Results 31 to 40 of about 79 (60)

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

Application of five seismic attributes in natural fracture prediction for deep coalbed methane production along the eastern margin of the Ordos Basin

Meitian dizhi yu kantan
BackgroundNatural fractures serve as both the primary storage space for free gas of deep coalbed methane (CBM) and pathways for hydrocarbon migration. Furthermore, these fractures can enhance the porosity and permeability of strata under the deep, high ...
Jiangnan TONG, Feng WANG, Feng ZHANG, Wei HOU, Zhongbai LI, Liang JI, Yanan JIANG, Wei SUN   +7 more
doaj   +1 more source

Supersaturation effect and its characterization in gas-rich intervals of deep coal seams

Meitian dizhi yu kantan
Objective and MethodHigh free gas content serves as a key factor controlling the enrichment and high productivity of deep coalbed methane (CBM). However, its direct determination is challenging, making the accurate identification of free gas-rich coal ...
Lihong ZHOU, Yong LI, Rong DING, Yun LI, Yongzhou LI, Jintao KONG   +5 more
doaj   +1 more source

Analysis of Factors Influencing Tight Sandstone Gas Production and Identification of Favorable Gas Layers in the Shan 23 Sub-Member of the Daning-Jixian Block, Eastern Ordos Basin

Processes
The Daning-Jixian Block harbors abundant tight sandstone gas resources. However, significant variations in gas production exist among the different wells within the block. A comprehensive study was conducted on key factors such as sedimentary strata and petrophysical characteristics to elucidate their impact on gas reservoir productivity.
Junyi Sun, Ming Chen, Bo Wang, Gang Wang, Haonian Tian, Jie Hou, Boning Zhu   +6 more
openaire   +1 more source

Theoretical and technological system for Highly efficient development of deep coalbed methane in the Eastern edge of Erdos Basin

Meitan xuebao
Aiming at the development problems of deep coal reservoirs, such as deep burial, low permeability and complex stress field, this paper clarifies that the resource enrichment conditions, effective fracturing volume, effective horizontal section length ...
Fengyin XU, Zhihong NIE, Wei SUN, Xianyue XIONG, Borui XU, Lei ZHANG, Xiaosong SHI, Ying LIU, Shirui LIU, Zengping ZHAO, Yuan WANG, Hongxing HUANG, Haikun LIN   +12 more
doaj   +1 more source

Pore Structure and Heterogeneity Characteristics of Deep Coal Reservoirs: A Case Study of the Daning–Jixian Block on the Southeastern Margin of the Ordos Basin

Minerals
To clarify the micropore structure and fractal characteristics of the Danning–Jixian block on the eastern margin of the Ordos Basin, this study focuses on the deep coal rock of the Benxi Formation in that area. On the basis of an analysis of coal quality and physical properties, qualitative and quantitative studies of pore structures with different ...
Bo Li, Yanqin Guo, Xiao Hu, Tao Wang, Rong Wang, Xiaoming Chen, Wentian Fan, Ze Deng   +7 more
openaire   +1 more source

In Situ Stress Distribution of Deep Coals and Its Influence on Coalbed Methane Development in the Shizhuang Block, Qinshui Basin, China. [PDF]

ACS Omega, 2023
Zhang Y, Sun B, Deng Z, Chao W, Men X.
europepmc   +1 more source

Characterisation of the Full Pore Size Distribution of and Factors Influencing Deep Coal Reservoirs: A Case Study of the Benxi Formation in the Daning–Jixian Block at the Southeastern Margin of the Ordos Basin

Processes
The complex geological environment in deep layers results in differences in the pore and fracture structures and states of coalbed methane (CBM) occurrences between deep and shallow coal reservoirs. The coexistence of multiphase gases endows deep CBM with both “conventional” and “unconventional” geological attributes.
Xiaoming Chen, Tao Wang, Song Wu, Ze Deng, Julu Li, Zhicheng Ren, Daojun Huang, Wentian Fan, Gengen Zhu   +8 more
openaire   +1 more source

Low-Yield Genesis of Coalbed Methane Stripper Wells in China and Key Technologies for Increasing Gas Production. [PDF]

ACS Omega, 2022
Su X, Wang Q, Feng Y, Wang X, Ji C.
europepmc   +1 more source

Evaluation of potential helium source rocks and helium enrichment factors in coalbed methane in the eastern margin of Ordos basin. [PDF]

Sci Rep
Chen Y, Tao S, Kang R, Gao J, Yang Y, Fang X, Song W, Chen Y, Liu X.   +8 more
europepmc   +1 more source