Results 1 to 10 of about 2,696,871 (167)

Study on pyrolysis characteristics of oil-rich coal under in-situ conditions and industrial-scale extraction simulation

Frontiers in Earth Science
IntroductionIn-situ pyrolysis technology for oil-rich coal represents a low-carbon resource development strategy characterized by ‘hydrogen extraction and carbon retention,’ holding significant importance for advancing the efficient exploitation of coal ...
Xiao Li, Xiao Li, Ying Tang, Ying Tang, Youwu Li, Youwu Li, Fan Yang, Fan Yang, Xiaodan Wu, Xiaodan Wu, Jingyao Sun, Jingyao Sun, Jingyun Cui, Jingyun Cui, Qing Zhang, Qing Zhang, Siqi Yuan, Siqi Yuan, ZhiQin Kang   +18 more
doaj   +4 more sources

Study on initial fracture distribution and bearing damage evolution mechanism of disturbed coal samples in oil-rich coal deposits in western China

Frontiers in Materials
The simultaneous formation of stress transfer and structural optimization in deep underground engineering strongly influences the occurrence and severity of dynamic disasters, especially under complex stress–structure conditions.
Yawu Shao, Yawu Shao, Yawu Shao, Yawu Shao, Lei Zhu, Lei Zhu, Lei Zhu, Chang Xin, Gang Han, Gang Han, Gang Han, Haifei Lin, Hu Liu, Hu Liu, Hu Liu, Jiahao Xie, Jiahao Xie, Jiahao Xie, Jiahao Xie, Mingming Sun, Mingming Sun, Mingming Sun, Jin Wang, Jin Wang, Jin Wang   +24 more
doaj   +4 more sources

Coal facies characteristics and pore structure response of oil-rich coal in Yushenfu Mining Area

Meikuang Anquan, 2021
To study the influence of coal-forming environment on the pore structure of coal samples, we take the oil-rich coals from Ningtiaota and Zhangjiamao coal mines in Yushenfu Mining Area as the research object, carry out quantitative analysis of microcoal ...
SHEN Yanjun, WANG Xu, SHI Qingmin, GUO Chen, LEI Fangchao, KOU Bingyang, MA Wen   +6 more
doaj   +2 more sources

Distribution and controlled geological factors of oil-rich coal in shaanxi province

Meitan kexue jishu, 2023
The green, clean and efficient utilization of coal is an important way for the sustainable development of coal industry. Shaanxi province is rich in coal resources, which are mainly distributed in the five coal fields in the north of Shaanxi province ...
YANG Fu, DUAN Zhonghui, MA Li, FU Deliang, TIAN Tao, HE Dan, YUE Mingjuan   +6 more
doaj   +2 more sources

Potential Analysis and Technical Conception of Exploitation and Utilization of Tar-Rich Coal in Western China

中国工程科学, 2022
The resources of tar-rich coal in Western China are abundant and are available for large-scale development. Understanding the oil and gas resource properties of tar-rich coal and promoting the development and transformation of tar-rich coal to produce ...
Wang Shuangming, Zheng Dezhi , Jiao Xiaomiao   +2 more
doaj   +3 more sources

Numerical Investigation of the Heat and Mass Transfer during the In Situ Pyrolysis Process of Oil-Rich Coal

Processes, 2023
A multi-physics numerical method coupling fluid flow, heat transfer, and a chemical reaction was used to determine the temperature distribution and the conversion rate of a coal seam during underground pyrolysis. The coal seam was fractured to enhance the heat and mass transfer. The influences of the pyrolysis pressure on the heat transfer, oil and gas
Jinjia Wei, Mingjie Li, Zhonghui Duan
exaly   +2 more sources

Structural Characteristics and Direct Liquefaction Performance of Macerals in Yili Coal from Xinjiang [PDF]

Molecules
Effectively separating and utilizing macerals based on their properties is crucial for the efficient and high-value utilization of coal. This study enhances the traditional screening method by employing primary and stepwise crushing techniques to ...
Yongpan Wang, Xiaohui Li, Lang Liu, Xiaodong Zhou, Ting Liu, Guangjun Li, Jingxian Han, Yourlani Abudurgman   +7 more
doaj   +2 more sources

Hydrothermal preparation of coal gangue-derived heterogeneous structures for selective adsorption enhanced photocatalytic removal of Cr(VI) ions in tar-rich coal mine water [PDF]

Scientific Reports
As the acidity increases, certain heavy metal ions in mine water, such as Cr(VI) ions, transition from insoluble compounds to soluble states, increasing their toxicity. Therefore, how to efficiently remove Cr(VI) ions under acidic conditions is an urgent
Xining Ren, Maoye Xu, Liang Ma, Xing Yan, Yandong Zhang, Taojie Dai, Jun Xu   +6 more
doaj   +2 more sources

Geological Evaluation of In-Situ Pyrolysis Development of Oil-Rich Coal in Tiaohu Mining Area, Santanghu Basin, Xinjiang, China

Energies
The applicability of the in-situ pyrolysis of oil-rich coal is highly dependent on regional geological conditions. In this study, six major geological factors and 19 key parameters influencing the in-situ pyrolysis of oil-rich coal were systematically ...
Guangxiu Jing, Xiangquan Gao, Shuo Feng, Xin Li, Wenfeng Wang, Tianyin Zhang, Chenchen Li   +6 more
doaj   +2 more sources

A Multi-Component and Multi-Functional Synergistic System for Efficient Viscosity Reduction of Extra-Heavy Oil [PDF]

Molecules
The extra-heavy oil in the Tahe Oilfield of China has extremely high viscosity, as it is rich in the heavy components asphaltene and resin, creating significant difficulties in its exploitation and transportation.
Zuguo Yang, Yanxia Liu, Jing Jiang, Lijuan Pan, Dandi Wei, Xingen Feng, Long He, Jixiang Guo, Yagang Zhang   +8 more
doaj   +2 more sources