Results 31 to 40 of about 9,444 (222)

Origin of the dolomite in the Buqu Formation (Mid-Jurassic) in the south depression of the Qiangtang Basin, Tibet: Evidence from petrographic and geochemical constraints

Frontiers in Earth Science, 2022
The Qiangtang Mesozoic sedimentary basin is a new field of hydrocarbon exploration, in which the Buqu Formation dolostone reservoirs have attracted increasing attention in recent years.
Youli Wan, Youli Wan, Jiashan Lin, Jiashan Lin, Zhan Zhao, Zhan Zhao, Zhonglin Wang, Zhonglin Wang   +7 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

Microstructure analysis and mechanical parameter estimation of sanding dolomite

Frontiers in Earth Science
Sanding dolomite strata are widely distributed in southwest China. The safety of the water diversion tunnel in Yuxi section of the Central Yunnan water diversion Project has been seriously threatened by the geological disasters such as the reduction of ...
Fengnian Wang, Fengnian Wang, Fengnian Wang, Fengnian Wang, Zewei Li, Zewei Li, Yongxiang Shi, Yongxiang Shi, Xiaowen Gong, Yanjie Zhang   +9 more
doaj   +1 more source

A rock brittleness index based on the postpeak energy release rate and damage surface characteristics for brittle hard rock

Deep Underground Science and Engineering, EarlyView.
This study examines energy evolution in rock rupture via triaxial direct shear tests, exploring the impact of confining pressure and temperature on fracture surface randomness. A novel energy‐based brittleness index is proposed, validated experimentally, and compared with existing methods for reliability and accuracy.
Biao Wang, Zaobao Liu, Jing Xue, Bo Lu, Wei Zeng, Dengke Zhang   +5 more
wiley   +1 more source

Hydrothermal dolomite reservoir facies in the Sinian Dengying Fm, central Sichuan Basin

Natural Gas Industry B, 2017
The Upper Sinian Dengying Fm is the focus of natural gas exploration in the central part of the Sichuan Basin (central Sichuan Basin) in recent years.
Yuqiang Jiang, Yifan Gu, Xun Zhu, Wei Xu, Yao Xiao, Junliang Li   +5 more
doaj   +1 more source

Study on Reverse Flotation Process of Magnesite and Dolomite in Dodecylamine System

Kuangchan zonghe liyong, 2022
Through the single mineral flotation test, the flotation behavior of magnesite and dolomite in the dodecylamine flotation system and the influence of the regulator Fe3+ on the floatability of the two minerals were studied.
Xiaoqi Ban, Pan Gu, Wanzhong Yin, Jin Yao, Dongrui Chi, Wanzhong Guo   +5 more
doaj   +1 more source

Numerical and experimental study on P‐wave propagation across a rock joint with different orientations

Deep Underground Science and Engineering, EarlyView.
Joint orientation significantly affects P‐wave velocity, with the highest velocity at zero‐degree angles, decreasing to 30° as the angle increases. The velocity increases slightly from 30 to 45 degrees but sharply decreases from 45 to 90 degrees. Abstract Determination of the required parameters in different science contexts using the ultrasonic wave ...
Yaghoob Zarei, Mojtaba D. fallahi, Ali Uromeihy, Mohammad R. Nikoodel, Mohammad Fathollahy   +4 more
wiley   +1 more source

Research progress and current status of dynamic wave propagation characteristics in rock mass: A review

Deep Underground Science and Engineering, EarlyView.
This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu, Tao Li, Ruiqi Yuan, Yue Li, Bingni Wu, Bo Liu, Zhengding Deng, Galindo Rubén, Fausto Molina‐Gómez   +8 more
wiley   +1 more source

The origin of heterogeneous sucrosic dolomite reservoir of the lower Permian Qixia Formation, NW Sichuan Basin, China

Energy Exploration & Exploitation, 2023
Sucrosic dolomite, an important hydrocarbon reservoir, has long been the focus of carbonate sedimentological and reservoir geological studies. This study investigated a kind of heterogeneous sucrosic dolomite in the Lower Permian Qixia Formation of NW ...
Nan Jiang, Xingzhi Wang, Dong Xiao, Ran Liu, Wei Wang, Like Zhao, Xiaofang Wang   +6 more
doaj   +1 more source

Dolomite catalyst for fast pyrolysis of waste cooking oil into hydrocarbon fuel

South African Journal of Chemical Engineering, 2023
Dolomite as the catalyst for pyrolysis of waste cooking oil (WCO) was investigated to produce hydrocarbon fuels. Optimization of pyrolysis parameters i.e.
Yorinda Buyang, Reva Edra Nugraha, Holilah Holilah, Hasliza Bahruji, Suprapto Suprapto, Aishah Abdul Jalil, Muryani Muryani, Didik Prasetyoko   +7 more
doaj   +1 more source