Results 51 to 60 of about 2,561 (262)

Reservoir Characteristics of Tight Sandstone and Sweet Spot Prediction of Dibei Gas Field in Eastern Kuqa Depression, Northwest China

Energies, 2022
Great progress has been made in the exploration of tight sandstone gas resources in Kuqa depression. Great progress has been made in Dibei structural belt, which proves the previously unproven favorable area for tight sandstone gas.
Guangjie Zhao, Xianqing Li, Mancang Liu, Caiyuan Dong, Daye Chen, Jizhen Zhang   +5 more
doaj   +1 more source

A new occurrence of tetrapod footprints from the Late Triassic of the Candelária Sequence, Brazil

The Anatomical Record, EarlyView.
Abstract The Hyperodapedon Assemblage Zone of the Candelária Sequence (Santa Maria Supersequence, Paraná Basin) preserves one of the most significant Late Triassic continental vertebrate assemblages in southern Brazil. Despite the relatively well‐documented body fossil record from this interval, ichnological records remain comparatively scarce.
Murilo Andrade‐Silva, Heitor Francischini   +1 more
wiley   +1 more source

Study of the numerical simulation of tight sandstone gas molecular diffusion based on digital core technology

Petroleum Science, 2018
Diffusion is an important mass transfer mode of tight sandstone gas. Since nano-pores are extensively developed in the interior of tight sandstone, a considerable body of research indicates that the type of diffusion is mainly molecular diffusion based ...
Hong-Lin Zhu, Shou-Feng Wang, Guo-Jun Yin, Qiao Chen, Feng-Lin Xu, Wei Peng, Yan-Hu Tan, Kuo Zhang   +7 more
doaj   +1 more source

Strategies for Greater Inclusion of Indigenous Students in College Science Programs

Biochemistry and Molecular Biology Education, EarlyView.
ABSTRACT The substantial underrepresentation of American Indian, Alaskan Native, and Native Hawaiʻian (AI/AN/NH) students in Science, Technology, Engineering and Mathematics (STEM) majors at United States colleges and universities results from systemic barriers in higher education.
Jonathan D. Baker, Nievita Bueno Watts, Devon S. Isaacs, Matthew D. Johnson, DenYelle B. Kenyon, Racheal Killgore, Catherine Peltier, Jesse L. Peltier, Sasheen Shailee C. Raymond, Alan H. Savitzky, Hugh E. Smeltekop, Amy E. Sprowles, Melissa Tehee, Jennifer Yazzie, Mary Jo Ondrechen   +14 more
wiley   +1 more source

Review and prospects of shear test of bolted rock joints

Deep Underground Science and Engineering, EarlyView.
The laboratory shear test equipment, test method, and numerical simulation of bolted rock joints were summarized. The shortcomings and limitations of the current research were analyzed, and the research prospects were proposed. Abstract Rock bolting is a critical approach in geotechnical engineering for supporting weak rocks.
Shulin Ren, Fan Yang, Manchao He, Yong Yuan, Zhigang Tao   +4 more
wiley   +1 more source

Shear behavior of bolt–grout interfaces under constant normal stiffness: Influence of grout strength and thickness

Deep Underground Science and Engineering, EarlyView.
The effects of grout strength and thickness on the shear behavior of bolt–grout interfaces (BGI) under constant normal stiffness conditions are investigated. Shear strength, failure modes, and acoustic emission characteristics are examined. The findings reveal that grout strength exerts a significantly greater influence on BGI shear strength and ...
Sunhao Zhang, Dongqi Shang, Yujing Jiang, Jinge Zhang, Hongbin Chen, Tianqi Jiang   +5 more
wiley   +1 more source

Differences in formation process of tight sandstone gas reservoirs in different substructures in Changling Fault Depression, Songliao Basin, NE China

Petroleum Exploration and Development, 2017
The tight sands reservoirs in the Lower Cretaceous Denglouku Formation in Changling Fault Depression of Songliao Basin, NE China were taken as study object.
Mingjie LIU, Zhen LIU, Yaowen WU, Wenqi ZHU, Peng WANG   +4 more
doaj   +1 more source

Generalized Matsuoka–Nakai criterion considering hydrostatic pressure dependence in the brittle–ductile region

Deep Underground Science and Engineering, EarlyView.
Three sets of strength data were selected, including hydrostatic pressure independent within the brittle region (HPI‐B), hydrostatic pressure dependent within the brittle region (HPD‐B), and hydrostatic pressure dependent within the brittle–ductile region (HPD‐BD). For HPI type, the failure envelope within the deviatoric plane remains constant.
Jiacun Liu, Junjie Xiao, Dongping Liu, Ying Xu   +3 more
wiley   +1 more source

Slip versus dilation tendency parameter space as a tool for prospecting structurally controlled geothermal systems in greenfield: insights from the greater Ruhr region

Deep Underground Science and Engineering, EarlyView.
This study highlights that with the static and time‐dependent evolution of slip versus dilation tendency parameter space, structurally controlled deep geothermal systems can be selected within areas of higher permeability and lower seismic hazard. Abstract Faults play a vital role in the Earth's hydraulic system by facilitating fluid flow when dilating
Michal Kruszewski, Alessandro Verdecchia, Oliver Heidbach, Rebecca M. Harrington, David Healy   +4 more
wiley   +1 more source

Binary pore structure and fractal characteristics of tight sandstone： A case study of Chang 7 Member of Triassic Yanchang Formation in Ordos Basin

Youqi dizhi yu caishoulu
The pore structure characteristics of tight sandstone are of significance for the exploration and development of tight oil reservoirs. However， little attention is paid to the flow characteristics and influencing factors of different types of pores. This
WU Xiaobin, DU Zhiwen, QIANG Xiaolong, LEI Tian, JIANG Tingting, WANG Wei, ZHU Yushuang   +6 more
doaj   +1 more source