Results 21 to 30 of about 24,392 (174)

Geological characteristics and key technologies for exploration and development of the Yanchuannan coalbed methane field, Ordos Basin

Meitian dizhi yu kantan
ObjectiveChina boasts abundant coalbed methane (CBM) resources, which serve as a crucial replacement for the reserve growth and production addition of natural gas resources.
Xipeng HE, Cui XIAO, Yuqiao GAO, Xin LI, Tao GUO, Xiao CAI   +5 more
doaj   +1 more source

Genesis of Low CBM Production in Mid-Deep Reservoirs and Methods to Increase Regional Production: A Case Study in the Zhengzhuang Minefield, Qinshui Basin, China

ACS Omega, 2023
With the increase of the burial depth of the no. 3 coal seam in the Zhengzhuang minefield of Qinshui Basin, the production of surface coal bed methane (CBM) vertical wells was low. By means of theoretical analysis and numerical calculation, the causes of low production of CBM vertical wells were studied from the aspects of reservoir physical properties,
Changjiang Ji, Zhimin Song, Guofu Li, Haijin Hao, Kai Xin, Dingding Guo, Jianghua Zhang   +6 more
openaire   +2 more sources

Characteristics of low-rank coal reservoir and exploration potential in Junggar Basin: new frontier of low-rank CBM exploration in China

Journal of Petroleum Exploration and Production Technology, 2020
Low-rank coal reservoirs of Badaowan Formation and Xishanyao Formation are mainly developed in Junggar Basin. This paper discussed their features and coalbed methane (CBM) exploration potential based on geological survey, coal samples testing and ...
Yuanjiang Yu, Yonghua Wang
doaj   +1 more source

Anion vacancies as a source of persistent photoconductivity in II-VI and chalcopyrite semiconductors

, 2005
Using first-principles electronic structure calculations we identify the anion vacancies in II-VI and chalcopyrite Cu-III-VI2 semiconductors as a class of intrinsic defects that can exhibit metastable behavior.
A. Zunger, Alex Zunger, C. G. van de Walle, D. J. Chadi, D. J. Wolford, F. H. Leiter, I. Tanaka, J. M. Smith, S. Lany, Stephan Lany, W. E. Carlos   +10 more
core   +1 more source

Research on Deep Coalbed Methane Localized Spotting and Efficient Permeability Enhancement Technology

Applied Sciences, 2022
To solve the bottleneck problem of low deep coal seam permeability and difficult coalbed methane (CBM) mining. Combining hydraulic splitting technology and directional drilling technology, a directional hydraulic splitting enhancement method of deep CBM ...
Jiayong Zhang, Yongzhen Niu, Jian Chen, Yanlei Guo, Liwen Guo   +4 more
doaj   +1 more source

Progress and insights from worldwide deep coalbed methane exploration and development

Shiyou shiyan dizhi
Since 2021, China has achieved significant breakthroughs in deep coalbed methane (CBM) exploration and development, making it a strategic resource for increasing natural gas reserves and production. To further support the high-quality development of deep
Jiaqi ZHANG, Zengqin LIU, Baojian SHEN, Shihu ZHAO, Xinjun CHEN, Jincheng YE   +5 more
doaj   +1 more source

On the scientific exploitation of high-rank CBM resources

Natural Gas Industry B, 2020
After over 10 years' development of coalbed methane (CBM) industry in China, two industrial bases have been built, i.e., the Qinshui Basin and the Ordos Basin. However, the biggest problem that restricts the high-efficiency development of CBM industry in
Qingzhong Zhu, Yanhui Yang, Yinqing Zuo, Yang Song, Wei Guo, Feng Tang, Jie Ren, Gang Wang   +7 more
doaj   +1 more source

The Pion Cloud: Insights into Hadron Structure [PDF]

, 2007
Modern nuclear theory presents a fascinating study in contrasting approaches to the structure of hadrons and nuclei. Nowhere is this more apparent than in the treatment of the pion cloud.
Thomas, A. W.
core   +1 more source

Current status and development trends of deep coalbed methane research in China

Shiyou shiyan dizhi
Deep coalbed methane (CBM) possesses enormous resource potential and is essential for increasing unconventional natural gas reserves and production on a large scale in China.
Wei JU, Shu TAO, Zhaobiao YANG, Jiayao CHENG, Haiyan SHANG, Weike NING, Chunlong WU   +6 more
doaj   +1 more source

The primary controlling factors of the occurrence state of deep high-rank coalbed methane in eastern Ordos Basin

Frontiers in Earth Science
Introduction: This study investigates the key controlling factors of the occurrence state of deep coalbed methane (CBM). CBM is an abundant energy resource in China, particularly in deep coal seams.
Yujiang Shi, Yufei He, Jinbin Wan, Jianmeng Sun, Jingbo Zeng, Ruikang Cui   +5 more
doaj   +1 more source