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Hydraulic Fracturing in Oil and Gas Reservoirs

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "H: Geo-Energy".

Deadline for manuscript submissions: closed (20 August 2021) | Viewed by 2415

Special Issue Editors


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Guest Editor
GFZ German Research Centre for Geosciences, Helmholtz Centre Potsdam, DynaFrax UG, Germany
Interests: hydraulic fracturing; induced seismicity; shale gas reservoir; earthquake

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Guest Editor
Department of Energy & Resources Engineering, Korea Maritime and Ocean University, Busan, Korea
Interests: geomechanics; X-ray C; thydraulic fracturing; geothermal; drilling

Special Issue Information

Dear Colleagues,

Hydraulic fracturing is a method to enhance oil and natural gas extraction from underground geological formations. It involves injection of an engineered fluid under high pressure in order to crack the rock containing the hydrocarbon. The method is not new, but its use has been wide since being combined with horizontal drilling technology. Hydraulic fracturing is now widely practiced in the US and in China for both natural gas and oil production, and even in deep geothermal reservoir development. The technology has evolved in various ways, such as use of CO2 as a fracturing fluid, microwave fracturing, cyclic fatigue fracturing, as well as development of various numerical modeling techniques to simulate thermohydromechanical coupled processes in hydraulic fracturing. In this Special Issue on “Hydraulic Fracturing in Oil and Gas Reservoirs”, we would like to encourage you to share and discuss your recent findings related to hydraulic fracturing technology, which include but are not limited to numerical modelings, laboratory experiments, and field observations.

Dr. Jeoung Seok Yoon
Prof. Kwang Yeom Kim
Guest Editors

Manuscript Submission Information

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Keywords

  • hydraulic fracturing
  • unconventional reservoir
  • numerical modeling
  • laboratory experiment
  • THM coupled process

Published Papers (1 paper)

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Research

17 pages, 3695 KiB  
Article
Study on Well Selection Method for Refracturing Horizontal Wells in Tight Reservoirs
by Qihong Feng, Jiawei Ren, Xianmin Zhang, Xianjun Wang, Sen Wang and Yurun Li
Energies 2020, 13(16), 4202; https://doi.org/10.3390/en13164202 - 14 Aug 2020
Cited by 3 | Viewed by 1900
Abstract
Refracturing technology is one of the key technologies to recover the productivity of horizontal wells in tight oil reservoirs, and the selection of best candidate wells from target blocks is the basis of this technology. Based on the refracturing production database, this paper [...] Read more.
Refracturing technology is one of the key technologies to recover the productivity of horizontal wells in tight oil reservoirs, and the selection of best candidate wells from target blocks is the basis of this technology. Based on the refracturing production database, this paper analyzes the direct relationship between geological data, initial fracturing completion data, and dynamic production data, and the stimulation effect of refracturing. Considering the interaction among multiple factors, the factors affecting the stimulation effect of refracturing are classified and integrated, and a comprehensive index including geology, engineering, and production is constructed, making this index meaningful both for physical and engineering properties. The XGBoost decision tree model is established to analyze the weight of influence for the comprehensive index of geology, engineering, and production in predicting the stimulation effect of refracturing. A comprehensive decision index of refracturing well selection is formed by combining the above three for performing a fast selection of horizontal candidate wells for fracturing. Taking a horizontal well test area in Songliao Basin as an example, the target wells of refracturing are selected by this method, and field operation is carried out, and a good stimulation effect is achieved. The results show that the comprehensive decision-making index constructed by this method is reliable and has certain guiding significance for well selection and stimulation potential evaluation of tight oil reservoir. Full article
(This article belongs to the Special Issue Hydraulic Fracturing in Oil and Gas Reservoirs)
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