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Enhancement of long hole drilling efficiency with drilling units with replaceable core tubes [PDF]
Journal of Mining Science, 2016 The article presents a procedure to calculate fluid pressure losses in hole drilling with units equipped with replaceable core tubes and using non-Newtonian mud fluids. It is found that main hydraulic loss takes place when mud fluid flows in clearing between a drill string and drill hole walls. Numerical modeling has shown that it is possible to reduce
Neverov, A. L. +3 more
openaire +6 more sources
Research on Vibration Reduction and ROP Acceleration for Drilling in KOA Oilfield,Kazakhstan
Shiyou jixie, 2023 The KOA oilfield is located in the eastern margin of the Caspian Basin,Kazakhstan.The shallower Upper Permian of the oilfield is found with severe interbeding between sandstone and mudstone as well as interlayers of mudstone/slate and conglomerate.The ...
Wang Jianning +4 more
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Energy Reports, 2023 Geothermal reservoir rocks have the characteristics of high stress, high hardness and high abrasiveness, which makes the drilling rate low and the drilling cost high, and hinders the application of geothermal energy. Improving drilling efficiency in hard
Jian Huang +6 more
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Energy Science & EngineeringEffective hole cleaning is essential to drilling success, with poor cuttings transport leading to reduced penetration rates, stuck pipe, and increased non‐productive time.
Mohammad Ramyar +3 more
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Meitan xuebaoPressure-relief borehole construction is one of the most common drilling operations in coal mines, which generally has characteristics such as coarse diameter, multiple construction angles, and large depth.
Housheng JIA +6 more
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Full Dip Drill and Drilling Technology in Bottom Suction Roadway
Meikuang Anquan, 2020 To improve the construction efficiency of bottom suction roadway through layer hole, the ZDY3600LQ type crawler drill was developed, meanwhile, the hard rock drilling tool assembly with hydraulic DTH hammer and PDC bit was developed. Test results showed
WU Di, ZHAO Jiangpeng, XU Pengbo
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Rate of Penetration Optimization using Moving Horizon Estimation [PDF]
Modeling, Identification and Control, 2016 Increase of drilling safety and reduction of drilling operation costs, especially improvement of drilling efficiency, are two important considerations in the oil and gas industry. The rate of penetration (ROP, alternatively called as drilling speed) is
Dan Sui, Bernt Sigve Aadnøy
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Jin'gangshi yu moliao moju gongcheng, 2016 The diamond bit trends to slip when drilling ultra-hard compact and weak-abrasion rock formation.This paper analyzes the characteristic of ultra-hard compact and weak abrasion rock formation,expounds the reason of bit slipping and introduces the research
WANG Jialiang, ZHANG Shaohe
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Design and Research on the Drilling and Lifting Device of Coalbed Methane Drilling Machine [PDF]
E3S Web of ConferencesIn response to the problems of complex operation procedures, long auxiliary time, and impact on drilling efficiency in coalbed methane drilling construction, a fast tripping and lifting device for coalbed methane drilling rig is designed.
Liu Qi
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Study on Construction Technology of Rock-socketed Pile Group for Offshore Wind Turbine Generators
Renmin Zhujiang, 2020 This paper simulates and analyzes the driveability of steel pipe pile under complex geological conditions by the GRLWEAP software,and studies the construction technology of integrated rock-socketed pile group based on the statistical analysis of the ...
CHENG Zishuo
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