$Semi-Analytical Rate Decline Solutions for a Refractured Horizontal Well Intercepted by Multiple Reorientation Fractures with Fracture Face Damage in an Anisotropic Tight Reservoir$
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Semi-Analytical Rate Decline Solutions for a Refractured Horizontal Well Intercepted by Multiple Reorientation Fractures with Fracture Face Damage in an Anisotropic Tight Reservoir

Refracturing treatment is an economical way to improve the productivity of poorly or damaged fractured horizontal wells in tight reservoirs. Fracture reorientation and fracture face damage may occur during refracturing treatment. At present, there is still no report on the rate decline solution for...

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Autores principales:	Mingxian Wang, Xiangji Dou, Ruiqing Ming, Weiqiang Li, Wenqi Zhao, Chengqian Tan
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	semi-analytical rate decline solutions reorientation fracture fracture face damage horizontal well permeability anisotropy tight reservoir Technology T
Acceso en línea:	https://doaj.org/article/8bbf1a33dfdc472797f4b2a111f91241
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spelling	oai:doaj.org-article:8bbf1a33dfdc472797f4b2a111f912412021-11-25T17:25:55ZSemi-Analytical Rate Decline Solutions for a Refractured Horizontal Well Intercepted by Multiple Reorientation Fractures with Fracture Face Damage in an Anisotropic Tight Reservoir10.3390/en142274821996-1073https://doaj.org/article/8bbf1a33dfdc472797f4b2a111f912412021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/22/7482https://doaj.org/toc/1996-1073Refracturing treatment is an economical way to improve the productivity of poorly or damaged fractured horizontal wells in tight reservoirs. Fracture reorientation and fracture face damage may occur during refracturing treatment. At present, there is still no report on the rate decline solution for refractured horizontal wells in tight reservoirs. In this work, by taking a semi-analytical method, traditional rate decline and Blasingame-type rate decline solutions were derived for a refractured horizontal well intercepted by multiple reorientation fractures with fracture face damage in an anisotropic tight reservoir. The accuracy and reliability of the traditional rate decline solution were verified and validated by comparing it with a classic case in the literature and a numerical simulation case. The effects of fracture reorientation and fracture face damage on the rate decline were investigated in depth. These investigations demonstrate that fracture face damage is not conducive to increasing well productivity during the early flow period and there is an optimal matching relationship between the principal fracture section angle and permeability anisotropy, particularly for the reservoirs with strong permeability anisotropy. The fracture length ratio and fracture spacing have a weak effect on the production rate and cumulative production while the fracture number shows a strong influence on the rate decline. Furthermore, multifactor sensitivity analysis indicates that fracture conductivity has a more sensitive effect on well productivity than fracture face damage, implying the importance of improving fracture conductivity. Finally, a series of Blasingame-type rate decline curves were presented, and type curve fitting and parameter estimations for a field case were conducted too. This work deepens our understanding of the production performance of refractured horizontal wells, which helps to identify reorientation fracture properties and evaluate post-fracturing performance.Mingxian WangXiangji DouRuiqing MingWeiqiang LiWenqi ZhaoChengqian TanMDPI AGarticlesemi-analytical rate decline solutionsreorientation fracturefracture face damagehorizontal wellpermeability anisotropytight reservoirTechnologyTENEnergies, Vol 14, Iss 7482, p 7482 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	semi-analytical rate decline solutions reorientation fracture fracture face damage horizontal well permeability anisotropy tight reservoir Technology T
spellingShingle	semi-analytical rate decline solutions reorientation fracture fracture face damage horizontal well permeability anisotropy tight reservoir Technology T Mingxian Wang Xiangji Dou Ruiqing Ming Weiqiang Li Wenqi Zhao Chengqian Tan Semi-Analytical Rate Decline Solutions for a Refractured Horizontal Well Intercepted by Multiple Reorientation Fractures with Fracture Face Damage in an Anisotropic Tight Reservoir
description	Refracturing treatment is an economical way to improve the productivity of poorly or damaged fractured horizontal wells in tight reservoirs. Fracture reorientation and fracture face damage may occur during refracturing treatment. At present, there is still no report on the rate decline solution for refractured horizontal wells in tight reservoirs. In this work, by taking a semi-analytical method, traditional rate decline and Blasingame-type rate decline solutions were derived for a refractured horizontal well intercepted by multiple reorientation fractures with fracture face damage in an anisotropic tight reservoir. The accuracy and reliability of the traditional rate decline solution were verified and validated by comparing it with a classic case in the literature and a numerical simulation case. The effects of fracture reorientation and fracture face damage on the rate decline were investigated in depth. These investigations demonstrate that fracture face damage is not conducive to increasing well productivity during the early flow period and there is an optimal matching relationship between the principal fracture section angle and permeability anisotropy, particularly for the reservoirs with strong permeability anisotropy. The fracture length ratio and fracture spacing have a weak effect on the production rate and cumulative production while the fracture number shows a strong influence on the rate decline. Furthermore, multifactor sensitivity analysis indicates that fracture conductivity has a more sensitive effect on well productivity than fracture face damage, implying the importance of improving fracture conductivity. Finally, a series of Blasingame-type rate decline curves were presented, and type curve fitting and parameter estimations for a field case were conducted too. This work deepens our understanding of the production performance of refractured horizontal wells, which helps to identify reorientation fracture properties and evaluate post-fracturing performance.
format	article
author	Mingxian Wang Xiangji Dou Ruiqing Ming Weiqiang Li Wenqi Zhao Chengqian Tan
author_facet	Mingxian Wang Xiangji Dou Ruiqing Ming Weiqiang Li Wenqi Zhao Chengqian Tan
author_sort	Mingxian Wang
title	Semi-Analytical Rate Decline Solutions for a Refractured Horizontal Well Intercepted by Multiple Reorientation Fractures with Fracture Face Damage in an Anisotropic Tight Reservoir
title_short	Semi-Analytical Rate Decline Solutions for a Refractured Horizontal Well Intercepted by Multiple Reorientation Fractures with Fracture Face Damage in an Anisotropic Tight Reservoir
title_full	Semi-Analytical Rate Decline Solutions for a Refractured Horizontal Well Intercepted by Multiple Reorientation Fractures with Fracture Face Damage in an Anisotropic Tight Reservoir
title_fullStr	Semi-Analytical Rate Decline Solutions for a Refractured Horizontal Well Intercepted by Multiple Reorientation Fractures with Fracture Face Damage in an Anisotropic Tight Reservoir
title_full_unstemmed	Semi-Analytical Rate Decline Solutions for a Refractured Horizontal Well Intercepted by Multiple Reorientation Fractures with Fracture Face Damage in an Anisotropic Tight Reservoir
title_sort	semi-analytical rate decline solutions for a refractured horizontal well intercepted by multiple reorientation fractures with fracture face damage in an anisotropic tight reservoir
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/8bbf1a33dfdc472797f4b2a111f91241
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Semi-Analytical Rate Decline Solutions for a Refractured Horizontal Well Intercepted by Multiple Reorientation Fractures with Fracture Face Damage in an Anisotropic Tight Reservoir

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