Results 21 to 30 of about 19,163 (249)

New empirical scaling equations for oil recovery by free fall gravity drainage in naturally fractured reservoirs

Energy Geoscience, 2023
Gas-oil gravity drainage is a recognized major contributor to production in fractured reservoirs. While various empirical and analytical methods have been proposed to model this process, many of them contain assumptions that are questionable or require ...
Marzieh Alipour, Mohammad Madani
doaj   +1 more source

Study on time–space characteristics of gas drainage in advanced self‐pressure‐relief area of the stope

Energy Science & Engineering, 2023
Gas drainage is an important measure to ensure energy safety in coal mines. However, for mines with high gas content and low permeability, the critical question is how to enhance the drainage effect of drilling.
Xi Jie, Wang Zhaofeng, Chen Dongdong, Chen Jinsheng   +3 more
doaj   +1 more source

Full-cycle prediction of gas production variations in gas wells using different production methods [PDF]

E3S Web of Conferences
Gas production from gas wells is affected by formation pressure and wellbore outflow during gas production. To increase the daily gas production and obtain smooth and efficient gas production gas wells, methods such as wellbore shut-in pressure recovery ...
Gao Wei, Hua Zhongzhi, Liu Yang, Liu Liping, Cheng Jiarui   +4 more
doaj   +1 more source

Numerical analysis of drainage rate for multilayer drainage coalbed methane well group in Southern Qinshui basin

Energy Exploration & Exploitation, 2020
Multilayer drainage is one of the important technologies for coalbed methane (CBM) production in China. In this study, a multi-field fully coupled mathematical model for CBM production was established to analyze the multilayer drainage of CBM well group ...
Qiujia Hu, Shiqi Liu, Shuxun Sang, Huihuang Fang, Ashutosh Tripathy, Ling Yan, Mengfu Qin, Chonghao Mao   +7 more
doaj   +1 more source

Analysis and countermeasures for adaptability of drainage and recovery technology for shale gas

Youqicang pingjia yu kaifa, 2020
Due to the own application conditions of the electric submersible pump and other drainage and gas recovery technologies, they cannot adapt to different drainage and gas recovery periods of shale gas wells in the south block of Pingqiao. In order to solve
ZHANG Honglu, XU Ke, GAO Yongmei, XU Qian, HAN Qian   +4 more
doaj  

Enhanced Gas Recovery in Water-Drive Gas Reservoirs: Theoretical Advances, Engineering Practices, and Future Trends [PDF]

E3S Web of Conferences
Water invasion is a core factor constraining efficient development and ultimate recovery in water-drive gas reservoirs. Non-uniform water invasion can reduce recovery by 15%-50% compared with water-free gas reservoirs of the same type.
Yang Jianping, Zhang Yongbin, Ye Liyou, Tian Zhengkun, Lin Bocen, Liu Huaxun, Gao Shusheng   +6 more
doaj   +1 more source

Research and Design of Intelligent Monitoring System for Drainage Gas Recovery by Intermittent Gas Lift

Shiyou jixie, 2022
In order to overcome the shortcomings of drainage gas recovery by intermittent gas lift such as traditionally determining working system by experience and manual field operation,a complete intelligent monitoring system design scheme was proposed,and a ...
Wang Yi, Jia Cheng, Ju Jinwu, Ren Junsong, Peng Xutao, Wu Junping   +5 more
doaj  

Numerical Simulation of Gas-Solid Coupling in Pressure-Relief Gas Drainage of Short-Distance and Underprotective Steeply Inclined Coal Seam Mining

Geofluids, 2022
The accuracy of the drainage radius plays a vital role in the gas drainage effect, and the establishment of the drainage model and numerical calculation of the model has an essential value for the accurate determination of the drainage radius.
Xinshan Peng, Zhaofeng Wang, Lingling Qi
doaj   +1 more source

Influence of recovery model of coalbed methane wells after drainage interruption on coal fines migration in propped fractures

Meikuang Anquan
In the drainage process of coalbed methane well, the interruption of drainage will induce a large amount of coal fines to stay in propped fractures, causing damage to the permeability of propped fractures. Based on the solid-liquid two-phase flow and gas-
Chonghao MAO, Fansheng HUANG, Qiujia HU, Shiqi LIU, Cong ZHANG, Xinglong LEI   +5 more
doaj   +1 more source

Electrocapillary Modulated Interfacial Tension Amplifies Liquid Metal Transduction

Advanced Functional Materials, EarlyView.
This study presented an electrocapillary‐enhanced magnetohydrodynamic pumping strategy that harnesses the Lorentz force and interfacial tension modulation of liquid metal droplets to achieve amplified fluidic power. The system enabled low‐voltage, self‐oscillating fluidic transduction with enhanced pressure and flow generation, supporting compact ...
Saba Firouznia, Ciqun Xu, Michael D. Dickey, Jonathan Rossiter   +3 more
wiley   +1 more source