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Artykuły w czasopismach na temat „Rotary percussion drilling”

Autor: Grafiati

Data publikacji: 6 września 2023

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1

Li, Peng, Hui Zhang, Shengyuan Jiang i Weiwei Zhang. "Analysis and Testing of Load Characteristics for Rotary-Percussive Drilling of Lunar Rock Simulant with a Lunar Regolith Coring Bit". Shock and Vibration 2017 (2017): 1–15. http://dx.doi.org/10.1155/2017/3012749.

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Based on an optimized lunar regolith coring bit (LRCB) configuration, the load characteristics of rotary-percussive drilling of lunar rock simulant in a laboratory environment are analyzed to determine the effects of the drilling parameters (the rotational velocity, the penetration rate, and the percussion frequency) on the drilling load. The process of rotary drilling into lunar rock using an LRCB is modeled as an interaction between an elemental blade and the rock. The rock’s fracture mechanism during different stages of the percussive mechanism is analyzed to create a load forecasting model for the cutting and percussive fracturing of rock using an elemental blade. Finally, a model of the load on the LRCB is obtained from the analytic equation for the bit’s cutting blade distribution; experimental verification of the rotary-impact load characteristics for lunar rock simulant with different parameters is performed. The results show that the penetrations per revolution (PPR) are the primary parameter influencing the drilling load. When the PPR are fixed, increasing the percussion frequency reduces the drilling load on the rock. Additionally, the variation pattern of the drilling load of the bit is in agreement with that predicted by the theoretical model. This provides a research basis for subsequent optimization of the drilling procedure and online recognition of the drilling process.

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2

Sliwa, Tomasz, Aneta Sapińska-Śliwa, Michał Korzec, Andrzej Gonet, Marek Jaszczur, Martyna Ciepielowska i Artur Gajdosz. "Investigation of Old Exploration Boreholes in the Lublin Basin with Regard to Potential Rotary-Percussion Drilling of Shale Gas Wells". Energies 14, nr 10 (11.05.2021): 2734. http://dx.doi.org/10.3390/en14102734.

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The rotary-percussion drilling method is a prospective way to decrease drilling costs. It is obvious, based on literature analyses and finished geothermal drilling, that the Lublin Basin can be perceived as the one where rotary-percussion drilling can be used to drill an overburden of shale rocks. The paper explained the geology of the Lublin Basin, its’ geological structures, and the possibility of the use of drilling with a down-the-hole hammer, which could significantly decrease the cost of the whole shale gas drilling investment. Data collected from the wells drilled in the Lublin Basin were compared and analyzed to determine the viability of rotary-percussion drilling. Provided analyses showed that using the rotary-percussion drilling method in the Lublin Basin had a greater possibility of application than in other Polish shale basins (Baltic and Podlasie).

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3

KARASAWA, Hirokazu, Koji SUZUKI i Koji TAKAHASHI. "Rock Drillability in Rotary-Percussion Drilling". Journal of MMIJ 125, nr 1 (2008): 13–20. http://dx.doi.org/10.2473/journalofmmij.125.13.

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4

Neskoromnykh, V. V., A. E. Golovchenko i M. S. Popova. "Modernization of rock-cutting tool for rotary-percussion drilling that implements eccentric application of impact pulses". Proceedings of higher educational establishments. Geology and Exploration, nr 5 (28.11.2019): 64–69. http://dx.doi.org/10.32454/0016-7762-2019-5-64-69.

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Rotary percussion drilling with pneumatic hammers is a promising, high-performance method widely used in the practice of geological exploration, the performance of which is determined mainly by pressure and the amount of cleaning agent supplied by the compressor. The parameters of commercially available high-pressure compressors do not allow drilling at a depth of more than 300 meters, which is one of the main limiting factors of its practical application in production conditions. One of the ways to improve the performance of the rotary-percussion drilling of wells, and at the same time the maximum depth of drilled wells is to improve the mechanism of rock destruction by applying eccentric impact pulses to the drilling tool, which will make it possible to implement more actively the tangential component of the impact pulse that affects the shape and the volumes of the fracture holes being formed, providing additional splitting of the rock in the direction of the rock face. The paper discusses the ways to perfect the known designs of bits for rotary-percussion drilling of wells implementing eccentric application of impact impulses, issues of geometric substantiation of the shape of an eccentric protrusion on a drill bit torus shim for rotary-percussion drilling and oscillations of torus shim when transmitting eccentric impact pulses from the point of view of enhancement durability of a construction and accuracy of transfer of eccentric impact pulses.

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5

Xiao, Yingjian, Charles Hurich i Stephen D. Butt. "Characterization of rotary-percussion drilling as a seismic-while-drilling source". Journal of Applied Geophysics 151 (kwiecień 2018): 142–56. http://dx.doi.org/10.1016/j.jappgeo.2018.02.021.

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6

Huang, Zhi Qiang, Qin Li, Yong Tao Fan, Zhen Qiang Wei i Hai Yan Zhu. "Study on Mechanism of Hammer Bit and Rock Interaction in Geophysical Prospecting Percussion Drilling". Advanced Materials Research 291-294 (lipiec 2011): 2266–71. http://dx.doi.org/10.4028/www.scientific.net/amr.291-294.2266.

