Academic literature on the topic 'Drill spiral'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Drill spiral.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Journal articles on the topic "Drill spiral"
1
Li, Chao, Min Wang, and Dun Wen Zuo. "Research on Theory and Technique of Point Form Grinding for Quadratic Surface Flank of Twist Drill." Key Engineering Materials 315-316 (July 2006): 56–60. http://dx.doi.org/10.4028/www.scientific.net/kem.315-316.56.
Full textAbstract:
A new principle and technology of point form grinding for quadratic surface flank of twist drill was investigated. It broke through the traditional straight-line generator grinding method for the conical and the spiral drills. The principle of implementation mechanism was given in the paper. The trueness and feasibility of the method had been approved in the experiments, and the quadratic surface twist drill such as hyperboloid, ellipsoid and hyperboloid-ellipsoid compound flank had been grinded on the mechanism.
2
Li, Zhi Gang, Shi Tong Ge, and Zhi Chuan Guan. "Analysis of Acoustic Propagation Characteristic of Near-Bit Drill Tools." Advanced Materials Research 524-527 (May 2012): 1335–38. http://dx.doi.org/10.4028/www.scientific.net/amr.524-527.1335.
Full textAbstract:
In order to Make Use of Acoustic Wave to Transmit the Information from near- Bit End to a Remote Bit End, Using the Finite Element Method, Simulate and Analyze the Acoustic Wave Propagating Characters of Common near-bit Drill Tools: Ordinary Drill Collar, Spiral Drill Collar, Integral Straight Edge Stabilizer, Integral Spiral Stabilizer and Screw Drill. the Results Show that: because the Form and Size of Axial Cross Section Are in Basic Consistent, the Ordinary Drill Collar and Spiral Drill Collar Not only Have Better Characteristics in Time Domain, No Repeated Oscillation of Waveform Occurring, but Also Have Wider Bandwidth (up to 4KHz), and because of the Stabilizer Section, the Acoustic Impedance in the Axial Direction Discontinuities and the Time Domain Waveforms of other Three Kinds of Drilling Tools Appear that Not only Waveforms Have Shook Repeatedly, but Also the Width of the Pass Band Has Narrowed Significantly.
3
Zhang, Gao Wei, Guan Wei Zhang, and Qing Zhang. "Research on Spiral Drill Stabilizer Wear-Resisting Layer Repair Technology." Applied Mechanics and Materials 157-158 (February 2012): 373–76. http://dx.doi.org/10.4028/www.scientific.net/amm.157-158.373.
Full textAbstract:
This paper introduced the repair methods of wear-resistant layer of the drilling tool stabilizer, and proposed a simple fitting method for spiral drill stabilizer wear belt, fitting of spatial spiral surface is essence of the space spiral curve fitting, for a pitch fixed spiral can be expanded to two-dimensional line, and then using interpolation technique can control drill stabilizer and repair work head of joint motion, the synthesis of these two motions is the space spiral.
4
Xu, Lan Ying, Qiang Wu, Yu Zhong Li, and Pei Xin Qu. "Study on Chip Morphology of Electric Hot Minipore Drilling." Applied Mechanics and Materials 155-156 (February 2012): 596–600. http://dx.doi.org/10.4028/www.scientific.net/amm.155-156.596.
Full textAbstract:
Based on the electric hot drilling and ordinary drilling to drill small hole for hard-to-cut materials stainless steel, the chip morphology and microstructure were studied, the cutting deformation coefficient of the ordinary drilling is bigger, and the chip is not easy to discharge from spiral groove, while the cutting deformation coefficient of electric hot drilling is small, the chips are discharged smoothly along the spiral groove, experimental results show that the electric heating drilling improves capacity of chip breaking, and reduces drill fracture result from the chip obstruction, so it improves the service life of the drill bit.
5
Qi, Bo, Pinlu Cao, He Yang, Wenbo He, Mengke Wang, Baoyi Chen, Kun Bo, and Zhichuan Zheng. "Experimental and Numerical Study on Air Flow Behavior for a Novel Retractable Reverse Circulation Drill Bit of Casing-while-Drilling (CwD)." Geofluids 2021 (August 21, 2021): 1–12. http://dx.doi.org/10.1155/2021/3586572.
