.2) gm with water base mud have been investigated in thisresearch to measure its effect on the filtration rate. Four types of drilling fluid are used inthis research; API water base mud WBM, Saturated salt water mud, DURA THERM mudand polymer mud. Filtration rate was tested under high temperature high pressure (HTHP)conditions; at (75 and 100) C and (500 psi), and at room temperature and pressure at (100psi). The viscosity of all drilling fluid types is measured using a rotational viscometer atroom temperature and atmospheric pressure. In general, the results showed that addingMgO nano particle helped in reducing the filtration rate of drilling fluid, the best resultswere gained in DURA THERM mud and Saturated Salt Water Mud at MgOconcentrationof 0.07gm and 0.2gm, respectively; where the filtrate reduction 60% at 100C. Also, MgO addition improves rheological properties and drilling fluid stability

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Lv, Kai He, Xue Dong Wu, Tao Shi, Kuan Long Ren, and Yu Xia Liu. "An High-Performance Water-Based Drilling Fluid and its Application." Advanced Materials Research 476-478 (February 2012): 2304–10. http://dx.doi.org/10.4028/www.scientific.net/amr.476-478.2304.

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An high-performance water-based drilling fluid is a hot subject of research both at home and abroad in recent years. In this paper, the inhibition property and the influence of amino polyols AP-1 and aluminum polymer DLP-1 on drilling fluid properties were evaluated, on this basis, through the formula optimization, the high-performance water based drilling fluid was developed and and field applied. Both laboratory study and field application showed that aluminum polymer can reduce viscosity and filtration rate, and can effectively inhibit the hydration expansion of clay. Amino polyols had a little effect on the viscosity, gel strength and filtration of drilling fluid, but it had a good shale inhibition. This drilling fluid has good properties in rheology, filtration, inhibition and anti-contamination, with a satisfactory overall performance, which is helpful in solving wellbore instability that are due to unenven hydration or well developed micro fractures.

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Cao, Xiao Chun, Yan Yu Li, Dong Liang Yang, and Kun Ke. "Study on Preparation and Evaluation of Micro Zirconia Particles Used in Drilling Fluid." Advanced Materials Research 578 (October 2012): 175–78. http://dx.doi.org/10.4028/www.scientific.net/amr.578.175.

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This article explains how to prepare zirconia (ZrO2) mico particles and demonstrates how to evaluate the performance of drilling fluids containing ZrO2. Sheet ZrO2micro articles were prepared using hydrothermal synthesis method and were observed using particle image equipment. The performances of drilling fluids before and after various doses of ZrO2added were compared. The result shows that sheet ZrO2micro particles can adjust the rheological properties of drilling fluid.

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Rasyid, Aly. "Optimisasi Operasi Pemboran Di Basin Afrika Utara." PETRO:Jurnal Ilmiah Teknik Perminyakan 10, no. 2 (July 31, 2021): 60–65. http://dx.doi.org/10.25105/petro.v10i2.8809.

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Drilling optimization objective was to reduce costs, improve wellbore conditions and integrity for increasingly challenging reservoirs while establishing maximum safety performance and environmental custodianship. Even though the final result of a drilling operation is easily observed, what almost always goes unnoticed is the complexity of the issues involved in the planning and execution of a drilling operation and the number of topics involved in such a process. In this paper, as case study of the exploration drilling in Hamada region, North Africa has been evaluated. Over the period of 2006 to 2011, continued drilling improvement was achieved. Key elements in the optimization included focus on management drilling team structure, engineering well planning, improvements on managing drilling operations such as on site safety management practices, and also post drill analysis to implement lesson learn for the next well to be drilled. As the result, while drilling 26 wells during the 2006 until 2011, drilling days were successfully reduced from 87 days (first well) to the average 40 days, and very good safety record performance. Keywords : optimization, drilling cost, drilling performance

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Khuzina, L. B., and A. F. Shaikhutdinova. "TECHNOLOGY SOLUTION FOR IMPROVEMENTOF THE PDC DRILL BITS PERFORMANCE." Oil and Gas Studies, no. 4 (September 1, 2016): 84–87. http://dx.doi.org/10.31660/0445-0108-2016-4-84-87.

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The article is devoted to the problem of bringing the desired load to the drill bit and improving the technical and economic indexes of drilling at drilling the oil and gas wells. The authors propose a bottom-hole assembly (BHA) consisting of PDC bits, downhole oscillator, screw downhole motor, measuring-while drilling system and drill pipes. The results of the proposed assembly pilot tests are presented. The tests were conducted in well No. 6053 in Sheremetyev field, Tatarstan Republic.

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Ismail, Abdul Razak, Muhammad Syafiq Ab Rashid, Nurul Jannah Ismail, Wan Rosli Wan Sulaiman, and Mohd Zaidi Jaafar. "Improved Coefficient of Friction Using Different Types of Lubricants in Drilling Operation." Advanced Materials Research 1125 (October 2015): 210–14. http://dx.doi.org/10.4028/www.scientific.net/amr.1125.210.

