Results 1 to 10 of about 3,048 (244)
Shiyou shiyan dizhi, 2022 Aromatic parameters have been widely applied to assess the maturity of organic matters. Some parameters may not only be affected by maturation, but also more affected by organic matter source, sedimentary environment, etc.
Zhijun CHEN +6 more
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Meikuang Anquan, 2022 Aiming at the characteristics of poor cementation and broken seam in Wangpo Coal Mine, the pneumatic directional drilling test of soft-fragmentized coal seam with high-pressure nitrogen slag discharge was carried out.
SUN Yongxin +5 more
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Meikuang Anquan, 2022 The gas control in large panel of underground coal mine objectively requires the length of ultra-long directional drilling along the coal seam to reach more than 3 000 m, however, restricted by the current directional drilling technology and equipment in
XU Chao, JIANG Lei, LI Quanxin, FANG Jun, CHEN Pan, LIU Zhi
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Effect Evaluation of Nanosilica Particles on O/W Emulsion Properties
Geofluids, 2022 O/W emulsion reinforced by nanosilica particle has good application in hydrocarbon development. However, there are few reports on the influence of nanosilica particles on the oil-water interface of O/W emulsion.
Guanzheng Qu +4 more
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The optimization algorithm for application in directional drilling trajectories of energy field
Energy Reports, 2022 Recently, the directional drilling technology (DDT) has been extensive used in many energy field such as coal geological exploration, gas drainage and artificial freezing engineering etc.
Shu-jie Liu +3 more
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Research on rotary geosteering drilling technology and equipment in underground coal mine
Meitan kexue jishu, 2022 In view of the limitations of directional drilling technology and equipment for underground gas drainage in coal mining areas, such as low degree of automation, low drilling ratio of target formation, slow drilling rate of rock formation, and small ...
Ke YAO +7 more
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Directional drilling technologies equipment and application for hard rock in underground coal mines
Meikuang Anquan, 2021 According to the problems existing in directional drilling of hard rock in coal mines, such as low drilling efficiency, easy bearing pressure in deep hole drilling and easy damage of drilling tools in hole, based on the analysis of the causes of the ...
DOU Xuqian, WANG Li
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Technical difficulties and innovation in the Jiangyin Yangtze River crossing project of 3300 m HDD
Natural Gas Industry B, 2014 The Jiangyin Yangtze River Crossing Project sets up a record with the length of horizontal directional drilling (HDD) of 3300 m in the world. Inevitably, many technical difficulties might exist in pilot hole docking, reaming torque, property requirement ...
Wu Yiquan +4 more
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Meikuang Anquan, 2020 Aiming at the problems such as low efficiency and depth limit of directional drilling caused by the support pressure of drilling tools in the directional drilling of ultra-deep hole in underground coal mine, learning from the twist drilling technology ...
JIANG Lei, XU Chao, LI Quanxin, WANG Xian
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Hole completion technology for high level directional long borehole in complex roof
Meikuang Anquan, 2023 Aiming at the problems existing in the construction of high directional drilling in Tingnan Coal Mine roof, such as stratum breakage in open hole section, mudstone shrinkage in directional hole section, low efficiency of two-stage reaming and easy ...
Changbao JING +4 more
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