Results 31 to 40 of about 30,413 (251)

Temporal monitoring of contamination in three sandy beaches from the 2019 oil spill near Cabo de Santo Agostinho, Northeastern Brazil [PDF]

Anais da Academia Brasileira de Ciências, 2022
In 2019, a massive oil spill impacted coastal ecosystems in eleven Brazilian states; these ecosystems were diverse with regard to their different geological settings (sandy beaches, rocky coasts, estuaries, tidal flats, mangroves, and reef systems) being
EDUARDO B. BONTEMPO FILHO, ROBERTO Q. COUTINHO, JOSÉ ANTONIO BARBOSA, ROBERTO L. BARCELLOS, HERALDO LUIZ GIACHETI, GERMANO MÁRIO S. RAMOS   +5 more
doaj   +1 more source

Study on Micro Production Mechanism of Corner Residual Oil after Polymer Flooding

, 2022
To study the microscopic production mechanism of corner residual oil after polymer flooding, microscopic visualization oil displacement technology and COMSOL finite element numerical simulation methods were used.
Mengqing Zhao, Chengwu Xu, Xiaoqi Fan, Yongsheng Zhang, Xianda Sun, Guoqiang Sang, Lihui Wang   +6 more
core   +1 more source

Development adjustment technology of extending life cycle for nearly-abandoned reservoirs [PDF]

Youqicang pingjia yu kaifa
Facing the challenges of extremely high water cut, developed preferential channels, highly dispersed remaining oil, and strong heterogeneity in nearly abandoned reservoirs, the study focuses on the 4-5 layer series of the North Block II（Oil Group No.
ZHANG Lianfeng, ZHANG Yilin, GUO Huanhuan, LI Hongsheng, LI Junjie, LIANG Limei, LI Wenjing, HU Shukui   +7 more
doaj   +2 more sources

Microscopic plugging adjustment mechanism in a novel heterogeneous combined flooding system

Energy Reports, 2022
In this study, novel pre-crosslinked gel particles were synthesized to form a new heterogeneous composite system with a weak alkaline-surfactant-polymer (ASP) system.
Lihui Wang, Siyuan Li, Ruibo Cao, Peihui Han, Wei Yan, Gang Sun, Huifen Xia, Tianhan Xu   +7 more
doaj   +1 more source

Comprehensive analysis of influencing factors and mechanism of nano emulsion spontaneous imbibition oil displacement in tight sandstone reservoir

Frontiers in Energy Research, 2023
Tight sandstone reservoir has the characteristics of low porosity, low permeability and strong reservoir heterogeneity, which leads to a rapid decline in single well production after hydraulic fracturing.
Zhuang Li
doaj   +1 more source

Numerical simulation of residual oil distribution characteristic of carbonate reservoir after water flooding

Frontiers in Earth Science
Carbonate reservoirs are characterized by abundant reserves and are currently focal points for development in oil and gas producing regions such as the Ahdab oilfield, Tarim Basin, Sichuan Basin, and Ordos Basin.
Haoxuan Tang, Chunsheng Jia, Hao Lu, Yunhui Deng, Baiyu Zhu   +4 more
doaj   +1 more source

Mechanisms of microscopic displacement during enhanced oil recovery in mixed-wet rocks revealed using direct numerical simulation [PDF]

, 2019
We demonstrate how to use numerical simulation models directly on micro-CT images to understand the impact of several enhanced oil recovery (EOR) methods on microscopic displacement efficiency. To describe the physics with high-fidelity, we calibrate the
Blunt, Martin J, Bijeljic, Branko, Akai, Takashi, Alhammadi, Amer M   +3 more
core   +1 more source

Study on Microscopic Distribution Law of Remaining Oil after Polymer Flooding based on Polymer Flooding Control Degree

IOP Conference Series: Earth and Environmental Science, 2021
Abstract There are many factors that affect the distribution of remaining oil after polymer flooding, and different geological conditions, production methods and production systems will affect the distribution characteristics of remaining oil.
openaire   +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

Research methods， distribution characteristics， and development trend of remaining oil in high water cut oilfields

Youqi dizhi yu caishoulu
To improve the research and evaluation effect of remaining oil in high water cut oilfields， this paper sorted out the concept and influencing factors of remaining oil， summarized the research methods and applicable conditions of remaining oil from three ...
WANG Jitao, LI Junjian
doaj   +1 more source