流-固耦合物理模拟实验及其对页岩压裂改造的启示

康永尚; 邓泽; 王红岩; 刘洪林; 袁春林; 赵群

doi:10.3799/dqkx.2016.522

Volume 41 Issue 8

Aug. 2016

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Article Navigation > Earth Science > 2016 > 41(8): 1376-1383

Kang Yongshang, Deng Ze, Wang Hongyan, Liu Honglin, Yuan Chunlin, Zhao Qun, 2016. Fluid-Solid Coupling Physical Experiments and Their Implications for Fracturing Stimulations of Shale Gas Reservoirs. Earth Science, 41(8): 1376-1383. doi: 10.3799/dqkx.2016.522

Citation:

Kang Yongshang, Deng Ze, Wang Hongyan, Liu Honglin, Yuan Chunlin, Zhao Qun, 2016. Fluid-Solid Coupling Physical Experiments and Their Implications for Fracturing Stimulations of Shale Gas Reservoirs. Earth Science, 41(8): 1376-1383. doi: 10.3799/dqkx.2016.522

Citation:

Kang Yongshang, Deng Ze, Wang Hongyan, Liu Honglin, Yuan Chunlin, Zhao Qun, 2016. Fluid-Solid Coupling Physical Experiments and Their Implications for Fracturing Stimulations of Shale Gas Reservoirs. Earth Science, 41(8): 1376-1383. doi: 10.3799/dqkx.2016.522

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Fluid-Solid Coupling Physical Experiments and Their Implications for Fracturing Stimulations of Shale Gas Reservoirs

doi: 10.3799/dqkx.2016.522

1.
College of Geosciences, China University of Petroleum, Beijing 102249, China
2.
State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China
3.
Langfang Branch of Research Institute of Petroleum Exploration and Development, PetroChina, Langfang 065007, China

Received Date: 2015-03-17
Publish Date: 2016-08-15

Abstract

Abstract

The mechanisms of permeability variations and fracture extension are essential for hydraulic fracturing design in shale gas exploitation. Based on fluid-solid coupling physical experiments and Micro-CT imaging analysis, this study reveals two important phenomena: (1) loading-unloading-reloading cycle has an effect on increasing the permeability of shale samples, (2) during the reloading process, the permeability of shale samples show different trends with increasing axial pressure. In the permeability increasing case with increasing axial pressure, the fractures are produced directionally and orderly. In another case, the fractures are produced disorderly and locally mylonitic. The results show that (1) pumping-intermission-repumping multi-cycles could help modify the stimulation effect of in-site fracturing operations, and (2) hydraulic fracturing volume should be appropriately controlled for naturally fractured shale gas reservoirs.
- shale gas,
- fluid-solid coupling effect,
- physical experiment,
- permeability,
- CT imaging,
- fracturing stimulation,
- petroleum geology

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References(32)

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Fluid-Solid Coupling Physical Experiments and Their Implications for Fracturing Stimulations of Shale Gas Reservoirs

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