Full textAbstract:
A reverse circulation Down-The-Hole (DTH) hammer drill bit in Casing-while-Drilling (CwD) processes is designed and applied to drilling under complicated formation. The drill bit is a special retractable drill bit with an exclusive reverse circulation gas channel. Using numerical simulations and experiments, the influence of the gas channel structure parameters of the drill bit, including the inner jet nozzles, flushing nozzles, suction channel, and other parameters, on its reverse circulation performance is analyzed, and the optimal gas channel structure parameters of the drill bit are determined to improve the reverse circulation effect. The results show that the flushing nozzles and inner jet nozzles have an important influence on entrainment performance. The entrainment rate η decreases as the flushing nozzle diameter increases and decreases as the inner jet nozzle diameter increases. An increase in the suction channel diameter can improve the reverse circulation effect of the drill bit. The spiral slot drill bit is more conducive to air being sucked into the central channel in the form of spiral flow, so it can improve the entrainment performance. The entrainment rate η can reach 23.4% with the optimum structured drill bit.
6
Yang, Cheng, Jianliang Jiang, Bo Qi, Guoqing Cui, Liyong Zhang, Yunwang Chen, and Pinlu Cao. "Experimental and Numerical Analysis of Flow Behavior for Reverse Circulation Drill Bit with Inserted Swirl Vanes." Geofluids 2022 (January 10, 2022): 1–13. http://dx.doi.org/10.1155/2022/2472280.
Full textAbstract:
A swirling drill bit designed with an integrated vane swirler was developed to improve reverse circulation in down-the-hole hammer drilling. Its entrainment effect and influential factors were investigated by CFD simulation and experimental tests. The numerical results exhibit reasonable agreement with the experimental data, with a maximum error of 13.68%. In addition, the structural parameters of the swirler were shown to have an important effect on the reverse circulation performance of the drill bit, including the helical angle and number of spiral blades, swirler outlet area, and the flushing nozzles. The optimal parameters for the swirling drill bit without flushing nozzles include a helical angle of 60°, four spiral blades, and the area ratio of 2, while it is about 30°, 3, and 3 for the drill bit with flushing nozzles. Moreover, the entrainment ratio of the drill bit without flushing nozzles can be improved by nearly two times compared with one with flushing nozzles under the same conditions.
7
Xu, Jing, Yan Xu, and Jia Chun Li. "Fatigue Life Analysis of Auger Stem in Soft Coal Seam." Applied Mechanics and Materials 472 (January 2014): 111–14. http://dx.doi.org/10.4028/www.scientific.net/amm.472.111.
Full textAbstract:
The complex force of the auger stem in soft coal seam is taken as the research object. Then the three-dimensional model of spiral pipe is established in the SOLIDWORKS software, and introduced into the workbench simulation platform of ANSYS software to simulate the stress distribution of the screw drill pipe in actual working conditions. According to the results of the analysis, the conclusion is that the stress concentration is around the pin hole of the female joint and the fatigue life of spiral drill pipe is 280.72 x 10 3 cycles.
8
Shi, Run Ping, Cheng Yong Wang, and Xi Wang. "Preliminary Study on Carbon Fibre Composites Cutting Technology and Cutting Tools." Materials Science Forum 723 (June 2012): 25–29. http://dx.doi.org/10.4028/www.scientific.net/msf.723.25.
Full textAbstract:
Carbon fiber reinforced plastics (CFRP)/Ti super hybrid laminates are newly developed structural materials with excellent properties. But they are restricted in aircraft manufacturing because of their poor machining quality and short tool life. The machining quality and tool life are determined by machining ways, tool materials, drill point forms and drilling sequence. Spiral milling, drilling from Ti side, using the PCD tools and carbide drills with special point angle can improve the quality of hole and prolong tool life.
9
Petukhov, Y. E., and A. A. Vodovozov. "Analysis of the influence of speed of cutting land on stability of a spiral drill bit and ways of its increasing." Izvestiya MGTU MAMI 7, no. 1-2 (March 10, 2013): 31–35. http://dx.doi.org/10.17816/2074-0530-67985.
Full textAbstract:
This article presents the analysis of the influence of cutting speed and the thickness of a cut layer on stability of a cutting land. Based on the analysis there is considered the design of the cutting part of a spiral drill bit with more uniform distribution of stability of cutting points, compared to a usual drill bit. The authors established the equation describing the projection of a cutting land onto a plane perpendicular to the axis of the drill bit.
