Results 31 to 40 of about 1,009,618 (111)

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

Reservoir forming characteristics and favorable area evaluation of deep coalbed methane in Daning-Jixian Block

, 2022
The No.8 coal with a buried depth of more than 2 000 m of Lower Permian Taiyuan Formation in Daning-Jixian block, eastern margin of Ordos Basin is the first deep CBM field with an output of 100 billion m3 in China, but the reservoir forming ...
Fengyin, XU, Chengwang, WANG, Shuguang, LI, Zhidong, GUO, Xinwei, LIU, Yubin, WANG, Hongna, WANG   +6 more
core   +1 more source

Acid fracturing technology of deep CBM wells and its field test in Daning-Jixian Block

, 2022
There are abundant deep coalbed methane resources in China, but the coupling problem of coal reservoir reconstruction technology and deep geological quality conditions needs to be solved urgently.
Shuai, CHEN, Huaibin, ZHEN, Chengwang, WANG, Haifeng, ZHAO, Changsong, LIU   +4 more
core   +1 more source

Exploration of integrated technology for deep coalbed methane drainage in full life cycle: A case study of Daning‒Jixian Block

, 2022
The first deep coalbed methane (CBM) field with a depth of more than 2 000 meters in China has been proven in Daning‒Jixian Block on the eastern margin of Ordos Basin, where the deep coal bed has the characteristics of large buried depth, high pressure ...
Yinhua, LIU, Kang, ZHANG, Qian, WANG, Wenting, ZENG, Tengze, GE, Lizhu, YU, Bin, PANG   +6 more
core   +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

Price impact of block trades in the Saudi stock market [PDF]

, 2010
This paper examines the price impact of block trades for the 124 companies that comprise all listed firms in the Saudi stock market (SSM). We use high frequency intraday data (one minute intervals) for the period 2005-2008 to provide out of sample ...
Kyriacou, K, Hudson, R, Gregoriou, A, Alzahranai, AA   +3 more
core   +6 more sources

Production characteristics of deep coalbed methane gas reservoirs in Daning-Jixian Block and its development technology countermeasures

, 2022
The Ordos Basin is rich in deep coalbed methane resources with a depth of more than 2 000 m, which is an important coalbed methane exploration and development area.
Zhihong, NIE, Xia, YAN, Wei, SUN, Hongxing, HUANG, Ying, LIU, Yanqing, FENG, Xiaosong, SHI   +6 more
core  

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

Influencing factors on gas production effect of acid fractured CBM Wells in deep coal seam of Daning-Jixian Block

, 2022
The No.8 deep coal seam in Daning-Jixian Block is large, thick, widely distributed, and rich in coalbed methane(CBM) resources. After volume acid fracturing, a breakthrough has been achieved in the producing test. However, the productivity of the testing
Huaibin, ZHEN, Chengwang, WANG, Shuguang, LI, Borui, XU, Pu, YUAN, Hongna, WANG   +5 more
core  

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