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Percussion drilling has been widely used in oil and gas industry, yet it still has some shortcomings, such as severe damages to drilling tools, low energy transferring efficiency and low rock-fragmenting efficiency. Thus it is necessary to reveal the mechanism of interactions between the hammer bit and rock in geophysical prospecting percussion drilling. Taking account of the coupling effect of the Weight on Bit (WOB), impact force and rotary torque, this paper constructed a Finite Element Method (FEM) model using the finite element analysis software (ANSYS/LS-DYNA) and conducted a computer simulation of bit-rock interaction under rotating and simple impact effect, which showed the rock-fragmenting process of hammer bit and the curves of volume-time and depth-time of craters as well as the effective stress-time curves of the centre tooth, second-row tooth and peripheral tooth. The results showed that: the percussion drilling process under rotating impact effect is characterized as four fundamental processes; the crater depth mainly depends on impact force rather than rotary torque; the crater created under rotating impact effect is twice the volume of that under impact effect; the effective stress of each tooth changes severely: the stress of second-row tooth is the largest, centre tooth the second, and peripheral tooth the smallest. This study provided a guide for the structural optimization of hammer bit and general applications of percussion drilling.

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7

Oparin, V. N., V. V. Timonin i V. N. Karpov. "Quantitative estimate of rotary–percussion drilling efficiency in rocks". Journal of Mining Science 52, nr 6 (listopad 2016): 1100–1111. http://dx.doi.org/10.1134/s1062739116061637.

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8

Muro, Tatsuro. "Drilling rate of rotary percussion drill bits and rock characteristics". Journal of Terramechanics 25, nr 3 (styczeń 1988): 191–99. http://dx.doi.org/10.1016/0022-4898(88)90002-x.

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9

Sapińska-Śliwa, Aneta, Rafał Wiśniowski, Michał Korzec, Artur Gajdosz i Tomasz Śliwa. "Rotary - percussion drilling method - historical review and current possibilities of application". AGH Drilling, Oil, Gas 32, nr 2 (2015): 313. http://dx.doi.org/10.7494/drill.2015.32.2.313.

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10

MURO, Tatsuro, Ryoichi FUKAGAWA i Masahiro WATANABE. "Rotary percussion forces affecting a drilling rate of bit for rock mass." Doboku Gakkai Ronbunshu, nr 391 (1988): 206–13. http://dx.doi.org/10.2208/jscej.1988.391_206.

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11

Akhymbayeva, Bibinur S., Daniyar G. Akhymbayev, Dilda K. Nauryzbayeva i Bulbul K. Mauletbekova. "The process of crack propagation during rotary percussion drilling of hard rocks". Periodicals of Engineering and Natural Sciences (PEN) 9, nr 4 (16.09.2021): 392. http://dx.doi.org/10.21533/pen.v9i4.2295.

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12

Yang, Yandong, Hualin Liao, Yue Xu, Shuai Yang i Jilei Niu. "Coupled fluid-structure simulation of a vibration-assisted rotary percussion drilling tool". Energy Sources, Part A: Recovery, Utilization, and Environmental Effects 41, nr 14 (22.11.2018): 1725–38. http://dx.doi.org/10.1080/15567036.2018.1549147.

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13

Senjoba, Lesego, Jo Sasaki, Yoshino Kosugi, Hisatoshi Toriya, Masaya Hisada i Youhei Kawamura. "One-Dimensional Convolutional Neural Network for Drill Bit Failure Detection in Rotary Percussion Drilling". Mining 1, nr 3 (12.11.2021): 297–314. http://dx.doi.org/10.3390/mining1030019.

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Drill bit failure is a prominent concern in the drilling process of any mine, as it can lead to increased mining costs. Over the years, the detection of drill bit failure has been based on the operator’s skills and experience, which are subjective and susceptible to errors. To enhance the efficiency of mining operations, it is necessary to implement applications of artificial intelligence to produce a superior method for drill bit monitoring. This research proposes a new and reliable method to detect drill bit failure in rotary percussion drills using deep learning: a one-dimensional convolutional neural network (1D CNN) with time-acceleration as input data. 18 m3 of granite rock were drilled horizontally using a rock drill and intact tungsten carbide drill bits. The time acceleration of drill vibrations was measured using acceleration sensors mounted on the guide cell of the rock drill. The drill bit failure detection model was evaluated on five drilling conditions: normal, defective, abrasion, high pressure, and misdirection. The model achieved a classification accuracy of 88.7%. The proposed model was compared to three state-of-the-art (SOTA) deep learning neural networks. The model outperformed SOTA methods in terms of classification accuracy. Our method provides an automatic and reliable way to detect drill bit failure in rotary percussion drills.

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14

Toconas, F., L. Jordan i S. Kedda. "A comparison between conventional blast hole sampling and diamond core drilling for copper grade at the Antapaccay mine". TOS Forum 2022, nr 11 (27.05.2022): 325. http://dx.doi.org/10.1255/tosf.161.