10
Pămîntaş, Eugen, Cristian Gheorghe Turc, and Felicia Veronica Banciu. "Three Edged Drill vs. Double - Edged Drill in Aluminium Parts Drilling." Advanced Materials Research 1036 (October 2014): 382–87. http://dx.doi.org/10.4028/www.scientific.net/amr.1036.382.
Full textAbstract:
This paper proposes an answer to a question like "it is better to use something new or use what we already know is a relatively recent technique novelty, which is found in tools manufacturer’s catalogues but still very rarely used, almost unknown in current industrial practice: spiral drill with three cutting edges. To give an endorsed answer, it starts machining a concrete case of a part of aluminium and research, based on a minimal experimental program, the processing with new drilling tool compared with the known helical drill. Answer the question initially is not simple, nor one given in few words and none with the high degree of generality, but one nuanced, depending on the performance indicators considered to be of interest and closeness of experimental working conditions than those found in current industrial environment. Helpful for the formulation and presenting the response is the processing of experimental data in the form of calculations, graphs and summary of the rejection’s causes. In this way, the concluding elements stand out more obvious and a number of partial answers can be formulated and justified recommendations can be done regarding: which of drills, where and in which conditions provides the best quality of machined hole, the best chip fragmentation and with the best ratio: price / quality / operation.
Dissertations / Theses on the topic "Drill spiral"
1
Чміль, Роман Євгенович. "Свердло з напайною твердосплавною пластиною." Master's thesis, Київ, 2018. https://ela.kpi.ua/handle/123456789/26719.
Full textAbstract:
Розглянуто форми різальних частин спіральних свердел, які використовуються в сучасному машинобудуванні.
Розраховані зміни передніх, задніх кутів та товщини зрізуваного шару, для свердел з радіусною формою різальної частини та свердел зі зворотнім кутом при вершині вздовж різальної кромки.
Встановлено, що свердло з радіусною формою різальної частини з радіусом при вершині 8 мм, має найсприятливіші геометричні параметри.
Розроблено технологію для виготовлення свердла, з оптимізацією його виробництва.
Розроблено стартап-проект ідеї даного свердла.The forms of the cutting parts of the spiral drills, which are used in modern mechanical engineering, are considered. The changes of the front, rear angles and the thickness of the cutting layer, for drills with a radius shape of the cutting part and the drill with an angle with the apex along the cutting edge. It is established that the drill with a radius shape of the cutting part with a radius at an apex of 8 mm has the most favorable geometric parameters. A technological tool for manufacturing a drill with optimization of its production has been developed. A startup project of the idea of this drill was developed
2
Плівак, О. А. "Стабілізація геометрії передньої поверхні спірального свердла за рахунок зміни форми його різальної частини." Thesis, Сумський державний університет, 2014. http://essuir.sumdu.edu.ua/handle/123456789/38135.
Full textAbstract:
Спіральне свердло є одним і широко поширеннях інструментів. Разом з тим серед металорізальних інструментів його конструкція є найбільш недосконалою. З часу винаходу спірального свердла всі дослідження і практика найбільш ефективного його використання спрямована на удосконалення конструкції його різальної частини і зокрема передньої поверхні цього інструменту.
З розвитком автоматизованого виробництва та широкого впровадження верстатів з ЧПК в металообробці посилення гостроти проблеми удосконалення передньої поверхні цього інструменту пов’язано зі зростанням вимог інтенсифікації процесів виробництва. Інтенсифікація процесу свердління перш за все визначається зростанням режимів різання та допустимою концентрацією операцій.
3
Лиштван, А. В. "Моделювання умов експлуатації спіральних свердел." Thesis, Сумський державний університет, 2017. http://essuir.sumdu.edu.ua/handle/123456789/61559.
Full textAbstract:
Програмний комплекс DEFORM має гнучку модульну структуру, що
дозволяє користувачеві вибрати і придбати оптимальний набір модулів під
номенклатуру вирішуваних завдань.
Додаткові модулі Machining 3D і Machining 2D використовуються для
моделювання процесів механообробки.
4
Криворучко, Дмитро Володимирович, Дмитрий Владимирович Криворучко, Dmytro Volodymyrovych Kryvoruchko, and А. Л. Ермоленко. "Критический анализ применения современных спиральных сверл." Thesis, Издательство СумГУ, 2008. http://essuir.sumdu.edu.ua/handle/123456789/5965.
