Results 51 to 60 of about 1,592,953 (242)

Influence of a Paleosedimentary Environment on Shale Oil Enrichment: A Case Study on the Shahejie Formation of Raoyang Sag, Bohai Bay Basin, China

Frontiers in Earth Science, 2021
The characteristics of paleosedimentary environments are of great significance for the enrichment of organic matter (OM) and hydrocarbons in lacustrine shale.
Yongbo Wei, Xiaoyan Li, Ruifeng Zhang, Xiaodong Li, Shuangfang Lu, Y. Qiu, Tao Jiang, Yuan Gao, Tiedong Zhao, Zhaojing Song, M. Zhao   +10 more
semanticscholar   +1 more source

Experimental Investigation on the Characteristic Mobilization and Remaining Oil Distribution under CO2 Huff-n-Puff of Chang 7 Continental Shale Oil

Energies, 2021
The Chang 7 continental shale oil reservoir is tight. The recovery factor is extremely low, the remaining oil is very high, and injecting water to improve oil recovery effectiveness is too hard.
Jianhong Zhu, Junbin Chen, Xiaoming Wang, Li Fan, Xiangrong Nie   +4 more
semanticscholar   +1 more source

The role of water bridge on gas adsorption and transportation mechanisms in organic shale

Scientific Reports
This work introduces and discusses the impacts of the water bridge on gas adsorption and diffusion behaviors in a shale gas-bearing formation. The density distribution of the water bridge has been analyzed in micropores and meso-slit by molecular ...
Binhui Li, Yong Liu, Yubo Lan, Jiawei Li, Yue Lang, Sheikh S. Rahman   +5 more
doaj   +1 more source

Experimental study on initiation and propagation of hydraulic fractures in stratified shale oil reservoirs

Journal of Petroleum Exploration and Production Technology
The bedding planes of the Gulong shale oil reservoir in Daqing, China are extremely developed, which causes the hydraulic fractures to extend excessively in the horizontal direction while their longitudinal propagation is limited. In order to improve the
Hao Qin, Wuhao Guo, Haibo Zhao, Yintong Guo, Chuangang Xiang, Jianliang Zhang, Shujun Yin, Weilin Yan, Chuang Li, Yongguang Liang, Huabing Zhang, Xinao Zhang   +11 more
doaj   +1 more source

Lithofacies types, reservoir characteristics and silica origin of marine shales: A case study of the Wufeng formation–Longmaxi Formation in the Luzhou area, southern Sichuan Basin

Natural Gas Industry B, 2022
Shale, which is a fine-grained sedimentary rock, differs in reservoir quality (RQ) and completion quality (CQ) as the result of variations in its mineral and organic-matter compositions. The RQ and CQ directly affect shale gas exploitation.
Shuyan Wang, Ling Man, Shiqian Wang, Lei Wu, Yiqing Zhu, Yi Li, Yifan He   +6 more
doaj  

N2 influences on CH4 accumulation and displacement in shale by molecular dynamics

Scientific Reports
N2 is generally employed as a displacement agent to enhance gas recovery in shale gas-bearing reservoirs. However, the primary displacement mechanism in the subsurface still needs to be clarified due to the characteristics of shale reservoirs with low ...
Jiawei Li, Yue Lang, Binhui Li, Yong Liu, Zhejun Pan, Sheikh S. Rahman   +5 more
doaj   +1 more source

Development characteristics of natural fractures in horizontal wells for deep shale gas and their implications for enhanced development: a case study of Wufeng-Longmaxi formations in Luzhou area, southern Sichuan Basin

Shiyou shiyan dizhi
The analysis of natural fracture development characteristics is crucial for evaluating deep shale gas exploration and development. It provides valuable insights for assessing reservoir quality comprehensively and designing fracturing strategies ...
Xuefeng YANG, Ziqiang XIA, Shengxian ZHAO, Yuanhan HE, Ruiqi GAO, Lieyan CAO   +5 more
doaj   +1 more source

Construction of a novel brittleness index equation and analysis of anisotropic brittleness characteristics for unconventional shale formations

Petroleum Science, 2019
The brittleness prediction of shale formations is of interest to researchers nowadays. Conventional methods of brittleness prediction are usually based on isotropic models while shale is anisotropic.
Ke-Ran Qian, Tao Liu, Jun-Zhou Liu, Xi-Wu Liu, Zhi-Liang He, Da-Jian Jiang   +5 more
doaj   +1 more source

Research progress of microscopic percolation mechanism of shale oil

Shiyou shiyan dizhi
Shale oil has become the focus of the exploration and development of unconventional oil and gas resources in the world, but its development faces many challenges. Aiming at the complex pore space, the unclear percolation mechanism, and the urgent need to
Mingchuan WANG, Ran WANG, Hui YUE, Wei ZHANG, Fuyong WANG, Zhiqiang CHEN   +5 more
doaj   +1 more source

On bitumens, oil shales, and oil coals [PDF]

Transactions of the Edinburgh Geological Society, 1873
Mr Taylor stated, that of late years we had gained some knowledge on the general subject of what coals and shales were. We were not now in the position we were in fifteen or twenty years ago, when fourteen scientific witnesses went before a very venerable court and said that a certain substance was Coal, while as many on the other side said it was not.
openaire   +3 more sources