Results 21 to 30 of about 109,134 (261)

Experimental Study on Influence of Mechanical Vibration on Performance of Cement Plug in Abandoned Wells

Shiyou jixie, 2022
High-quality plugging of abandoned wellbore is an important part in the abandonment technology system of oil and gas wells.In this paper,a method of improving the wellbore plugging quality by active mechanical vibration was proposed,and a laboratory test
Ma Xiqi, Wang Chao, Xu Hongfei, Gao Mingxing, Liu Zhanao, Yi Xianzhong, Liu Hangming   +6 more
doaj  

Development of Dual-casing Section Milling Tool

Shiyou jixie, 2022
In the abandoned well operations,it is often necessary to milling dual-casing in section.The conventional casing section milling tool requires at least two trips,so the operation efficiency is low,which cannot better meet the requirements of field ...
Zhao Chuanwei, Liu Han, Wu Zhonghua, Huo Weidong, Wang Keke, Chen Rui, Wang Wei   +6 more
doaj  

Numerical Simulation of Abandoned Gob Methane Drainage through Surface Vertical Wells. [PDF]

PLoS ONE, 2015
The influence of the ventilation system on the abandoned gob weakens, so the gas seepage characteristics in the abandoned gob are significantly different from those in a normal mining gob.
Wei Qin, Jialin Xu, Guozhong Hu
doaj   +1 more source

Unconventional technology for sealing and P&A of wells for prevention of global environmental disasters [PDF]

E3S Web of Conferences, 2021
Many, if not all of the oil and gas fields under development, have leaking wells. There are a lot of so-called abandoned, ownerless wells. Subsoil users, by one way or another, make efforts to eliminate leakage in such wells.
Zakirov Sumbat, Klimov Dmitry, Zakirov Ernest, Indrupskiy Ilya, Anikeev Daniil   +4 more
doaj   +1 more source

The method of identification of abandoned channel by dense well pattern and its application in A Oilfield [PDF]

E3S Web of Conferences
The existence of abandoned channel represents the end of the evolution history of single river channel. Taking the C layer in B area, A oilfield as an example, synthesizing the logging response characteristics, plane distribution pattern and the relative
Wang Xiaolei
doaj   +1 more source

Usage, Retention, and Abandonment of Agile Practices: A Survey and Interviews Results [PDF]

e-Informatica Software Engineering Journal, 2019
Background: A number of Agile maturity models (AMMs) have been proposed to guide software organizations in their adoption of Agile practices. Typically the AMMs suggest that higher maturity levels are reached by gradually adding more practices.
Indira Nurdiani, Jürgen Börstler, Samuel Fricker, Kai Petersen   +3 more
doaj   +1 more source

Evaluation of the heat extraction performance of an abandoned well pattern in multilayer commingled production oil reservoirs

Natural Gas Industry B, 2022
Oilfield geothermal energy is one important part of geothermal resources, and it can be developed and used for power generation and heating. The geothermal reserves and production of multi-layer sandstone oil reservoirs account for 50% of the total ...
Xianzhi Song, Fuqiang Xu, Jiayan Ji, Yu Shi   +3 more
doaj   +1 more source

Study on the Influence of Temperature Distribution in Thermite Plugging Abandoned Well Technology

Energies
With the intensive development of oil and gas resources leading to a rapid increase in abandoned wells, sealing failures may cause oil and gas leakage and environmental pollution.
Hao Liu, Jie Zhang, Ruitao Sun, Xiang Li, Jiajun Yao, Jiazheng Zhou   +5 more
doaj   +1 more source

Methane Extraction from Abandoned Mines by Surface Vertical Wells: A Case Study in China

Geofluids, 2018
Considerable methane resources exist in abandoned coal mines. However, methane extraction from abandoned mines in China is still in the exploratory stage.
Shengyong Hu, Ao Zhang, Guorui Feng, Xiangqian Guo, Xuyang Miu, Chao Li, Dandan Han, Jin Wang, Lixun Kang   +8 more
doaj   +1 more source

Revitalization Modelling of a Mature Oil Field with Bottom-Type Aquifer into Geothermal Resource—Reservoir Engineering and Techno-Economic Challenges

Energies, 2023
The possibilities of using geothermal energy are slowly expanding to all areas of energy consumption, so the assessment of geothermal potential has become the backbone of energy policies in countries that have the potential.
Martina Tuschl, Tomislav Kurevija
doaj   +1 more source