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Even though the sampling technique result in potentially biased samples with poor precision of the metal grade and are classified as specimens and not samples, the manual sampling of rotary percussion blast hole chips is still widely performed in the industry for operational grade control purposes. The objectives of this investigation are to estimate the precision and“bias” of manual sampling by comparing the copper grade results of fifteen (15) diamond drill core samples versus fifteen (15) rotary percussion blast hole drilling chip samples. This also includes the determination of a practical manual sampling template with the highest precision to providean understanding of the distribution of the copper content within the cone of blast hole chips. The contouring plots of thecopper grades provides the selection of the best fit-for-purpose template with regards precision and operational resourcing requirements. The diamond drill core samples take into account the Increment Delimitation Error (IDE) andIncrement Extraction Error (IEE) and therefore can be considered as reference samples for the purpose of this review.

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15

Karpov, VN, i VV Timonin. "Importance of early adjustment of rotary-percussion drilling tool to mineral mining conditions". IOP Conference Series: Earth and Environmental Science 134 (marzec 2018): 012024. http://dx.doi.org/10.1088/1755-1315/134/1/012024.

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16

Oparin, V. N., V. V. Timonin, V. N. Karpov i B. N. Smolyanitsky. "Energy-Based Volumetric Rock Destruction Criterion in the Rotary–Percussion Drilling Technology Improvement". Journal of Mining Science 53, nr 6 (listopad 2017): 1043–64. http://dx.doi.org/10.1134/s1062739117063114.

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17

Gasiński, Jerzy, Ja Macuda i Tomas Kaczmarek. "Percussion-rotary method of drilling large-diameter dewatering wells in "Bełchatów" liginte mine". AGH Drilling, Oil, Gas 33, nr 3 (2016): 571. http://dx.doi.org/10.7494/drill.2016.33.3.571.

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18

Sukach, Mykhailo. "Deepwater Well Survey Equipment". Gіrnichі, budіvelnі, dorozhnі ta melіorativnі mashini, nr 98 (30.12.2021): 21–29. http://dx.doi.org/10.32347/gbdmm.2021.98.0301.

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With the growth in underwater construction activities, there is an increasing need for accurate seabed engineering data. Modern technology makes it possible to take samples of bottom soils with a partially disturbed structure, especially for weak silty soils and silts. Testing such samples in laboratory conditions leads to inevitable errors. Despite the constant improvement of technical means of sampling, they cannot fully replace studies of the properties of bottom soils in natural occurrence. Therefore, it became necessary to create devices for the natural study of underwater soils. The following soil investigation methods are used in deep-sea wells: stamp tests, rotational shear, penetration logging, soil cutting, pressuremetry. Drilling of underwater wells at the bottom is carried out from floating drilling rigs, consisting of a floating base and a drilling rig. Pontoons (catamarans, trimarans) and drilling ships (self-propelled and non-self-propelled) are used as a base. On the shelf, pontoons with retractable supports or a flooded base are more often used. The drilling rig with working equipment is usually placed in the center of the pontoon. The choice of drilling equipment is determined by the purpose of the work, the depth and diameter of underwater wells, the depth of the sea, the displacement of the drilling rig, the physical and mechanical properties of bottom, soil, etc. Deep-sea drilling is carried out from special vessels on which the drilling unit is mounted. Vessels with an opening bottom or a special shaft for the passage of casing and drill pipes, as well as those with retractable cantilever platforms, are used. Drilling ships and pontoons are kept in a fixed position with the help of four or six anchors attached to the bow and stern of the craft. Drilling rigs provide rotary, percussion-rotary, shock-rope, vibration, rotary suction and airlift drilling. Drilling at maximum depths in the ocean is carried out using deep-sea bottom platforms and autonomous controlled vehicles.

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19

Aalizad, Seyed Ali, i Farshad Rashidinejad. "Prediction of penetration rate of rotary-percussive drilling using artificial neural networks – a case study / Prognozowanie postępu wiercenia przy użyciu wiertła udarowo-obrotowego przy wykorzystaniu sztucznych sieci neuronowych – studium przypadku". Archives of Mining Sciences 57, nr 3 (1.12.2012): 715–28. http://dx.doi.org/10.2478/v10267-012-0046-x.

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Abstract Penetration rate in rocks is one of the most important parameters of determination of drilling economics. Total drilling costs can be determined by predicting the penetration rate and utilized for mine planning. The factors which affect penetration rate are exceedingly numerous and certainly are not completely understood. For the prediction of penetration rate in rotary-percussive drilling, four types of rocks in Sangan mine have been chosen. Sangan is situated in Khorasan-Razavi province in Northeastern Iran. The selected parameters affect penetration rate is divided in three categories: rock properties, drilling condition and drilling pattern. The rock properties are: density, rock quality designation (RQD), uni-axial compressive strength, Brazilian tensile strength, porosity, Mohs hardness, Young modulus, P-wave velocity. Drilling condition parameters are: percussion, rotation, feed (thrust load) and flushing pressure; and parameters for drilling pattern are: blasthole diameter and length. Rock properties were determined in the laboratory, and drilling condition and drilling pattern were determined in the field. For create a correlation between penetration rate and rock properties, drilling condition and drilling pattern, artificial neural networks (ANN) were used. For this purpose, 102 blastholes were observed and drilling condition, drilling pattern and time of drilling in each blasthole were recorded. To obtain a correlation between this data and prediction of penetration rate, MATLAB software was used. To train the pattern of ANN, 77 data has been used and 25 of them found for testing the pattern. Performance of ANN models was assessed through the root mean square error (RMSE) and correlation coefficient (R2). For optimized model (14-14-10-1) RMSE and R2 is 0.1865 and 86%, respectively, and its sensitivity analysis showed that there is a strong correlation between penetration rate and RQD, rotation and blasthole diameter. High correlation coefficient and low root mean square error of these models showed that the ANN is a suitable tool for penetration rate prediction.

