Results 31 to 40 of about 109 (69)

Prediction of Influencing Factors on Estimated Ultimate Recovery of Deep Coalbed Methane: A Case Study of the Daning–Jixian Block

Processes
China has vast amounts of deep coalbed methane resources but is still in the early stage of deep coalbed methane development; thus, it lacks mature gas exploitation and development theories and technologies, particularly effective methods for evaluating final recoverable reserves.
Guohui Chen, Yanqing Feng, Shuangfang Lu   +2 more
exaly   +2 more sources

Characteristics of In Situ Stress and Reservoir Pressure in Deep Coal Seams and Their Influences on Reservoir Depletion: A Field Case Study

Geofluids, Volume 2023, Issue 1, 2023., 2023
The production of coalbed methane resources is greatly dependent on the reservoir depletion process. To improve the depressurization efficiency of deep coalbed methane (DCBM) reservoirs, the fluid production characteristics and implications of in situ stress and reservoir pressure for reservoir depletion in the eastern margin of the Ordos Basin are ...
Rui Li, Yiyu Lu, Binwei Xia, Wenwen Chen, Hansen Sun, Peng Tan   +5 more
wiley   +1 more source

Evaluation of the Accumulation Conditions and Favorable Areas of Shale Gas in the Upper Palaeozoic Marine‐Continental Transitional Facies in the Daning‐Jixian Area, Ordos Basin

Geofluids, Volume 2022, Issue 1, 2022., 2022
This study focuses on the organic‐rich mud shale in the Upper Palaeozoic transitional facies in the southeastern margin of the Ordos Basin. It systematically analyzes the shale gas accumulation conditions of the organic‐rich mud shale in the Lower Permian Shanxi‐Taiyuan Formation, including the thickness, distribution, organic matter type and content ...
Xu Zeng, Wei Wang, Qian Cao, Shangwen Zhou, Guodong Dong, Aiming Wang, Zhixin Chen, Hua Mei, Afshin Davarpanah   +8 more
wiley   +1 more source

Study on Downhole Throttling Characteristics of High Water Content Gas

Geofluids, Volume 2022, Issue 1, 2022., 2022
In order not to hinder gas production, we usually hope that the bottom hole effusion can be discharged to the surface with high‐pressure natural gas. For the production data of high water content gas wells, the problems of insufficient water content and liquid‐carrying capacity affecting gas well production should be considered.
Jie Zheng, Zhenzhen Li, Yihua Dou, Yarong Zhang, Cheng Bi, Xu Yang, Jiahui Li, Steffen Berg   +7 more
wiley   +1 more source

A Comparative Study of the Micropore Structure between the Transitional and Marine Shales in China

Geofluids, Volume 2021, Issue 1, 2021., 2021
To compare the micropore structure of marine‐continental transitional shale with marine shale, organic geochemical, field emission scanning electron microscopy, and low‐temperature nitrogen adsorption experiments were conducted on shale samples from the Shanxi Formation in the eastern Ordos Basin and the Longmaxi Formation in the southern Sichuan Basin.
Pengfei Jiao, Genshun Yao, Shangwen Zhou, Zhe Yu, Shiluo Wang, Zhiye Gao   +5 more
wiley   +1 more source

Characteristics Evolution of Multiscale Structures in Deep Coal under Liquid Nitrogen Freeze‐Thaw Cycles

Geofluids, Volume 2021, Issue 1, 2021., 2021
Liquid nitrogen freeze‐thaw fracturing has attracted more and more attention in improving the coal reservoir permeability. In order to reveal the impact of liquid nitrogen freeze‐thaw on the multiscale structure of deep coal, the multiscale structure evolution law of deep and shallow coal samples from the same seam in the Qinshui coalfield during the ...
Yingfeng Sun, Yixin Zhao, Yulin Li, Nima Noraei Danesh, Zetian Zhang, Yong liu   +5 more
wiley   +1 more source

Equipment configuration and process technology of hybrid oil-electric fracturing for deep coalbed methane [PDF]

Youqicang pingjia yu kaifa
In order to address the technical challenges in equipment configuration for hybrid oil-electric fracturing in deep coalbed methane reservoir modification, this study used the configuration of hybrid oil-electric fracturing equipment for deep coalbed ...
ZHAO Chongsheng, WANG Bo, GOU Bo, LUO Pengfei, CHEN Guojun, WU Guoquan
doaj   +3 more sources

Discussion on Transitional Shale Gas Accumulation Conditions from the Perspective of Source-Reservoir-Caprock Controlling Hydrocarbon: Examples from Permian Shanxi Formation and Taiyuan Formation in the Eastern Margin of Ordos Basin, NW China

Energies, 2023
Transitional shale gas, rich in resources, is expected to be a practical contributor to the increase in shale gas reserves and production in China. Its exploration prospect has been demonstrated by several wells in the Daning-Jixian block on the eastern ...
Qin Zhang, Wei Xiong, Xingtao Li, Congjun Feng, Zhen Qiu, Wen Liu, Xiang Li, Yufeng Xiao, Dan Liu, Haixing Yang   +9 more
doaj   +1 more source

Gray Relational Analysis Optimization for Coalbed Methane Blocks in Complex Conditions Based on a Best Worst and Entropy Method

Applied Sciences, 2019
The uncertainty and complexity of the geological parameters of coalbed methane (CBM) reservoirs may result in the assignment of atypical exact values to a whole block.
Guofei Zhao, Tianhe Kang, Junqing Guo, Runxu Zhang, Ligong Li   +4 more
doaj   +1 more source

Factors influencing productivity and production system optimization for deep coalbed methane in the Daning-Jixian block, Ordos Basin

Meitian dizhi yu kantan
ObjectiveDeep coalbed methane (CBM) reservoirs are characterized by ultra-low porosity, ultra-low permeability, and super saturation, rendering it impractical to copy the productivity models of shallow coalbed methane and shale gas.
Haifeng ZHAO, Zhaojie JIA, Mengqi CHEN, Ziyi YANG, Bin WANG, Hongliang LIN, Yanfeng YANG   +6 more
doaj   +1 more source