Full text
5
Vopařil, Josef. "Moderní řezné nástroje ze slinutých karbidů." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2009. http://www.nusl.cz/ntk/nusl-228549.
Full textAbstract:
This thesis is focused on cutting tools made of cemented carbides. It contains analysis of cemented carbides for uncoated and coated cutting tools. It contains examples of modern tools for turning, milling and drilling. Practical part of this thesis evaluates and compares cutting properties of two types of spiral drills.
Books on the topic "Drill spiral"
1
Curtis, Cathy. A Generous Vision. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190498474.001.0001.
Full textAbstract:
Elaine de Kooning (1918–1989) was a noted art critic and artist, and a prime mover in the New York art world. She was a vivacious social catalyst. Her sparkling wit enlivened meetings of the Club, nights at the Cedar Tavern, and chance conversations on the street. Her droll sense of humor, generosity of spirit, and freewheeling spending were as legendary as her ever-present cigarette. An incisive writer, she pinpointed the essence of artists as diverse as Franz Kline and August Renoir, and deftly refuted pompous critical rhetoric. As a painter, she melded Abstract Expressionism with her lifelong interest in bodily movement to capture the characteristic postures of portrait sitters ranging from artist and writer friends to President John F. Kennedy. Driven to focus on a single theme for years at a stretch, she produced multiple paintings reflecting her fascination with people and animals in motion; her subjects include bullfighting, basketball, Paleolithic cave paintings, and a multi-figure sculpture in the Jardin du Luxembourg in Paris. Married to Willem de Kooning from 1943 until her death, she credited him as her greatest influence. Although the couple separated in 1957, after episodes of unfaithfulness on both sides, nearly two decades later she bought a house near his to rescue him from severe alcoholism. Rather than being overshadowed by his fame, she said, she worked “in his light.”
Book chapters on the topic "Drill spiral"
1
"spiral drill collar." In Dictionary Geotechnical Engineering/Wörterbuch GeoTechnik, 1285. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-41714-6_196131.
Full text
2
Eames, Steven C. "Battle Drill and Fighting Spirit." In Rustic Warriors, 172–97. NYU Press, 2011. http://dx.doi.org/10.18574/nyu/9780814722701.003.0009.
Full text
3
Pichichero, Christy. "The French Military Enlightenment." In The Military Enlightenment. Cornell University Press, 2017. http://dx.doi.org/10.7591/cornell/9781501709296.003.0002.
Full textAbstract:
This chapter examines the personalities, spaces, and means of the French Military Enlightenment. Kings, royal mistresses, and war ministers explored pathways to improving martial efficacy, efficiency, and education, establishing new policies and institutions. Military officers took on the role of the militaire philosophe, or military philosopher, applying a critical esprit philosophique (philosophical spirit) to a myriad of questions, from drill to moral reinvigoration in the officer corps. They proposed policy changes, enforced those mandated by Versailles, or rebelled against them. They shared their experiences and opinions with others through conversations, letters, manuscript memoirs, and published works. Non-military thinkers, physicians, literati, artists, and members of the reading public were also highly informed and engaged in military matters. They, too, developed and spread military knowledge. These agents of the French Military Enlightenment transformed war and military topics into one of the great debates of the public sphere and nexuses of change of the eighteenth century.
4
White, Robert. "Keats as a Reader of Robert Burton’s The Anatomy of Melancholy." In Keats's Anatomy of Melancholy, 93–138. Edinburgh University Press, 2020. http://dx.doi.org/10.3366/edinburgh/9781474480451.003.0005.
Full textAbstract:
Despite being full of weighty analysis of serious medical, emotional and psychological concerns, and wearying in its copious classical quotations and references, yet Burton’s The Anatomy of Melancholy is also by turns light-hearted, enlightened, and witty. And despite its claim to be based on a methodical analytical system indicated in the taxonomically arranged table of contents, it is nothing if not digressive, anecdotal, opinionated and far from systematic, proceeding instead in a subjectively driven stream of consciousness. Burton’s style reflects the Anatomy of Melancholy’s multi-faceted and eccentric aspects which appealed to Keats. His own unique and irrepressible sense of humour, often reframing grim situations with word-play, puns and droll mockery, finds a ‘greeting of the Spirit’ in Burton, and by following his markings on his copy of The Anatomy we can see what he appreciated in a writer who in some ways was a kindred spirit. Findings from this chapter inform the next, covering style and substance which influenced Keats’s poetry.
