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Haolin REN, Chenglin LIU, Wenping LIU, Xiya YANG, Wenyan LI. 2020. Stress field simulation and fracture development prediction of the Wufeng Formation-Longmaxi Formation in the Fushun-Yongchuan Block, Sichuan Basin. Journal of Geomechanics, 26(1): 74-83. doi: 10.12090/j.issn.1006-6616.2020.26.01.008
Citation: Haolin REN, Chenglin LIU, Wenping LIU, Xiya YANG, Wenyan LI. 2020. Stress field simulation and fracture development prediction of the Wufeng Formation-Longmaxi Formation in the Fushun-Yongchuan Block, Sichuan Basin. Journal of Geomechanics, 26(1): 74-83. doi: 10.12090/j.issn.1006-6616.2020.26.01.008
shu

Stress field simulation and fracture development prediction of the Wufeng Formation-Longmaxi Formation in the Fushun-Yongchuan Block, Sichuan Basin

  • 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.

    Shale Gas Research Institute, PetroChina Southwest Oil & Gas Field Company, Chengdu 610051, Sichuan, China

  • 4.

    Petroleum Exploration Division, Petro China Qinghai Oilfield, Dunhuang 736202, Gansu, China

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Received Date:  11 June 2019
Revised Date:  18 November 2019
    Abstract
  • The tectonic fractures in rocks are mainly controlled by the regional tectonic stress field where the strata are located. Tectonic stress plays an important role in the migration, accumulation and distribution of oil and gas. The stress field of the Wufeng Formation-Longmaxi Formation in the Fushun-Yongchuan Block of the Sichuan Basin was simulated and analyzed by ANSYS finite element software; The three-point method in the method of structural curvature method was used to predict the development of cracks in the shale, and the comprehensive simulation results and curvature calculation data were used to predict the fracture intensity in the target area. The results proved that the distribution of the high stress value of the Wufeng Formation-Longmaxi Formation in the Fushun-Yongchuan Block is along the anticline, and the anticline stress values in the eastern and southwestern part of the study area are higher than those in other areas; the distribution of high curvature is along the anticline, and the curvature values of the anticline in the east and southwest of the study area are higher than those in other areas; the fracture in the anticline of the study area has a higher level of development, and it's lower in the syncline, at the same time it's higher in the anticline of the eastern and southwestern part of the study area than other areas under the current stress.
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