Review and prospect of coal rock hydraulic fracturing physical experimental research [PDF]
, 2022 Physical simulation of hydraulic fracturing is an approximate representation of fracture evolution and its dynamic process, which represents an important direction of fracture evolution research.
Le LIU +8 more
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Research on temporal−spatial relationship between ground fracturing wells and underground drilling for substitution drainage of during extraction exhaustion period [PDF]
, 2022 In order to make use of the favorable extraction conditions formed by ground fracturing to carry out the underground borehole replacement extraction in the drainage exhaustion period of ground fracturing wells, and form the advanced treatment of ground ...
Jian HE +5 more
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Hydraulic fracturing effect of CBM vertical well and its impact on productivity: a case study of Yaojie Mining Area [PDF]
, 2023 CBM reservoir is a typical fracture-controlled gas reservoir, and the scale of fracturing and fracture-filling effect have decisive control on gas well productivity.
Daibing MA, Lichao CHEN
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Emergency management of retinal detachment with pneumatic retinopexy and laser photocoagulation [PDF]
, 2013 AIM: To evaluate the effects, surgical indications, complications and technique of pneumatic retinopexy(PR)combined with postoperative laser photocoagulation for the emergency treatment of retinal detachment.METHODS: A review of 45 consecutive eyes of 45
Yan-Jun Huang +4 more
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Dizhen xuebao, 2023 使用宁夏四个地电台站记录的地电场数据，研究其变化特征、频谱特征、与区域气压变化的关系及测量方向与附近断裂走向的关系。研究结果显示：部分地电场具有日变化特征，同时也具有气压非周期性变化特征，这种特征与气压变化呈负相关，当场地裂隙优势方位与附近断裂带方位呈近似垂直或较大夹角时，测向与附近断裂走向近垂直的地电场与气压相关性较高。分析认为地电场具有气压非周期变化特征是因为测量位置基岩孔隙的渗透率与附近断裂裂缝的渗透率不同，流体渗流过程中气压系统变化引起的流体“窜流”所致。
Xuebo Li +3 more
doaj +1 more source
Dizhen xuebao, 2023 为了深入分析2022年1月8日青海门源MS6.9地震引发的不同类型地表破裂特征及震害现象，本文依据沿此次地震地表破裂带进行的野外实地考察和无人机航拍解译，将破裂带沿线的典型同震地表破裂特征归纳为：① 多种典型几何细结构，包括雁列状次级破裂、左旋左阶拉张区、左旋右阶挤压区以及树枝状、网状破裂等；② 多种地貌标志物水平位错，包括牧区围栏、车辙印、动物脚印和冲沟冰面的左旋断错等；③ 多种类型垂直破裂，如逆冲型地震陡坎和正断型地震陡坎；④ 多种类型挤压破裂，如挤压脊和挤压鼓包；⑤ 不同类型张性裂缝带 ...
Ruihuan Su +5 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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Experimental study on characterization hydraulic fracturing coal fracture network and evolution of fracture forming performance [PDF]
, 2023 The accurate characterization of coal fracture network can effectively evaluate the fracturing effect of the deep coal seam after hydraulic fracturing.
Changbao JIANG, Guangqi WANG, Yinlan FU
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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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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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