Conference papers on the topic "Drill spiral"
1
Zhang, Yiyang, Yujun Guan, Zhuang Ma, and Pingxun Liu. "A simulation study on synchronous performance of automatic sending drill of spiral drilling machine." In 2010 2nd International Conference on Information Science and Engineering (ICISE). IEEE, 2010. http://dx.doi.org/10.1109/icise.2010.5690672.
Full text
2
Ji, Guodong, Haige Wang, Hongchun Huang, Meng Cui, Feixue Yulong, Ying Ma, and Xiaofeng Sun. "Achieving Improved Drilling Performance with Hole Cleaning Technology in Horizontal Shale Gas Wells in Sichuan Basin of China." In International Petroleum Technology Conference. IPTC, 2021. http://dx.doi.org/10.2523/iptc-21214-ms.
Full textAbstract:
Abstract The horizontal section length of shale gas horizontal wells in Sichuan Basin in the south-west of China generally exceeds 2000m. Cuttings are apt to accumulate and form cuttings beds along such long and curve horizontal sections due to low cuttings carrying capacity, which often results in excessive torque and drag or even stuck pipes during drilling process. According to the statistics dada inthe period of Jan. - Oct. 2019, more than 25 stuck pipe incidents and 15 rotary steering tools loss in borehole were reported due to inefficient cuttings transportation in the long horizontal wells in Sichuan Basin. This paper studies the cuttings transportation and cuttings bed formation in horizontal wells. A prediction model for the distribution of cuttings bed was established. A monitoring and analysis software for the cuttings bed and cuttings cleaner with V-shaped spiral blades that is used to agitate the cuttings bed wasdeveloped. The software calculates the distribution and thickness of the cuttings bed according to the well trajectory, wellbore structure, drilling fluid characteristics, etc., and provides the optimal operating parameters for the removal of the cuttings bed by the rotating and reciprocating drill string. Then, the drill cuttings remover in the drill string moves to the predicted position of the drill cuttings, scrapes the drill cuttings and creates a swirling flow during the pipe rotation. The combined application of software and makeup remover can effectively solve the issue of borehole cleaning in long horizontal wells. One of the field applications was carried out in the well Ning 209H12, a shale gas horizontal well in Sichuan Basin. The well experienced excessive torque and drag issue during the tripping of drill string of long horizontal section. Thesoftware ran based on oil well data, and it determines the placement and thickness of cuttings beds in the well and calculates the optimal operating parameters for a flow rate of about 32L/s and a speed of 100rpm to remove them. By rotatingand reciprocating the drill string with recommended operating parameters along the cuttings bed interval, the removers helped cleaning the cuttings bed efficiently and significant amount of cuttings was observed at vibration screen. After cleaning the cuttings bed interval, the trip smoothly ran to the bottom without any excessive torque and drag, and then continues to drill in cooperation with the removers to the total depth. During the well completion, there was no problem with the operation of electrical logging and production casing. This cuttings removal technology has been used in other shale gas formations and tight gas formations where horizontal wells are widely used.
3
Balbaa, Ola Mohamed, Hesham Mohamed, Sherif Mohamed Elkholy, Mohamed ElRashidy, Robert Munger, and Mohamed Najwani. "New Approaches for Drilling Highly Depleted Reservoir in Deep Water Wells." In Abu Dhabi International Petroleum Exhibition & Conference. SPE, 2021. http://dx.doi.org/10.2118/207779-ms.