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20

Zhang, Xinxin, Shaohe Zhang, Yongjiang Luo i Dongyu Wu. "Experimental study and analysis on a fluidic hammer—an innovative rotary-percussion drilling tool". Journal of Petroleum Science and Engineering 173 (luty 2019): 362–70. http://dx.doi.org/10.1016/j.petrol.2018.10.020.

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21

Ma, Mingxin, i Zongzheng Tian. "Simulation and Filed Test on Dynamic Formation Mechanism of the Rotary Percussion Drilling Tool". IOP Conference Series: Earth and Environmental Science 514 (3.07.2020): 022046. http://dx.doi.org/10.1088/1755-1315/514/2/022046.

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22

Brito, Diego, René Gómez, Gonzalo Carvajal, Lorenzo Reyes-Chamorro i Guillermo Ramírez. "Identification of Impact Frequency for Down-the-Hole Drills Using Motor Current Signature Analysis". Applied Sciences 13, nr 8 (7.04.2023): 4650. http://dx.doi.org/10.3390/app13084650.

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In rotary-percussion drilling, the impact frequency is a crucial variable that is closely linked to operational factors that determine the efficacy of the drilling process, such as the rate of penetration, bit wear, and rock mass characteristics. Typical identification methods rely on complex simulation models or the analysis of different sensor signals installed on specially adapted setups, which are difficult to be implemented in the field. This paper presents a novel study where the impact frequency is identified by motor current signature analysis (MCSA) applied to an induction motor driving a DTH drilling setup. The analysis of the case study begins with the definition of characteristic drilling stages where the pressure and sound signals allow the detection of an impact frequency of 14.10 Hz, which is then used as a reference to validate three MCSA identification approaches. As a result of the analysis, the envelope approach is the most robust for nearly real-time implementations considering its simplicity and range of coverage. Experimental results provide evidence about the feasibility of the proposed MCSA methods to be integrated into Measurement-While-Drilling (MWD) systems to improve drilling condition monitoring and rock mass characterization.

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23

Ihnatov, A., i I. Askerov. "Study the possibilities of application impact pulses in construction of wells". Collection of Research Papers of the National Mining University 69 (czerwiec 2022): 206–2017. http://dx.doi.org/10.33271/crpnmu/69.206.

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Purpose. Analysis of the theoretical foundations, design schemes and methods for calculating the technical and technological support of drilling cycle operations using dynamic shock impulses in order to intensify destructive processes at the bottom of a well under construction. Research methodology. Laboratory studies of the features of the functioning of devices for generating shock pulses were carried out using modern methods of experimental research, methods for processing research results in the EXCEL, MATHCAD environment, instrumentation (pressure gauges, flow meters) and materials. The flow of well circulation and destructive technological actions was modeled on pilot wells of the training drilling site of the Dnipro University of Technology using a ZIF-650M drilling rig and a UKB-4P drilling rig, also the corresponding main drilling tool. Research results. Theoretical and practical foundations of the process of operation of shock pulse generators - drilling hydraulic hammers are formulated. A detailed analysis of specific works and studies shows the prospects for the development of hydropercussion drilling methods that are effective both from the standpoint of fracture mechanics and the energy intensity of this process. This, in turn, will make it possible to determine the most rational parameters for the destruction of rock at the bottom of the well, that is, maximum productivity with minimal energy consumption. The basic principles of the mechanism of functioning of hydraulic impact devices are studied with the derivation of the most important analytical dependencies characterizing their workflow. Originality. The high efficiency of the percussion-rotary drilling method lies in the significant value of the rate of application of the breaking load, which, when using hydraulic percussion machines, is subject to wide variation. Practical implications. The theoretical foundations are considered and radically new design schemes for the implementation of devices for generating shock pulses (hydraulic hammers) are created, the use of which will ensure the constancy of the process of deepening the bottom hole with a high degree of productivity and efficiency, in addition, it is possible to organically use these devices in technological schemes for eliminating well complications.

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Konurin, AI, AP Khmelinin i EV Denisova. "Geo-navigation system for rotary percussion drilling in rocks of high and low electrical conductivity". IOP Conference Series: Earth and Environmental Science 134 (marzec 2018): 012030. http://dx.doi.org/10.1088/1755-1315/134/1/012030.

