Dynamics evolution and well type optimization of deep well injection in coal mines water by Longfei FENG, Shuangming WANG, Hao WANG

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Promotion and Application of Rock Debris Gamma Spectroscopy Logging Technology by DUAN Hongzhen, DUAN Shengqiang, LIU Hui, WANG Peishang, HUANG Zhen, LI Huiguang

“…With the shift of oilfield exploration from conventional oil and gas to unconventional oil and gas such as tight oil and shale oil and gas, horizontal wells dominate the new drilling well types now. The improvement of drilling technology has led to thin and fragmented rock cuttings returning from the bottom of the well. …”
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Development technologies and models of different types of gas reservoirs in Ordos Basin, NW China by Ailin JIA, Dewei MENG, Guoting WANG, Guang JI, Zhi GUO, Naichao FENG, Ruohan LIU, Suqi HUANG, Shuai ZHENG, Tong XU

“…Four key directions of future research and technological breakthroughs are proposed: (1) Utilizing dual-porosity (fracture-matrix) modeling techniques in low-permeability carbonate reservoirs to delineate the volume and distribution of remaining gas in secondary pay zones, supporting well pattern optimization and production enhancement of existing wells. (2) Integrating well-log and seismic data to characterize reservoir spatial distribution of successive strata, enhancing drilling success rates in low-permeability sandstone reservoirs. (3) Utilizing the advantages of horizontal wells to penetrate effective reservoirs laterally, achieving meter-scale quantification of small-scale single sand bodies in tight gas reservoirs, and applying high-resolution 3D geological models to clarify the distribution of remaining gas and guide well placement optimization. (4) Further strengthening the evaluation of deep coal-rock gas in terms of resource potential, well type and pattern, reservoir stimulation, single-well performance, and economic viability.…”
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k0-PGNAA of pollutants in aqueous samples using MCNP code by A. Hamid, Hesham Shahbunder

“…A well-type HPGe detector as the main detector surrounded by NaI(Tl) guard detector has been arranged to investigate the performance of the Compton suppression spectrometer using the simplified slow circuit. …”
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Study on three-dimensional physical simulation experiment of remaining oil distribution in narrow channel reservoir by Kuiqian Ma, Jijun Wang, Shaohua Si, Lei Yang, Zhuo Zhao, Haochuan Ling, Zheng Wu

“…This research not only provides critical insights into the dynamics of water flooding in narrow channel reservoirs but also establishes a foundational methodology for evaluating the effectiveness of CO2 flooding following water flooding. …”
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Characterization of “sweet spots” and optimization of volume fracturing parameters in deep tight reservoirs of Subei Basin by TANG Jiandong, ZHANG Shunkang, LIN Shiwei, GE Zhengjun, LIN Bo

“…To optimize development strategies, well types, production methods, fracturing parameters, and well pattern designs were systematically refined to ensure stable production. …”
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Technology and understanding of post-fracturing coring in three-dimensional development zone of Fuling shale gas, Sichuan Basin, SW China by Huanquan SUN, Zhiyong LU, Li LIU, Jichao FANG, Aiwei ZHENG, Jiqing LI, Yuqiang ZHANG, Jialin XIAO

“…Six coring wells of different well types were systematically designed. Based on the integrated engineering technology of post-fracturing drilling, coring and monitoring of shale and the analysis of fracture source tracing, the evaluation of the fracture network after fracturing in the three-dimensional development of shale gas was conducted. …”
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