Results 41 to 50 of about 18,417 (201)

Control factors and risk prediction of casing deformation in deep shale gas wells in southern Sichuan Basin

Unconventional Resources
Casing deformation seriously affects the fracturing progress and stimulation effect of shale gas reservoirs. Considering casing deformations in fractured deep shale gas wells in the Luzhou block of southern Sichuan Basin, the influences of micro ...
Cheng Shen, Bo Zeng, Sha Liu, Yingjie Xu, Zhiguang Yao   +4 more
doaj   +1 more source

A study of the mechanism of nonuniform production rate in shale gas based on nonradioactive gas tracer technology

Energy Science & Engineering, 2020
The performance of horizontal wells in shale gas is controlled by multiple factors, and there is a difference in gas production rate between different fracturing stages. However, the mechanism of the nonuniform gas production rate is still not clear.
Shan Huang, Wuguang Li, Jianfa Wu, Haijie Zhang, Yuanping Luo   +4 more
doaj   +1 more source

Black shale deposition during the Early Jurassic: Geochemistry of Pliensbachian and Toarcian sedimentary rocks of the Hunzen Well, Hils Syncline, Northwest German Basin

The Depositional Record, EarlyView.
Our research uses a multidisciplinary approach, including organic and inorganic geochemistry, biostratigraphy, carbon isotope geochemistry and organic petrography to reconstruct depositional conditions and organic matter accumulation during the Pliensbachian and Toarcian.
Premila Wijesinghe, Ralf Littke, Linda Burnaz, Martin Blumenberg, Jochen Erbacher, Thomas Mann, Florian Amann, Thorsten Bauersachs   +7 more
wiley   +1 more source

The timing of the initial collision between the South and North China blocks constraining from the sediments in the eastern Sichuan Basin

Scientific Reports, 2023
In this study, detrital zircon U–Pb geochronology, trace element and Hf isotopic compositional data from the Early-Middle Triassic clastic rocks in the eastern Sichuan Basin were obtained to distinguish the sediment provenance and constrain the timing of
Tianjia Liu, Zongquan Hu, Dianwei Zhang, Shuangjian Li, Chuanjie Cheng, Lingfang Zhou, Guanping Wang, Xunlian Wang, Zhentao Wang   +8 more
doaj   +1 more source

Hotspots, trends, and regional focus on oil or gas exploration: A bibliometric comparative study

Deep Underground Science and Engineering, EarlyView.
This paper explores the research trends in global oil and gas exploration through the bibliometric analysis of 3460 articles collected from the Web of Science database on oil and gas exploration published from 2013 to 2023. The research hotspots, objects, regional distribution, methods, and evaluation methods of oil and gas exploration are analyzed and
Jihong Wang, Zhongkai Li, Jianguo Wang, Zhiqiang Li   +3 more
wiley   +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

Finite-Horizon Variance-Constrained Estimation for Complex Networks Subject to Dynamical Bias Using Binary Encoding Schemes

IEEE Access, 2023
In this article, a variance-constrained $H_{\infty }$ state estimation issue is dealt with for a type of nonlinear time-varying complex networks affected by dynamical bias under binary encoding schemes (BESs).
Weijian Li, Nan Hou, Fan Yang, Xianye Bu, Ligang Sun   +4 more
doaj   +1 more source

Microscopic time‐dependent mechanical behavior of shale derived from nanoindentation

Deep Underground Science and Engineering, EarlyView.
This study conducted grid nanoindentation creep tests to systematically analyze the microscopic creep behaviors of shale. Based on the analysis of creep strain rate sensitivity, the primary mechanism of microscopic creep in shale was found to be the extension and closure of microcracks.
Cunbao Li, Shilei Zhong, Heping Xie, Changtai Zhou, Jianjun Hu   +4 more
wiley   +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

Intelligent prediction and integral analysis of shale oil and gas sweet spots

Petroleum Science, 2018
Shale reservoirs are characterized by low porosity and strong anisotropy. Conventional geophysical methods are far from perfect when it comes to the prediction of shale sweet spot locations, and even less reliable when attempting to delineate ...
Ke-Ran Qian, Zhi-Liang He, Xi-Wu Liu, Ye-Quan Chen   +3 more
doaj   +1 more source