Full textAbstract:
Abstract While drilling highly depleted gas reservoirs with a very narrow drilling window, Common drilling methods like utilizing loss of circulation pills, wellbore strengthening materials and managed pressure drilling (MPD) are being used in several reservoirs, yet it cannot be successful or cost effective if applied in a traditional manner. Innovative approaches to enable drilling wells in highly depleted reservoir in the Mediterranean deep water were adopted. The approaches incorporated design changes to the well and Bottom hole assembly (BHA), optimized drilling practices, and unconventional use of MPD while drilling and cementing production liner. Well design change in comparison to offset wells to allow drilling the reservoir in one hole section. Several design changes were considered in the BHA and drilling fluids to prevent as well as mitigate losses and differential sticking risks. From the BHA viewpoint, one of the key successful prevention measures was maximizing the standoff to reduce the contact area with the formation, this was achieved through utilizing spiral heavy wall drill pipe (HWDP) instead of drill collars in addition to a modeled placement of stabilizers and roller reamers. While on the drilling fluid side, Calcium carbonate material was added to strengthen wellbore, prevent losses and avoid formation damage. Particle size up to 1000 micron and concentration up to 40ppb was used to strengthen the depleted sands dynamically while drilling. Furthermore, as mitigation to stuck pipe, Jar and accelerator placement was simulated to achieve optimum impulse and impact force while maintaining the Jar above potential sticking zone. Whereas to address the consequence of a stuck pipe event, disconnect subs were placed in BHA to allow for recovering the drill string efficiently. MPD was first introduced in the Mediterranean in 2007 and continued to develop this well-known technique to mitigate various drilling challenges. For this well, MPD was one of the key enabling factors to safely drill, run and cement the production liner. Surface back pressure MPD allowed using the lowest possible mud weight in the hole and maintaining downhole pressure constant in order to manage the narrow drilling window between the formation pressure and fracture pressure (less than 0.4 ppg). MPD was also applied for the first time for running and cementing the production liner to prevent losses and achieve good cement quality which is a key to successful well production.
4
Sehsah, Ossama, Oscar Bautista Sayago, Tom Newman, and Fadi Mounzer. "Challenging the Status Quo Leads to Enhanced Drilling Performance." In SPE Middle East Oil & Gas Show and Conference. SPE, 2021. http://dx.doi.org/10.2118/204876-ms.
Full textAbstract:
Abstract The technology described in this paper has been developed to challenge the shortcomings of the 40+ year old conventional blade stabilizer. The focus of this paper is to compare drilling performance on two lateral well sections against conventional spiral blade stabilizers. The comparison will highlight the noticeable improvement in drilling performance through analysis of relevant drilling parameters. The new design stabilizer, referred to in this paper as Innovative Drillstring Stabilizer (IDS), can be positioned in the drill string as you would typically do with a conventional spiral blade stabilizer or roller reamer. The design, however, is considerably different. The opened profile, placement and contour of the blades are designed to enhance energy transfer and flow along the tool, improving the transportation of cuttings around the tool while minimizing the occurrences of balling up. The orientation and dome shape of the blades is designed to reduce friction and torque, reduce vibration, improve weight transfer and when slide drilling minimizing the occurrence of hanging up and motor stalls. The engineered drillstring stabilizer was deployed in two wells for trial and technology acceptance purpose. An 8" OD innovative drillstring stabilizer was used as part of a steerable motor bottom hole assembly (BHA) in an integrated operations project. An in-depth performance comparison study was conducted by a specialized and independent third party between two identical BHAs. One (BHA-1), however, included conventional spiral blade stabilizers while the other (BHA-2) adopted the innovative drillstring stabilizers. The pioneering design of the IDS in BHA-2 contributed to reducing the overall torque and aiding in better weight transfer and drilling efficiency. It was possible to apply more weight and the energy transfer to the bit, based on mechanical specific energy (MSE) calculations, showed more efficient drilling conditions. As a result, the ROP, both rotating and sliding showed significant improvement with an overall increase of more than 30%. Better stabilization with BHA-2 aided in less vibration and no motor stalls. In addition, while pulling out of hole, lower hook loads were observed due to the enhanced hole cleaning features, improved hole condition and less friction along the string components. When back on surface no indications of balling-up were observed either. Today, drilling related inefficiencies, in the form of low ROP, non-productive time, damages beyond repair or stuck pipe and lost in hole incidents costs the oil and gas industry millions of dollars on an annual basis. The IDS is designed and proved to address such dysfunctions and improve drilling performance and efficiency while simultaneously stimulates a lower MSE drilling environment.
5
Hou, Huihui, Zhong Liu, Hongwu Zhu, Boyu Zhang, and Tingting Wu. "Optimization Design of PDC Bit Gauge Using CFD-DPM and Central Composite Design." In ASME 2018 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/pvp2018-84360.
