Experimental study on the effect of fillers on fracture closure in fault-karst reservoir

Fracture is an important percolation channel in fault solution reservoir, and its closure law under geostress has an important influence on reservoir permeability.The physical simulation experiments of carbonate rock samples were carried out to study the influence of fracture occurrence (vertical fr...

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Published in地质科技通报 Vol. 40; no. 6; pp. 70 - 76
Main Authors Qiangfu Kong, Genhua Shang, Kunyan Liu, Xiaobo Li
Format Journal Article
LanguageChinese
Published Editorial Department of Bulletin of Geological Science and Technology 01.11.2021
Subjects
ct scanning
digital core
fault-karst reservoir
fracture closure law
tahe oilfield
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Abstract Fracture is an important percolation channel in fault solution reservoir, and its closure law under geostress has an important influence on reservoir permeability.The physical simulation experiments of carbonate rock samples were carried out to study the influence of fracture occurrence (vertical fracture and high angle fracture) and filling on the law of fracture closure.The fracture specimen is prepared by Brazilian splitting experiment and wire cutting method, and the fracture deformation analysis method based on CT scanning gray image is constructed.The fracture closure is characterized by core permeability and fracture width.The results show that the fracture width and specimen permeability decrease gradually with the increase of pressure; the stronger the ductility of the filler is, the more obvious the fracture closure under pressure is, and the greater the decrease of permeability is; for quartz-filled cracks, the fracture permeability is different under different filling methods, and the supporting e
AbstractList Fracture is an important percolation channel in fault solution reservoir, and its closure law under geostress has an important influence on reservoir permeability.The physical simulation experiments of carbonate rock samples were carried out to study the influence of fracture occurrence (vertical fracture and high angle fracture) and filling on the law of fracture closure.The fracture specimen is prepared by Brazilian splitting experiment and wire cutting method, and the fracture deformation analysis method based on CT scanning gray image is constructed.The fracture closure is characterized by core permeability and fracture width.The results show that the fracture width and specimen permeability decrease gradually with the increase of pressure; the stronger the ductility of the filler is, the more obvious the fracture closure under pressure is, and the greater the decrease of permeability is; for quartz-filled cracks, the fracture permeability is different under different filling methods, and the supporting e
Author Genhua Shang
Kunyan Liu
Qiangfu Kong
Xiaobo Li
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  organization: Research Institute of Petroleum Exploration & Development, PetroChina, Beijing 100083, China
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  organization: Petroleum Exploration & Production Institute, SINOPEC, Beijing 100083, China
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  fullname: Kunyan Liu
  organization: Petroleum Exploration & Production Institute, SINOPEC, Beijing 100083, China
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  fullname: Xiaobo Li
  organization: SINOPEC-Northwest, Urumqi 830011, China
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Snippet Fracture is an important percolation channel in fault solution reservoir, and its closure law under geostress has an important influence on reservoir...
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SubjectTerms ct scanning
digital core
fault-karst reservoir
fracture closure law
tahe oilfield
Title Experimental study on the effect of fillers on fracture closure in fault-karst reservoir
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