Results 51 to 60 of about 62,857 (347)

Modeling fluctuating pressure in the eccentric annulus with a four-parameter rheological method

Energy Reports, 2022
The existing calculation models of fluctuating pressure are mainly based on Bingham fluid, power-law fluid and Heba fluid. These rheological models have certain limitations in the scope of application, and it is difficult to accurately describe the ...
Zhikun Liu, Chenglu Liu, Wei Zhang, Yong Wang, Jie Cao   +4 more
doaj   +1 more source

Nanopore Confinement Effect on the Phase Behavior of CO2/Hydrocarbons in Tight Oil Reservoirs considering Capillary Pressure, Fluid-Wall Interaction, and Molecule Adsorption

Geofluids, 2021
The pore sizes in tight reservoirs are nanopores, where the phase behavior deviates significantly from that of bulk fluids in conventional reservoirs.
Zhixue Zheng, Y. Di, Yushu Wu
semanticscholar   +1 more source

Occurrence characteristics and relation to oil and gas distribution of bedding fractures in tight sandstone

, 2022
The existence of bedding fractures has a very important influence on the formation and distribution of tight sandstone oil and gas reservoirs. In this paper, the occurrence characteristics of bedding fractures and their influence on oil and gas ...
Wang, Weili, Hui, Xiao, Zhao, Jing, Zhao, Yande, Guo, Ruiliang, Wang, Weibin   +5 more
core   +1 more source

Classification of microscopic pore-throats and the grading evaluation on shale oil reservoirs

Petroleum Exploration and Development, 2018
: On the basis of the characterization of microscopic pore-throats in shale oil reservoirs by high-pressure mercury intrusion technique, a grading evaluation standard of shale oil reservoirs and a lower limit for reservoir formation were established ...
Shuangfang LU, Junqian LI, Pengfei ZHANG, Haitao XUE, Guoli WANG, Jun ZHANG, Huimin LIU, Zheng LI   +7 more
doaj   +1 more source

A novel approach of tight oil reservoirs stimulation based on fracture controlling optimization and design

Petroleum Exploration and Development, 2020
: To deal with the stress interference caused by simultaneous propagation of multiple fractures and the wettability reversal and physical property changes of the reservoir caused by fracturing fluid getting in during large-volume fracturing of tight oil ...
Qun LEI, Dingwei WENG, Baoshan GUAN, Lijun MU, Yun XU, Zhen WANG, Ying GUO, Shuai LI   +7 more
doaj   +1 more source

Microscale Mineral and Pore Structure Characterization of the Low-Permeability Sandstone in the Ordos Basin, China

Advances in Civil Engineering, 2021
Given the insufficient understanding of the characteristics and controlling factors of the low-permeability sandstone reservoir in the Heshui area, the Ordos Basin, the present study examined the microscale mineral and pore structure of Chang 2 reservoir.
Jie Gao, Zhen Sun, Jianping Liu, Chenyang Zhao, Dazhong Ren, Rongjun Zhang, Tingting Li, Dengke Liu   +7 more
doaj   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Valosin‐containing protein counteracts ATP‐driven dissolution of FUS condensates through its ATPase activity in vitro

FEBS Letters, EarlyView.
Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura, Shin‐ichi Tate, Kyota Yasuda   +2 more
wiley   +1 more source

Quantitative assessment of the sweet spot in marine shale oil and gas based on geology, engineering, and economics: A case study from the Eagle Ford Shale, USA

Energy Strategy Reviews, 2021
Shale oil and gas have become important areas of petroleum exploration and development. Successful shale oil and gas exploration depends on the accurate evaluation of sweet spots, which are the commercial targets.
Lianhua Hou, Caineng Zou, Zhichao Yu, Xia Luo, Songtao Wu, Zhongying Zhao, Senhu Lin, Zhi Yang, Lijun Zhang, Dingwei Wen, Jingwei Cui   +10 more
doaj   +1 more source

Residual tail twisting in ascidian larvae is stabilized by asymmetric myofibrils that resist bilateral symmetry restoration

FEBS Letters, EarlyView.
Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure, Misaki K. Nishio, Satoru Okuda, Kohji Hotta   +3 more
wiley   +1 more source