Study on horizontal completion with composite tubular string in coal reservoir with complex coal structure [PDF]
, 2023 Aiming at the problems such as large deformation difference of coal structure, strong heterogeneity of physical properties, complex coal structure during horizontal drilling, single completion & stimulation technology and so on, a completion technology ...
Baoan XIAN +3 more
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Mechanism and technical system of ground and underground combined drainage of CBM in “four region linkage” in coal mining area [PDF]
, 2022 In order to better realize the safe and efficient coordinated development of coal and CBM resources in high gassy mining areas, the four regions (planning region, preparation region, production region and coal mined-out region) linkage ground-underground
Changjiang JI +4 more
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Thingking and utilization technology of coalbed methane in soft and low permeability coal seams in Huainan Mining Area [PDF]
, 2022 In order to solve the problems that restrict the efficient development of coalbed methane resources under the conditions of soft and low permeability outburst coal seams in Huainan Mining Area, such as complex coal seam structure, multi-source gas ...
Benliang CHEN +8 more
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Simulation investigation on spatial deflection of multiples fractures of multistage perforation clusters in hydraulic fracturing [PDF]
, 2023 The morphology of complex fracture network in hydraulic fracturing engineering in deep tight oil and gas reservoir is a crucial factor affecting oil and gas recovery, and it is necessary to accurately evaluate and optimize the fracture propagation ...
Hao WANG, Nana LIU, Yongliang WANG
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Key technology progress of surface extraction project deployment based on coordinated development of CBM and coal [PDF]
, 2022 The surface extraction of CBM in coal mine area has the multiple effects of improving the efficiency of safe coal mining, using CBM resource cleanly and reducing gas emission.
Jianlu CHAI +4 more
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Exploration characteristics of coal and rock boundary in horizontal well with Azimuth electromagnetic wave instrument PeriScope [PDF]
, 2023 In coal mine production, advance and precise identification of coal-rock interface can improve recovery and reduce mining risk, which is one of the bottleneck technologies to realize intelligent coal mining.
Fei LI +5 more
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Optimization and application of sand bailing technology for coalbed methane horizontal wells [PDF]
Objective and Methods Coalbed methane (CBM) horizontal wells face challenges such as sand accumulation in completion strings, pipe wall scaling, and pump sticking, leading to declined CBM production or shutdown of these wells.
Bao’an XIAN +10 more
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Research progress,key scientific issues,and prospects of segmented fracturing and pressure relief gas drainage technology for coal seam roof horizontal wells [PDF]
The segmented fracturing and pressure relief gas drainage technology in the horizontal well of the coal seam roof is a key means to guide the efficient gas extraction in deep, high gas, soft and low permeability coal seams.Based on this, a full lifecycle
Caiqing LI +7 more
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Research on adaptability of fracturing technologies for CBM horizontal wells based on the viewpoint of “unblocking and channeling” [PDF]
Horizontal well fracturing stimulation is currently the most core technical means to achieve efficient development of unconventional coalbed methane resources.
Jigang GUO +11 more
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CFD simulation on in-situ ignition of UCG in deep coal seam [PDF]
Underground coal gasification (UCG) as an alternative coal mining technology is attracting much attention. However, due to the high experimental cost of UCG, the evolution mechanism of coal seam should be deeply explored prior to the implement of ...
Can FANG +10 more
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