The Experts below are selected from a list of 55125 Experts worldwide ranked by ideXlab platform
Lijia Li - One of the best experts on this subject based on the ideXlab platform.
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theoretical analysis and design of hydro hammer with a jet actuator an engineering application to improve the penetration rate of directional Well Drilling in hard rock formations
PLOS ONE, 2018Co-Authors: Jiangfu He, Yunpei Liang, Lijia LiAbstract:: Rapid horizontal directional Well Drilling in hard or fractured formations requires efficient Drilling technology. The penetration rate of conventional hard rock Drilling technology in horizontal directional Well excavations is relatively low, resulting in multiple overgrinding of drill cuttings in bottom boreholes. Conventional Drilling techniques with reamer or diamond drill bit face difficulties due to the long construction periods, low penetration rates, and high engineering costs in the directional Well Drilling of hard rock. To improve the impact energy and penetration rate of directional Well Drilling in hard formations, a new Drilling system with a percussive and rotary Drilling technology has been proposed, and a hydro-hammer with a jet actuator has also been theoretically designed on the basis of the impulse hydro-turbine pressure model. In addition, the performance parameters of the hydro-hammer with a jet actuator have been numerically and experimentally analyzed, and the influence of impact stroke and pumped flow rate on the motion velocity and impact energy of the hydro-hammer has been obtained. Moreover, the designed hydro-hammer with a jet actuator has been applied to hard rock Drilling in a trenchless Drilling program. The motion velocity of the hydro-hammer ranges from 1.2 m/s to 3.19 m/s with diverse flow rates and impact strokes, and the motion frequency ranges from 10 Hz to 22 Hz. Moreover, the maximum impact energy of the hydro-hammer is 407 J, and the pumped flow rate is 2.3 m3/min. Thus, the average penetration rate of the optimized hydro-hammer improves by over 30% compared to conventional directional Drilling in hard rock formations.
Yunpei Liang - One of the best experts on this subject based on the ideXlab platform.
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theoretical analysis and design of hydro hammer with a jet actuator an engineering application to improve the penetration rate of directional Well Drilling in hard rock formations
PLOS ONE, 2018Co-Authors: Jiangfu He, Yunpei Liang, Lijia LiAbstract:: Rapid horizontal directional Well Drilling in hard or fractured formations requires efficient Drilling technology. The penetration rate of conventional hard rock Drilling technology in horizontal directional Well excavations is relatively low, resulting in multiple overgrinding of drill cuttings in bottom boreholes. Conventional Drilling techniques with reamer or diamond drill bit face difficulties due to the long construction periods, low penetration rates, and high engineering costs in the directional Well Drilling of hard rock. To improve the impact energy and penetration rate of directional Well Drilling in hard formations, a new Drilling system with a percussive and rotary Drilling technology has been proposed, and a hydro-hammer with a jet actuator has also been theoretically designed on the basis of the impulse hydro-turbine pressure model. In addition, the performance parameters of the hydro-hammer with a jet actuator have been numerically and experimentally analyzed, and the influence of impact stroke and pumped flow rate on the motion velocity and impact energy of the hydro-hammer has been obtained. Moreover, the designed hydro-hammer with a jet actuator has been applied to hard rock Drilling in a trenchless Drilling program. The motion velocity of the hydro-hammer ranges from 1.2 m/s to 3.19 m/s with diverse flow rates and impact strokes, and the motion frequency ranges from 10 Hz to 22 Hz. Moreover, the maximum impact energy of the hydro-hammer is 407 J, and the pumped flow rate is 2.3 m3/min. Thus, the average penetration rate of the optimized hydro-hammer improves by over 30% compared to conventional directional Drilling in hard rock formations.
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Schematic diagram of the field test configuration while in horizontal directional Well Drilling with hydro-hammer.
2018Co-Authors: Yunpei Liang, Yong-jiang LuoAbstract:Schematic diagram of the field test configuration while in horizontal directional Well Drilling with hydro-hammer.
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Schematic diagram of the fluid kinematics of a jet actuator in horizontal directional Well Drilling with hydro-hammers.
2018Co-Authors: Yunpei Liang, Yong-jiang LuoAbstract:Schematic diagram of the fluid kinematics of a jet actuator in horizontal directional Well Drilling with hydro-hammers.
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Layout of construction site in horizontal directional Well Drilling.
2018Co-Authors: Yunpei Liang, Yong-jiang LuoAbstract:Layout of construction site in horizontal directional Well Drilling.
Takashi Okabe - One of the best experts on this subject based on the ideXlab platform.