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Oparin, V. N., V. V. Timonin, V. N. Karpov i B. N. Smolyanitsky. "Erratum to: Energy-Based Volumetric Rock Destruction Criterion in the Rotary–Percussion Drilling Technology Improvement". Journal of Mining Science 54, nr 1 (styczeń 2018): 180. http://dx.doi.org/10.1134/s106273911801351x.

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Liao, Hua-Lin, Xia Jia, Ji-Lei Niu, Yu-Cai Shi, Hong-Chen Gu i Jun-Fu Xu. "Flow structure and rock-breaking feature of the self-rotating nozzle for radial jet drilling". Petroleum Science 17, nr 1 (9.11.2019): 211–21. http://dx.doi.org/10.1007/s12182-019-00378-0.

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Abstract For improving the hole-enlarging capability, roundness and rock-breaking efficiency of the nozzle in radial jet drilling, a new structure of self-rotating nozzle was put forward. The flow structure and rock-breaking features of the self-rotating nozzle were investigated with sliding mesh model and labortary tests and also compared with the straight and the swirling integrated nozzle and multi-orifice nozzle which have been applied in radial jet drilling. The results show that the self-rotating jet is energy concentrated, has longer effective distance, better hole-enlarging capability and roundness and impacts larger circular area at the bottom of the drilling hole, compared with the other two nozzles. Forward jet flow generated from the nozzle is peak shaped, and the jet velocity attenuates slowly at the outer edge. Due to periodic rotary percussion, the pressure fluctuates periodically on rock surface, improving shear and tensile failures on the rock matrix and thereby enhancing rock-breaking efficiency. The numerical simulation results of the flow structure of the nozzle are consistent with the experiments. This study provides an innovative approach for radial jet drilling technology in the petroleum industry.

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Chi, Nguyen Mai, Hoang Viet Hung, Akihiko Wakai, Go Sato i Nguyen Ha Phuong. "The Helical Anchor Type with Application as a Horizontal Drainage Equipment for Slope Protection". Journal of Disaster Research 16, nr 4 (1.06.2021): 495–500. http://dx.doi.org/10.20965/jdr.2021.p0495.

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Helical anchors, sometimes referred to as screw anchors, screw piles, and helical piles, are a steel screw-in piling and ground anchoring system used for building deep foundations. Screw piles are manufactured using varying sizes of tubular hollow sections for the pile or anchor shaft. This paper presents an innovation of the helical anchor for horizontal drains, a form of subsurface drainage systems for slope protection. To address the adverse effect of groundwater, an expansion of the application of the helical anchor structure in civil engineering is needed, and new drainage solutions are being considered. The features of the helical anchor type for horizontal drainage equipment, analyses of some of its advantages, and conditions of application are presented. Generally, a helical anchor for horizontal drainage is convenient for installation, maintenance, or removal, and is effective for both horizontal drainage and for anchoring the revetment. It is also a typical construction in drainage works, generally performed by a cranking handle or a rotary-percussion-type drilling machine. The helical anchor pipe for horizontal drainage has many segments with joints using a cranking hand for installation and is quite effective where the installation space is narrow or there is no machine. In particular, the installation of this equipment differs significantly from other drilling methods because it can be driven into a sand layer without a hole wall.

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Neskoromnykh, Viacheslav, i Anton Golovchenko. "Performance analysis and modernization of a deflection system based on the downhole hammer". Izvestiya vysshikh uchebnykh zavedenii Gornyi zhurnal, nr 2 (30.03.2020): 5–16. http://dx.doi.org/10.21440/0536-1028-2020-2-5-16.

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Introduction. The method of rotary-percussion drilling with downhole hammers is widely used in mining and geological exploration and is also one of the most promising due to the high well flow rates combined with the durability and reliability of designs used in method implementation. One of the main constraints for field use is the lack of a commercially available deflection system capable of adjusting the direction of the wells with high mechanical speed without reducing the technological parameters of drilling. Research aim is to analyze the performance and modernize the designs of the deflection system based on the downhole machine from the point of view of increasing the accuracy of hole deviation change, as well as to make a dependence synthesis to determine the intensity of the hole deviation change when implementing the mechanism of rock destruction by eccentric impact pulses. Research methodology. The study is based on a set of methods of basic scientific research, in particular analysis, synthesis, formalization, abstraction. Conclusions. Dependence is given for determining the intensity of the hole deviation change depending on the impact system parameters. The working conditions of the hammer with a displaced center of gravity in the design of the deflection system are investigated, an empirical dependence is given for determining the magnitude of the orientation error, and recommendations are given for its reduction. The area of possible application of the presented technical solution is analyzed.

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Kupsch, Walter. "GSC Exploratory Wells in the West 1873-1875". Earth Sciences History 12, nr 2 (1.01.1993): 160–79. http://dx.doi.org/10.17704/eshi.12.2.x2u23409u3877u64.

