Results 21 to 30 of about 72 (66)

Reservoir Properties and Gas Potential of the Carboniferous Deep Coal Seam in the Yulin Area of Ordos Basin, North China

Energies
In comparison to shallow coal seams, deep coal seams exhibit characteristics of high temperature, pressure, and in-situ stress, leading to significant differences in reservoir properties that constrain the effective development of deep coalbed methane ...
Xianglong Fang, Feng Qiu, Longyong Shu, Zhonggang Huo, Zhentao Li, Yidong Cai   +5 more
doaj   +1 more source

Drainage system research and application of deep coalbed methane gas reservoirs in Daning-Jixian block

Meitan xuebao
Compared to Medium-shallow coalbed methane, deep coalbed methane exhibits significant differences in occurrence state, production mechanism, lifting technology, etc.As an important part of coalbed methane development, drainage directly impact the gas ...
Ming CHEN, Dameng WANG, Lizhu YU, Junyi SUN, Xin FENG, Kang ZHANG, Xianfeng GU, Liwei WANG, Zesong YIN, Huan ZHANG   +9 more
doaj   +1 more source

Multilayer Gas-Bearing System and Productivity Characteristics in Carboniferous–Permian Tight Sandstones: Taking the Daning–Jixian Block, Eastern Ordos Basin, as an Example

Energies
The Carboniferous–Permian strata in the Daning–Jixian Block, located on the eastern edge of the Ordos Basin, host multiple sets of tight gas reservoirs.
Ming Chen, Bo Wang, Haonian Tian, Junyi Sun, Lei Liu, Xing Liang, Benliang Chen, Baoshi Yu, Zhuo Zhang   +8 more
doaj   +1 more source

Economic evaluation and investment decision-making process of deep coalbed methane exploration and development projects

Meitan kexue jishu
Deep coalbed methane is a high-quality natural gas resource that has seen rapid exploration and development progress in recent years and holds an extremely promising future.
Youjin DAI, Fengyin XU, Feng WANG, Pengfei MA, Yun YANG, Jian YUN, Jie XU, Xiaoyi SUN, Shan CHENG, Yuxin LI   +9 more
doaj   +1 more source

Influence of deep coal pore and fracture structure on occurrence of coalbed methane: a case study of Daning-Jixian Block in eastern margin of Ordos Basin

Meitan kexue jishu
The pore-fracture structure of deep coal reservoir is of great significance to the evaluation and exploration of deep coalbed methane resource potential.
Ze DENG, Hongyan WANG, Zhenxue JIANG, Rong DING, Yongzhou LI, Tao WANG   +5 more
doaj   +1 more source

Fracturing interference behavior and mechanism of deep coalbed methane horizontal wells in the Daning-Jixian Block

Meitan kexue jishu
In order to accurately understand the effects of fracturing interference on deep CBM horizontal wells, 18 groups of fracturing interference events and their effects on 18 disturbed wells and 13 interfering wells in Daning-Jixian block were systematically
Haiyan CHAO, Ze LI, Huaibin ZHEN, Lele GUO, Hui ZHANG   +4 more
doaj   +1 more source

Characteristics and key technologies of multi-round fracturing transformation of deep coal in Daning-Jixian Block

Meitan xuebao
In the deep coalbed methane (CBM) development in Daning-Jixian block, the application of multi-stage fracturing has significantly increased the gas production and EUR (Estimated Ultimate Recovery) of vertical wells, achieving stable production along with
Chuanqing LIU, Xiaochen WEI, Kunsen BAI, Tong LIU, Weiping ZHU, Lixi LIANG, Huaibin ZHEN, Hanlin TANG   +7 more
doaj   +1 more source

Diagnosis, prevention, and control of liquid accumulation in horizontal wellbores for deep coalbed methane: A case study of the Daning-Jixian block along the eastern margin of the Ordos Basin

Meitian dizhi yu kantan
ObjectiveThe Daning-Jixian block on the eastern margin of the Ordos Basin has achieved large-scale production of deep coalbed methane (CBM), with nearly 150 horizontal wells having been put into production.
Wenting ZENG, Zhiming WANG, Lei ZHANG, Zhida TIAN, Huaibin ZHEN, Anna DAI, Quanshu ZENG, Tianyang SUI   +7 more
doaj   +1 more source

Development and Application of Dual-Tubing Jet Pump Full-Process Pressure-Maintained Drainage String in Deep Coal-Rock Gas Wells

Shiyou jixie
Deep coal-rock gas reservoir is sensitive to downhole pressure variation， and implementing kill operation may cause damage to gas production. Consequently， a full-process pressure-maintained operation technique of dual-tubing jet pump for deep coal-rock ...
Wu Jianjun, Wang Yubin, Ma Wentao, Liu Yinhua, Yin Decai, Ma Zhao, Yan Yongwei   +6 more
doaj   +3 more sources

Evaluation of development effectiveness of deep coalbed methane based on flowback characteristics-a case study of the Daning-Jixian block

Frontiers in Earth Science
The efficient development of deep coal-rock gas resources, exemplified by the pioneering No. 8 coal seam (buried >2000 m) in the Daning-Jixian Block, Ordos Basin, is of strategic importance.
Wei Sun, Wei Sun, Yanqing Feng, Yanqing Feng, Yuan Wang, Yuan Wang, Xiaofeng Chen, Quan Zhang, Junpeng Zou   +8 more
doaj   +1 more source