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comprehensive studies on hole cleaning and ecd management in long extended reach geothermal Well Drilling
2014Co-Authors: Shigemi Naganawa, Takashi OkabeAbstract:Effective hole cleaning and maintenance of an appropriate equivalent circulating density (ECD) is much more difficult to implement in long extended-reach geothermal Wells than in oil and gas Wells. We conducted a number of cuttings transport experiments, using a large-scale flow-loop apparatus and field measurements of annular pressure, using PWD (pressure while Drilling) in a geothermal directional Well recently drilled in Japan. Numerical simulation for the targeted long extended-reach geothermal Well with a total depth 3,000 m, horizontal departure of 2,500 m, and maximum hole inclination angle of 70° was performed using a transient hydraulics simulator we developed and modified in this study on the basis of these experiments and field data. In addition, the optimum hydraulics conditions for effective hole cleaning and appropriate ECD management in long extended-reach geothermal Drilling are discussed in this study.
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comprehensive studies on hole cleaning and ecd management in long extended reach geothermal Well Drilling
2014Co-Authors: Shigemi Naganawa, Takashi OkabeAbstract:Effective hole cleaning and maintenance of an appropriate equivalent circulating density (ECD) is much more difficult to implement in long extended-reach geothermal Wells than in oil and gas Wells. We conducted a number of cuttings transport experiments, using a large-scale flow-loop apparatus and field measurements of annular pressure, using PWD (pressure while Drilling) in a geothermal directional Well recently drilled in Japan. Numerical simulation for the targeted long extended-reach geothermal Well with a total depth 3,000 m, horizontal departure of 2,500 m, and maximum hole inclination angle of 70° was performed using a transient hydraulics simulator we developed and modified in this study on the basis of these experiments and field data. In addition, the optimum hydraulics conditions for effective hole cleaning and appropriate ECD management in long extended-reach geothermal Drilling are discussed in this study.
Liang Hongjun - One of the best experts on this subject based on the ideXlab platform.
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silicon carbide ceramic cylinder sleeve for Well Drilling slurry pump and preparation method of silicon carbide ceramic cylinder sleeve
2015Co-Authors: Bao Yuzhi, Zhao Wenlin, Li Hu, Jiang Wei, Liang HongjunAbstract:The invention relates to a silicon carbide ceramic cylinder sleeve for a Well-Drilling slurry pump. The silicon carbide ceramic cylinder sleeve is composed of micron silicon carbide, submicron boron carbide powder, nanometer carbon black, and an organic binder, the amount ratios of which are, per one hundred grams of dried submicron boron carbide powder, 0.2-4.8% of submicron boron carbide powder, 12-25% of nanometer carbon black, and 6-25% of the organic binder. According to the invention, silicon carbide is taken as a raw material, and the silicon carbide ceramic cylinder sleeve is obtained via iso-static cool pressing and pressureless sintering. The hardness of the resultant silicon carbide ceramic cylinder sleeve can reach more than 26GPa, and is good in abrasive resistance, excellent in chemical resistance, and uniform and dense in inner organization structure. After the silicon carbide ceramic cylinder sleeve is subjected to fine machining, the internal surface smoothness can reach Ra0.2, and the service life can reach 4500 hours. The silicon carbide ceramic cylinder sleeve in the invention can work in mediums, such as Well-Drilling slurry or other liquid with high corrosivity.
Jiangfu He - One of the best experts on this subject based on the ideXlab platform.
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theoretical analysis and design of hydro hammer with a jet actuator an engineering application to improve the penetration rate of directional Well Drilling in hard rock formations
PLOS ONE, 2018Co-Authors: Jiangfu He, Yunpei Liang, Lijia LiAbstract:: Rapid horizontal directional Well Drilling in hard or fractured formations requires efficient Drilling technology. The penetration rate of conventional hard rock Drilling technology in horizontal directional Well excavations is relatively low, resulting in multiple overgrinding of drill cuttings in bottom boreholes. Conventional Drilling techniques with reamer or diamond drill bit face difficulties due to the long construction periods, low penetration rates, and high engineering costs in the directional Well Drilling of hard rock. To improve the impact energy and penetration rate of directional Well Drilling in hard formations, a new Drilling system with a percussive and rotary Drilling technology has been proposed, and a hydro-hammer with a jet actuator has also been theoretically designed on the basis of the impulse hydro-turbine pressure model. In addition, the performance parameters of the hydro-hammer with a jet actuator have been numerically and experimentally analyzed, and the influence of impact stroke and pumped flow rate on the motion velocity and impact energy of the hydro-hammer has been obtained. Moreover, the designed hydro-hammer with a jet actuator has been applied to hard rock Drilling in a trenchless Drilling program. The motion velocity of the hydro-hammer ranges from 1.2 m/s to 3.19 m/s with diverse flow rates and impact strokes, and the motion frequency ranges from 10 Hz to 22 Hz. Moreover, the maximum impact energy of the hydro-hammer is 407 J, and the pumped flow rate is 2.3 m3/min. Thus, the average penetration rate of the optimized hydro-hammer improves by over 30% compared to conventional directional Drilling in hard rock formations.