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Although the Geological Survey of Canada (GSC) was founded in 1842, it was not until 1872, two years after the transfer of Hudson's Bay Company (HBC) lands to the Dominion of Canada, that the first GSC geologist, Director Alfred R. C. Selwyn, came to the western interior. One year later a drilling program he had been promoting in Ottawa saw two wells brought to completion and a third one started.During the period 1873-1875 five wells were drilled by or for the GSC at: Fort Garry (the first to be spudded and at 37 feet the shallowest), Shoal Lake, Rat Creek, Fort Carlton, and Fort Pelly (the deepest at 501 feet and the last to be abandoned). The main objective was to locate sources of water and coal for the future transcontinental railroad then planned to follow a northwesterly route from Winnipeg to Edmonton.Four wells were drilled with a rotary, diamond sieamdrill which had been used in the hard, coal-bearing rocks of Nova Scotia but proved unsuitable for penetrating the glacial drift, loose sands, and soft clays of the prairies.Besides having to deal with technical problems related to the transport of heavy equipment, a GSC drilling party became embroiled in a dispute between Government and Natives over land rights. After encountering an Indian blockade led by Chief Mistiwassis the crew retreated behind the stockade of HBC's Fort Carlton to drill a 175-foot well in August and September 1875.In 1874 an agreement was made between the GSC and John Henry Fairbank, Canada's most prominent oilman, for the drilling of a well at Fort Pelly. A percussion steamdrill, then in common use in the Petrolia, Ontario, oil fields, was the equipment of choice. Work at a drill site north of the fort in the Swan River valley started 25 August 1874 but on 30 October winter forced suspension. The stored equipment was used again the following year when drilling resumed on 6 July. The contracted 500 foot depth was exceeded by 1 foot on 9 October 1875 when the well was abandoned.

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Fan, Yong Tao, Zhi Qiang Huang, De Li Gao, Qin Li i Hai Yan Zhu. "Study on the Mechanism of the Impactor-Bit-Rock Interaction Using 3D FEM Analysis". Advanced Materials Research 189-193 (luty 2011): 2280–84. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.2280.

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To reveal the mechanism of the impactor-bit-rock interaction in geophysical prospecting percussion drilling, considering the coupling effect of the static pressure, impact force and rotary cutting, constructing the physical model of the impactor-bit-rock interaction, and using the finite element methods (FEM), three-dimensional (3D) model of the impactor-bit-rock interaction is established. Using the finite element analysis software (ANSYS/LS-DYNA), the 3D FEM analysis of the impactor-bit-rock interaction is carried out when compressed air pressure is 0.8 MPa, 0.9 MPa, 1.0 MPa, 1.1 MPa and 1.2 MPa respectively. The results show that: the energy transmission efficiency when piston impacts bit under different air pressure is not high and it should be improved further, bit can not fragment rock until it is impacted by piston, it is found that the best air pressure is 1.0 MPa when the impactor and bit are used to drill granite according to the volume of the fragmented rock and the depth of the crater, the speed and displacement on the radial direction of the piston which should be reduce even eliminate are very harmful. The results are further useful to extend the applications of the geophysical prospecting impactor and hammer bit.

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Tyupin, V. N. "Finding velocity of roller-bit and rotary-percussive drilling using the energy conservation law". Mining informational and analytical bulletin, nr 6 (20.05.2020): 76–84. http://dx.doi.org/10.25018/0236-1493-2020-6-0-76-84.

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Velocity of roller-bit and rotary-percussive drilling depends on many factors distributed in 4 groups in technical literature: rock properties, bit parameters, bit-rock interaction conditions and drilling modes. Literature sources present some very complex formulas which need finding empirical coefficients before determining drilling velocity, i.e. the formulas are difficult to use. Moreover, the formulas neglect jointing of rock masses. At the same time, mathematical relations connecting drilling velocity, drilling mode and drillability of jointed rocks will make it possible to rate drilling processes and adjust blasting parameters. These studies aim to determine velocity of roller-bit and rotary-percussive drilling using the energy conservation law. The used method of mathematical modeling allowed obtaining formulas for rock drilling velocity with regard to drilling modes, bit parameters, factor of rock hardness (strength) and rock mass jointing. The validity of the relations of the roller-bit and rotary-percussive drilling velocity is proved. The reliability of the drilling velocity formulas can be determined by means of investigations performed in open pit mines, with recording of all parameters and with mathematical processing of the data. The mathematical relations connecting drilling velocity, drilling modes, drill bit parameters and drillability of jointed rocks will enable rating of drilling and adjustment of blasting patterns.

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Wang, Yinchao, Qiquan Quan, Hongying Yu, He Li, Deen Bai i Zongquan Deng. "Impact Dynamics of a Percussive System Based on Rotary-Percussive Ultrasonic Drill". Shock and Vibration 2017 (2017): 1–10. http://dx.doi.org/10.1155/2017/5161870.

