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- Title
裂缝对致密储层渗流能力影响实验研究.
- Authors
吕金龙; 卢祥国; 王威; 谢坤; 胡勇
- Abstract
In order to meet the technical requirements of low-permeability gas reservoir development, based on the theoretical guidance of gas reservoir engineering, physical simulation was used to study the action mechanism of fracture on reservoir seepage capacity and its influencing factors by combining with tight gas reservoir geology and fracture distribution pattern. Result indicates that the theoretical permeability of fracture-pore dual-medium core sample is higher than the measured permeability. The actual fracture wall roughness increases the gas flow resistance, which results in a relatively smaller measure permeability value. The core permeability with complete fracture penetration is greatly dependent on the fracture width and quantity. The core permeability with incomplete penetration is rarely dependent on the fracture penetration level and distribution. The gas production capacity of core sample is rarely influenced by the fracture distribution. The permeability of fracture-core dual-medium core sample is significantly affected by its matrix permeability. The gas production capacity of core increases with the increase of fracture width, penetration level and quantity. The gas production rate and time increase while the water intrusion level decreases with the increase of the distance between fracture and bottom-aquifer. Research suggests that fracture can improve reservoir seepage capacity and quantitative evaluation of fracture effect is favorable to enhance gas reservoir development performance.
- Publication
Special Oil & Gas Reservoirs, 2019, Vol 26, Issue 2, p141
- ISSN
1006-6535
- Publication type
Article
- DOI
10.3969/j.issn.1006-6535.2019.02.026