Full textAbstract:
Polycrystalline Diamond Compact (PDC) bit has been widely used in natural gas/oil drilling industry for its advantages such as no rotating parts, highly rate of penetration (ROP) and durability. In recent decades, the comprehensive property of PDC bit has been improved rapidly due to the scientists’ efforts. Hydraulic design of PDC bit is very important because the retention of the cuttings may dramatically decrease ROP. Most current researches focus on how blade profile and nozzle parameters affect hydraulic performance of PDC bit, but, the understanding of gauge geometrical parameters (mainly refer to gauge width, gauge length and gauge spiral angle) effects on hydraulic performance of PDC bit is still incomplete. In this paper, a simulation method and an optimization method were applied to find the best gauge parameter for 8.5 inch PDC bit. In the proposed approach, the approximate range of above three parameters were confirmed first based on previous studies. Then, the central composite design (CCD) was used to design numerical simulation scheme and the discrete particle modeling (DPM) was used to track the cuttings and the velocity of particles and fluid were evaluated to study the hydraulic performance of drill bit under different gauge geometrical parameters. Finally, the optimal geometrical parameter of gauge could be obtained according to the simulation results. Overall, the proposed approach can be used to design PDC bit gauge structure to improve the cuttings’ velocity away from bottomhole, which will result in huge improvement of ROP.
6
Selden, Rush, and Mark Sim. "New Frontienrs in Pipeline Pressure Isolation: Non-Invasive, Without De-Pressurizing, Production Loss or Flow Interruption." In 2008 7th International Pipeline Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/ipc2008-64104.
Full textAbstract:
There are several methods for pressure isolating pipelines. Along with hot tapping and stopple and freeze plugging, there is another common method known as remote controlled (tether-less) pipeline plugging, whose use is increasing — both offshore and onshore. This paper will review piggable tether-less plugging technology, provided by TDW Offshore Services using the SmartPlug™, and case histories whereby a bi-directionally piggable, remotely actuated (tether-less) plug is deployed to allow pipeline operators to perform repair work, modifications, or tie-ins on pipeline systems without interrupting production in the remaining part of the pipeline system, i.e., while operating live and at production pressure. Specifically this paper will address two new technologies: First, allowing high pressure isolation of thin wall pipe, and second, of spiral wound pipe, both without welding, tapping or leaving any trace of the fact that an isolation occurred. Some advantages of tether-less plugging technology are: • Plugging tools have higher pressure containment capacity than other plugging methods, typically up to 3,000 psi. • Bi-directionally piggable, able to negotiate as small as 1.5D bends, operated and monitored entirely via remote control (tether-less through-wall control and communication system). • Compared to hot tapping, welding a fitting on the pipeline is not required, and no need to hot tap (drill) into the pipeline, no future leak path and no issues regarding cuttings or coupon. This latest frontier of pressure isolation allows for plugging tools that are fail-safe (the higher the differential pressure the harder they set) with zero leakage tolerance. They can be configured for job specific requirements such as double or single block, and can allow for hydrotesting the completed work. The most important advantage is that they eliminate the time needed and lost production cost of displacing pipeline product, flaring, depressurizing, emptying the line, and re-commissioning the line. In addition, specifically this paper will address the latest technology advances allowing high pressure isolation of thin wall (8mm/0.32 inch) spiral wound pipe using external pressure reinforcement clamps over the pressure isolation tool during an onshore project on a 24″ methane gas pipeline. During the isolation, a portion of the upstream pipeline was removed and replaced while the entire pipeline downstream of the pressure isolation remained under full operating pressure, thus requiring no loss of production from downstream assets during the repair. Once complete the tools were released and pigged from the line, leaving no holes, no welds, no future leak path and no trace that any event occurred on the pipeline in that location.
7
Lortz, Wolfgang, and Radu Pavel. "Advanced Modeling of Drilling – Realistic Process Mechanics Leading to Helical Chip Formation." In ASME 2021 16th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/msec2021-63790.
Full textAbstract:
Abstract There is considerable interest in the “Industry 4.0 project”. Industry hopes that a general solution of the metal removal problem will be found through the use of highly automated manufacturing data. Scientists hope that the computer will provide better models based on artificial intelligence and machine learning. Initial attempts leveraging existing models did not result in satisfactory results yet — largely because of mathematical, physical and metallurgical reasons. This paper presents a new mathematical-physical model to describe the total process mechanics from volume conservation, to friction, to metal plasticity with self-hardening or softening effects and dynamic phenomena during metal plastic flow. The softening effects are created by high energy corresponding to high strain-rate resulting in high temperatures. Furthermore, the developed equations for strain-rate discontinuities as well as yield shear stress with body forces have an interdependent relationship and lead to plastic deformation with dynamic behavior in the total chip formation zone. This plastic deformation is the only parameter that will not disappear after completing the process. This leads to the opportunity to check the theoretically developed grid deformation and compare it with practical results of the same area. In this publication this new theory will be used to analyze the complex contact and friction conditions between the chip and tool edge of a twist drill during operation. It will be shown that the existing conditions are leading to high wear at the corner edge and flank wear at the tool cutting edge. In addition, the existing temperatures can be estimated and compared with practical measurements, and all these complex and difficult conditions create a helical spiral chip, which could be developed as it will be presented in this paper.