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This paper presents an impact dynamic analysis of a percussive system based on rotary-percussive ultrasonic drill (RPUD). The RPUD employs vibrations on two sides of one single piezoelectric stack to achieve rotary-percussive motion, which improves drilling efficiency. The RPUD’s percussive system is composed of a percussive horn, a free mass, and a drill tool. The percussive horn enlarges longitudinal vibration from piezoelectric stack and delivers the vibration to the drill tool through the free mass, which forms the percussive motion. Based on the theory of conservation of momentum and Newton’s impact law, collision process of the percussive system under no-load condition is analyzed to establish the collision model between the percussive horn, the free mass, and the drill tool. The collision model shows that free mass transfers high-frequency small-amplitude vibration of percussive horn into low-frequency large-amplitude vibration of drill tool through impact. As an important parameter of free mass, the greater the weight of the free mass, the higher the kinetic energy obtained by drill tool after collision. High-speed camera system and drilling experiments are employed to validate the inference results of collision model by using a prototype of the RPUD.

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Nazarov, O. Ye, V. F. Gankevych, O. A. Pashchenko i V. Ya Kiba. "Reduction of power-intensivity at rotary-percussive drilling". Geo-Technical mechanics, nr 150 (2020): 146–55. http://dx.doi.org/10.15407/geotm2020.150.146.

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Kahraman, S. "Rotary and percussive drilling prediction using regression analysis". International Journal of Rock Mechanics and Mining Sciences 36, nr 7 (październik 1999): 981–89. http://dx.doi.org/10.1016/s0148-9062(99)00050-9.

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BATAKO, A. D., V. I. BABITSKY i N. A. HALLIWELL. "A SELF-EXCITED SYSTEM FOR PERCUSSIVE-ROTARY DRILLING". Journal of Sound and Vibration 259, nr 1 (styczeń 2003): 97–118. http://dx.doi.org/10.1006/jsvi.2002.5158.

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Śliwa, Tomasz, i Paweł Śnieżek. "Drilling bits in percussive-rotary drilling technology (down the hole DTH)". AGH Drilling, Oil, Gas 29, nr 4 (2012): 453. http://dx.doi.org/10.7494/drill.2012.29.4.453.

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Hung, Nguyen Van, Laurent Gerbaud, Raphael Souchal, Christophe Urbanczyk i C. Fouchard. "PENETRATION RATE PREDICTION FOR PERCUSSIVE DRILLING WITH ROTARY IN VERY HARD ROCK". Vietnam Journal of Science and Technology 54, nr 1 (20.02.2016): 133. http://dx.doi.org/10.15625/0866-708x/54/1/5956.

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This paper is the following part of our project to predict the penetration rate for percussive drilling with rotary in very hard rock. As results in [1] have been shown that the rate of penetration was strong influent by Brazilian tensile strength and it was exist the correlation between the rate of penetration and the rock properties. Yet, the study was valid on six hard rocks in experimental result of test tricone and rotary with percussive. All relationships have been shown but the coefficient R2 is still very low. This paper will present a new relationship with high value of R2 based on previous data and also establish a mathematical relationship, numerical model to predict the penetration rate.

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Chen, J., i Z. Q. Yue. "Weak zone characterization using full drilling analysis of rotary-percussive instrumented drilling". International Journal of Rock Mechanics and Mining Sciences 89 (listopad 2016): 227–34. http://dx.doi.org/10.1016/j.ijrmms.2016.09.012.

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Rabia, Hussain. "A unified prediction model for percussive and rotary drilling". Mining Science and Technology 2, nr 3 (czerwiec 1985): 207–16. http://dx.doi.org/10.1016/s0167-9031(85)90149-5.

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Franca, Luiz F. P. "A bit–rock interaction model for rotary–percussive drilling". International Journal of Rock Mechanics and Mining Sciences 48, nr 5 (lipiec 2011): 827–35. http://dx.doi.org/10.1016/j.ijrmms.2011.05.007.

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Erem’yants, V. E. "Effectual design of hammers for rotary-percussive drilling machines". Journal of Mining Science 47, nr 5 (wrzesień 2011): 628–35. http://dx.doi.org/10.1134/s106273914705011x.

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Shi, X., Q. Quan, De Wei Tang, S. Jiang, X. Hou i Z. Deng. "Experimental Research on Drilling and Sampling of Lunar Soil Simulant". Applied Mechanics and Materials 233 (listopad 2012): 218–23. http://dx.doi.org/10.4028/www.scientific.net/amm.233.218.

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China is conducting a lunar exploration mission named “Chang’e project”. The goal of the exploration mission is to obtain the drilling core without breaking the original geological information. Since the characteristics of drilling object in lunar exploration mission are different from the soil on the earth, efforts should be greatly made on special sampling methods, sampling drills and the appropriate sampling strategies. Herein, we proposed a novel drilling and coring method, in which a soft-bag is mounted in a rotary-percussive drill for lunar soil sampling. In the process of lunar soil drilling, the driving parameters of several moving units are strongly coupled. The moving units should work cooperatively in order to acquire high coring rate and low power consumption. The relationship between the coring quantity and the drilling parameters will be discussed through experiments. The research showed a clear correlation between rotary drilling torque, sample quantity and rev-feed ratio under specific lunar soil conditions.

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Derdour, Fatima Zohra, Mohamed Kezzar, Ouafae Bennis i Lakhdar Khochmane. "The optimization of the operational parameters of a rotary percussive drilling machine using the Taguchi method". World Journal of Engineering 15, nr 1 (12.02.2018): 62–69. http://dx.doi.org/10.1108/wje-03-2017-0067.