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The key performance of any drilling operation depends heavily on the choice of drilling fluid used as well as how good it can overcome the drill pipe friction. It is essential that the drilling fluid be able to reduce bit wear, torque and drag. Drilling with oil-based drilling fluid offer less torque and drag. However, water based drilling fluid are cheaper and environmental friendly compared to oil-based and synthetic-based drilling fluids. Lubricants are added to drilling fluid to produce a thin film of liquid that separates the solid surfaces in contact to reduce the friction to an acceptable range. This study focused on the performance evaluation of two different commercial lubricants, which are EBL and EME salt to improve the lubricity of water based drilling fluid. The performances of lubricants were evaluated by ranging the concentrations from 1%, 2% and 3%. Fann Lubricity Tester is used to test the lubricity of these lubricants. The results reveal that the coefficients of friction for all lubricants were reduced after reaching the optimum concentration at the range of 1 - 2%. Some improvements were observed on the rheological properties such as plastic viscosity, yield point and gel strength when the lubricants were added to the drilling fluid. The values satisfy the requirement accepted by the industry. This study also showed that the applicants of EBL lubricant is better than EME salt in term of reducing the coefficient of friction in drilling fluid.

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Adebayo, B., and V. O. Akeju. "Evaluation of Tri-Cone Bit Performance on Limestone Formation." Advanced Materials Research 367 (October 2011): 555–60. http://dx.doi.org/10.4028/www.scientific.net/amr.367.555.

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This study examines the characteristics of limestone formation as well as the performance of different tri-cone bits in limestone in Ewekoro. Rock samples were collected from different layers of limestone encountered in the quarry during drilling operation. These samples were tested in the laboratory for uniaxial compressive strength and the tensile strength. Also, the chemical compositions of the samples were determined using the X-Ray Fluorescence (XRF) Spectrometer and the results were used in the determination of the Equivalent Quartz Content (EQC). The length of the insert buttons on the surface of the drill bits were measured using digital vernier calliper at regular intervals. In addition, the tooth and bearing wear rates as well as the penetration rate were determined on the field. The results of the uniaxial compressive strength varied from 86.5MPa (medium strength) to 112 MPa (high strength). The Equivalent Quartz Content (EQC) of the rock samples varied from 17.37% to 36.676% while the Rock Abrasivity Index (RAI) varied from 15.03 to 43.317. The results of the drilling variables showed that higher wear rate was experienced when milled tooth tri-cone bit was used for drilling than using insert tri-cone bit for drilling limestone formation, hence the tri-cone bits performed optimally well in all the formations except in glauconite (GLAB) where its performance was low. However, the economic analysis indicated that the insert tri-cone bit drilling cost per metre varied from N660/m to N673/m while the milled tooth tri-cone bit drilling cost per metre varied from N684/m to N710/m. This will act as a data base for selection of drill bits and drilling equipment in limestone quarries.

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Shaikh, Abdul Qadir, Abdul Haque Tunio, Shoaib Riaz, Waseem Arshad, and Habibullah Sargani. "Technical Performance Analysis of RSS and Mud Motors: A Case Study." International Journal of Current Engineering and Technology 10, no. 06 (December 14, 2022): 924–28. http://dx.doi.org/10.14741/ijcet/v.10.6.5.

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As global demand for oil and gas increases, drilling directional and horizontal wells safely, efficiently and economically requires the best in expertise and technology. The drilling strategy required to reach these targets utilizes one of the several available directional drilling techniques which includes the use of Whipstock, Bent Sub, conventional directional Bottom hole assemblies, Rotary steerable system and positive displacement mud motors. Poor well trajectories become the matter of serious worry in deep and deviated sections of the wells with higher dogleg severity, lower ROP, tolls stucking which causes huge economic loss to the operators. In worst case scenarios the in-adequately drilled directional wells are abandoned. The main objective of this research study will be the intermediate drilling section of the well where the steering of the trajectories like directional drilling trajectories i.e. Slant well, S shaped well and Horizontal wells that will be considered for analysis. This study will analyze the performance of RSS and conventional mud motors, on the basis of rate of Penetration (ROP), drilling depth, and borehole quality.

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Huang, Wan Long, Yi Shan Lou, Xiao Yong Ma, Hai Min Xu, and Qiang Wang. "Performance Evaluation and Application of the Non-Clay Weak Gel Drilling Fluid for Daniudi Gas Field." Advanced Materials Research 781-784 (September 2013): 2861–64. http://dx.doi.org/10.4028/www.scientific.net/amr.781-784.2861.

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Daniudi Gas Field reservoir has low degree of porosity and permeability, thus it is highly susceptible to the invasion of the solid phase of clay particles in the drilling fluid during the drilling process, in view of these problems, we introduce the non-clay weak gel drilling fluid system. Experiments of the drilling fluid system for rheological property, salt-resisting pollution, hot rolling rate of recovery, reservoir damage evaluation and drilling fluid treating chemical opimization have been taken. The experimental results show that the drilling fluid system has excellent temperature-resisting and salt-resisting character, good ability of suspending debris and strong inhibitory action, its rheological property can meet the needs of the long horizontal section of drilling engineering and the reservoir protection effect is excellent. In DP21 well horizontal section construction, each performance indicator of the drilling fluid can be controlled well and effectively solve the problems of cuttings carrying, borehole wall stability and reservoir protection, successfully completed the DP21 well drilling construction task.

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Journal articles on the topic 'Drilling performance'

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