8
Gonzalez, Eduardo, Alycen Wiacek, and Muyinatu A. Lediju Bell. "Visualization of custom drill bit tips in a human vertebra for photoacoustic-guided spinal fusion surgeries." In Photons Plus Ultrasound: Imaging and Sensing 2019, edited by Alexander A. Oraevsky and Lihong V. Wang. SPIE, 2019. http://dx.doi.org/10.1117/12.2510688.
Full text
9
Zulqarnain, Muhammad, and Mayank Tyagi. "Quantitative Risk Assessment (QRA) of an Exploratory Drilling Oil Spill in Deepwater Gulf of Mexico." In ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/omae2014-24685.
Full textAbstract:
Major offshore accidents such as Macondo well incident highlight one of the possible failure modes and subsequent disasters when an offshore engineering project could go wrong. Such events can potentially happen during any phase of an offshore well’s life — starting from the exploratory drilling phase to the final phase of plug and abandonment. Major factors that significantly contribute in defining such accident scenarios are the geological and operational complexities, equipment reliability, human factors, geographical/economy location, and environmental conditions. The path taken by the reservoir fluids to reach the sea floor is also an important factor in determining the worst case discharge rates. It is expected that the environmental risks from an oil/gas spill would also be function of the type of hydrocarbons released and duration of the spill. A representative Neogene well is studied for quantitative risk assessment (QRA) for spill in exploratory phase from the Mississippi Canyon in the Gulf of Mexico with a water depth of 3,000ft and total vertical depth of 16,726 ft and the representative reservoir properties for this area are selected from the literature. Due to the large variation of reservoir properties, lognormal distributions have been assumed for some of the reservoir properties and from the Monte Carlo simulations P10, P50 and P90 values are estimated. Based on P50 and P90 values, the worst case discharge rates are calculated using a commercially available multiphase flow simulator with black oil model. Based on historical trends, release of hydrocarbons during blowouts are simulated for the following circumstances: seabed and topside releases, restricted and unrestricted flow through BOP, flow with drill pipe inside the wellbore and open hole flow without drill pipe and flow from the reservoir when it is either fully or partially penetrated. To incorporate the technological improvements and study their effects on the reduction of the overall risk associated with deepwater drilling activity, two cases are considered and compared to each other. First case is based on the historical data and the second case is a modified version of the first case by incorporating some of the recent technological improvements and newly built oil spill response systems e.g. capping stacks. The historical kick statistics and the equipment reliability data available in the literature is used to analyze various scenarios and corresponding flow rates. Risk is analyzed using the failure probability and consequence analysis and is presented in the form of a risk matrix for the different case studied and for the overall drilling activity as well.
10
Paolozzi, Antonio, Ferdinando Felli, Cristian Vendittozzi, Claudio Paris, and Hiroshi Asanuma. "Analysis of FBG Sensors Data for Pipeline Monitoring." In ASME 2016 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/smasis2016-9260.
Full textAbstract:
Pipelines for oil distribution may affect the environment when natural disasters such as landslides and earthquakes damage the infrastructures. Besides natural causes, illegal extraction of oil from the pipelines can produce significant environmental damage and sometimes loss of lives from explosions. During the spill, the fuel flow of the main stream theoretically reduces, but this variation is within the normal flow fluctuation and so it is not possible to detect this illegal activity using fuel flow measurements. Transducers based on Fiber Bragg Grating (FBG) sensors are very attractive for pipeline monitoring. In two previous works we proposed a new transducer for increasing the sensitivity of FBG sensors to detect illegal activities on the pipelines (drilling). In fact FBG sensors attached directly on the surface of the pipe are not capable to detect strain variations induced by a drill. This paper reports an update on the experimental results obtained on a real size pipeline and a theoretical study aimed to explain why a surface attached sensor does not work.