Results 31 to 40 of about 3,292 (229)

In-situ hydrocarbon formation and accumulation mechanisms of micro- and nano-scale pore-fracture in Gulong shale, Songliao Basin, NE China

Petroleum Exploration and Development, 2023
By conducting experimental analyses, including thermal pyrolysis, micro-/nano-CT, argon-ion polishing field emission scanning electron microscopy (FE-SEM), confocal laser scanning microscopy (CLSM), and two-dimensional nuclear magnetic resonance (2D NMR),
Xiaojun WANG, Baowen CUI, Zihui FENG, Hongmei SHAO, Qiuli HUO, Bin ZHANG, Bo GAO, Huasen ZENG   +7 more
doaj   +1 more source

Combination of alkali–surfactant–polymer​ flooding and horizontal wells to maximize the oil recovery for high water cut oil reservoir

Energy Reports, 2021
Alkali/surfactant/polymer (ASP) combines the advantages of each of the chemical in the blend. ASP has shown to be an effective and practical method to enhance oil recovery.
Jianguang Wei, Jiangtao Li, Xuedong Shi, Runnan Zhou   +3 more
doaj   +1 more source

Study on Wax Deposition Law in Daqing Gulong Shale Oil [PDF]

E3S Web of Conferences
Daqing Gulong shale oil exhibits elevated wax content, a high wax precipitation point, and a high freezing point. However, its oil density and viscosity are relatively low, making it susceptible to wax crystal precipitation. The risk of pipeline clogging
Zhao Xuefeng, Wang Yunchen, Zhao Zhongshan, Leng Dongmei, Liu Qin, Li Jionghao   +5 more
doaj   +1 more source

Propagation Law of Hydraulic Fractures in Continental Shale Reservoirs with Sandstone–Shale Interaction

Processes
There are significant lithological and stress differences between continental shale layers, posing challenges for hydraulic fractures (HFs) to propagate through the formations, leading to weak fracture effects. To address this, this article adopts the finite element and cohesive force element methods to formulate a three-dimensional numerical model for
Yuan Gao, Qiuping Qin, Xiaobing Bian, Xiaoyang Wang, Wenjun Xu, Yanxin Zhao   +5 more
openaire   +1 more source

Water imbibition of shale and its potential influence on shale gas recovery—a comparative study of marine and continental shale formations [PDF]

Journal of Natural Gas Science and Engineering, 2016
Abstract A large volume of fracturing fluid is pumped into a well to stimulate shale formation. The water is imbibed into the reservoir during this procedure. The effect of the imbibed water on gas recovery is still in debate. In this work, we study the spontaneous imbibition of water into marine shale samples from the Sichuan Basin and continental ...
Yinghao Shen, Hongkui Ge, Caoxiong Li, Xinyu Yang, Kai Ren, Zhihui Yang, Shuai Su   +6 more
openaire   +1 more source

Characterization of Residual Oil Distribution in Sandstone by NMR: A Microscopic View on Oil Recovery by Miscible CO2 Flooding

Lithosphere, 2022
Miscible CO2 flooding gains rising popularity due to high displacement efficiency and potential carbon negativity. It is well documented that pore-level heterogeneity is one of the dominant mechanisms responsible for the variation in oil recovery ...
Anlun Wang, Xiaoqing Zhao, Jianguang Wei, Lisha Zhao, Guangliang An, Xiaofeng Zhou, Jiangtao Li, Xuedong Shi, Ying Yang, Gen Li   +9 more
doaj   +1 more source

Geochemical characteristics and mechanisms of densification of pre-Jurassic crude oil in the Tainan Sag, Turpan-Hami Basin, China

Unconventional Resources, 2022
Large volumes of heavy oil were distributed in the pre-Jurassic strata of Tainan sag, Turpan Hami Basin, China. The geochemical characteristics and origins of heavy oil are of great significance to future exploration in the region.
Yaao Chi, Bo Liu, Yuchu Chen, Boyang Wang, Longhui Bai, Liu Wang, Yaohui Xu   +6 more
doaj   +1 more source

Critical Review on the Molecular Behavior of Surfactants at the Oil–Water Interface During Oil Displacement

Energy Science &Engineering, EarlyView.
This review systematically explores the molecular behavior of diverse surfactants (anionic, cationic, nonionic, amphoteric) at the oil–water interface through molecular dynamics simulations. It highlights their roles in reducing interfacial tension, altering interfacial structure, and enhancing oil recovery efficiency.
Zhaowei Hou, Wenchao Jiang, Xiaolin Wu, Jian Gai, Liqiang Zheng, Jie Chen, Shuanghua Wang, Shouliang Lu, Bin Huang, Jichao Sun, Long Su   +10 more
wiley   +1 more source

Organic Geochemical Characterization and Exploration Prospects of Hydrocarbon Source Rocks in Nepal

Energy Science &Engineering, EarlyView.
It provides a more detailed introduction to the current situation of oil and gas exploration in Nepal, as well as the properties and distribution characteristics of source rocks. ABSTRACT This study aims to evaluate the hydrocarbon generation potential and exploration prospects of hydrocarbon source rocks in the Dailekh to Dang–Tansen area of Nepal ...
Guoqiang Zhang, Rui Wang, Yinglie Li, Xinhe Wu, Yanming Qu   +4 more
wiley   +1 more source

The impact of multistage fluid and diagenetic environmental coupling on the development of deep clastic rock reservoirs: A case from the Zhuhai Formation, Wenchang A Sag, Zhujiangkou Basin

Energy Exploration & Exploitation
Fluid modification critically affects the quality of clastic rock reservoirs. At present, the mechanism of multistage fluid alteration in clastic rock reservoirs under deep burial conditions is still a matter of debate.
Luyao Zhang, Haiguang Wu, Dawei Fu, Haixue Wang, Xin Lei, Zhida Liu, Lixia Wei, Yuchen Liu   +7 more
doaj   +1 more source