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Purpose This paper aims to determine the rational operating regime of a rotary percussive drilling machine under optimal conditions. Design/methodology/approach An orthogonal array of Taguchi, signal-to-noise (S/N) ratio, ANOVA Pareto analysis and regression analysis are used to investigate the effect of drilling operational factors on the penetration rate. A series of experiments based on orthogonal arrays L27 was carried out, and the results were collected and analyzed using the statistical software Minitab. Findings The statistical analysis (ANOVA Pareto) of the results showed that among all setting parameters, air pressure is the most essential element that affects the penetration rate. The rational operating regime of the rotary percussive drilling machine was determined with optimum air pressure values of 17 bar (Level 3), rotation speed of 60 rpm (Level 3) and a thrust of 825 kgf (Level 2), which maximize the penetration rate. A quadratic regression model was developed for the penetration rate. The predicted values are compared with the experimental data and are considered to be in good agreement. Originality/value The study uses the orthogonal array of Taguchi, S/N ratio, ANOVA Pareto analysis and regression analysis to investigate the effect of drilling operational factors on the penetration rate.

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Bao, Ze Fu, Yuan Zhi Zhang i Jiang Ping Wang. "Establishment of the Dynamics Modal for the Fire-Suction Hydraulic Impactor". Applied Mechanics and Materials 716-717 (grudzień 2014): 743–46. http://dx.doi.org/10.4028/www.scientific.net/amm.716-717.743.

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The drilling speed to shorten the drilling cycle plays a decisive role in drilling process.Using the fire-suction hydraulic impactor can achieve percussive-rotary drilling.The fire-suction hydraulic impactor can transform drilling fluid’s pressure energy into mechanical energy.Withing bit static pressure,rotational cutting and vertical impact loading,the way of rock breaking will be faster and more efficient.Using Newton's second law to establish the corresponding kinetic equations,motion equations and displacement equations.The comparison between parameters and measured data validated the correctness of the formulas,which provides a theoretical basis for the products to improve and seriation.

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Karpov, V. N., i A. M. Petreev. "Determination of Efficient Rotary Percussive Drilling Techniques for Strong Rocks". Journal of Mining Science 57, nr 3 (maj 2021): 447–58. http://dx.doi.org/10.1134/s1062739121030108.

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Karpov, V. N., i A. M. Petreev. "Determination of Efficient Rotary Percussive Drilling Techniques for Strong Rocks". Физико-технические проблемы разработки полезных ископаемых, nr 3 (2021): 96–109. http://dx.doi.org/10.15372/ftprpi20210310.

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Li, S., Q. Quan, De Wei Tang, S. Jiang, X. Hou i Z. Deng. "Research on a Rotary-Percussive Coring Drill for Lunar Exploration". Applied Mechanics and Materials 233 (listopad 2012): 297–302. http://dx.doi.org/10.4028/www.scientific.net/amm.233.297.

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China is launching the Chang'e project to send automated machine for acquiring the lunar soil and returning to the earth. Thus, we are trying to develop a kind of effective mechanism for the exploration mission of lunar soil coring. This paper presents a rotary-percussive coring drill which is a novel scheme for the deep surface soil acquirement. Two degrees of freedom are included in the proposed drill mechanism. Specifically-designed drill unit including auger and drill bit is employed to finish the coring of the simulant of lunar regolith. We have proposed a novel coring concept named soft-bag coring. Since there is no relative motion between the soft-bag and the cut soil core, the soft-bag method may keep the original stratification of lunar soil. A test-bed has been developed to conduct experimental tests under different drilling parameters and circumstances. The related drilling parameters such as rotary speed, penetration ratio, and percussive frequency are adjusted to adapt to different situations in the experiments. The experimental results indicate that the specifically considered drill mechanism with soft-bag inside can get high coring ratio and excellent stratification of the soil.

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Alexeev, Sergey E., Bakyt Kubanychbek i Alexander Yu Primychkin. "CREATION OF PORTABLE DOWNHOLE HAMMERS FOR ROTARY-PERCUSSIVE DRILLING OF BOREHOLES". Interexpo GEO-Siberia 2, nr 3 (21.05.2021): 98–106. http://dx.doi.org/10.33764/2618-981x-2021-2-3-98-106.

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This paper presents the design of portable downhole hammers for borehole diameters of 43 and 76 mm when drilling with a combined rotary-percussive method in coal mines. The scope of use is described. Features and advantages of prototypes are shown. The characteristics of DHH and research data are given. The conditions of production tests and operating results are described.

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Reppert, P. M. "Seismic While Drilling (SWD) with a Rotary Percussive Sounding System (RPSS)". Journal of Environmental & Engineering Geophysics 18, nr 3 (1.09.2013): 169–82. http://dx.doi.org/10.2113/jeeg18.3.169.

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Tanaino, A. S., i A. A. Lipin. "State and Prospects of the Percussive-Rotary Blasthole Drilling in Quarries". Journal of Mining Science 40, nr 2 (marzec 2004): 188–98. http://dx.doi.org/10.1023/b:jomi.0000047863.55151.a6.

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