A New Approach to Calculate Effective Stimulated Reservoir Volume in Shale Gas Reservoir

被引：5
|
作者：
Su Y. [1 ]
Sheng G. [1 ]
Wang W. [1 ]
Jia J. [2 ]
Wu C. [3 ]
机构：
[1] School of Petroleum Engineering, China University of Petroleum, Qingdao
[2] Sulige Gas Field Research Center, Changqing Oilfield Company, PetroChina, Xi'an
[3] Tianjin Branch of CNOOC, Tianjin
来源：
Wang, Wendong (wwdong@upc.edu.cn) | 1600年 / China University of Geosciences卷 / 42期
关键词：
Effective stimulated reservoir volume; Fracture space; Petroleum geology; Shale gas reservoir; Volume fracturing;
D O I：
10.3799/dqkx.2017.532
中图分类号：
学科分类号：
摘要：
Hydraulic fracturing practices in shale reservoirs show that effective stimulated reservoir volume (ESRV) significantly affects the production of hydraulic fractured well. Therefore, estimating ESRV is an important prerequisite for the evaluation and production prediction of hydraulic fracturing wells in shale reservoirs. This paper introduces a representation elementary volume (REV) of orthogonal discrete fracture coupled dual-porosity matrixflow model to predict the volumetric flux of gas in shale reservoirs. The influence of fracture space and fracture width on gas migration was studied. Considering fractal characteristics of the fracture network in stimulated reservoir volume (SRV), fractal dimension was used to quantitatively evaluate the fracture space distribution. Combining the effective fracture space and fractal characteristic of fracture network, a new approach was proposed to evaluate the ESRV in shale reservoirs. The approach was used in Eagle Ford shale gas reservoir and the results show that the fracture space has a great influence on migration of adsorbed gas. Fracture network has a contribution to enhance absorbed and free gas recovery ratio when the fracture space is less than 0. 20 m. The ESRV was evaluated in this paper and the results indicate that the ESRV accounts for 37. 78% of the total SRV in shale gas reservoir. The ESRV was influenced by both secondary fracture distribution and effective fracture space, as a result of reservoir intrinsic property and hydraulic fracturing practices. © 2017, Editorial Department of Earth Science. All right reserved.
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页码：1314 / 1323
页数：9
相关论文
共 51 条
  • [1] Akkutlu I.Y., Fathi E., Multiscale Gas Transport in Shales with Local Kerogen Heterogeneities, SPE Journal, 17, 4, pp. 1002-1011, (2012)
  • [2] Anderson D.M., Nobakht M., Moghadam S., Et al., Analysis of Production Data from Fractured Shale Gas Wells, SPE Unconventional Gas Conference, (2010)
  • [3] Bustin A., Bustin R.M., Cui X.J., Importance of Fabric on the Production of Gas Shales, SPE Unconventional Reservoirs Conference, (2008)
  • [4] Cai J.C., Yu B.M., Prediction of Maximum Pore Size of Porous Media Based on Fractal Geometry, Fractals, 18, 4, pp. 417-423, (2010)
  • [5] Cai J.C., Yu B.M., A Discussion of the Effect of Tortuosity on the Capillary Imbibition in Porous Media, Transport in Porous Media, 89, 2, pp. 251-263, (2011)
  • [6] Chen X.M., Li J.Z., Zheng M., Et al., Kerogen Solution Theory and Its Exploratory Application in Shale Gas Assessment, Natural Gas Geoscience, 23, 1, pp. 14-18, (2012)
  • [7] Civan F., Effective Correlation of Apparent Gas Permeability in Tight Porous Media, Transport in Porous Media, 82, 2, pp. 375-384, (2010)
  • [8] Cui M.Y., Liu Y.Z., Xiu N.L., Et al., Analysis of Factors Affecting the Formation of Effective Stimulated Reservoir Volume (ESRV), Oil Drilling & Production Technology, 36, 2, pp. 82-87, (2014)
  • [9] Denney D., Optimizing Horizontal Completions in the Barnett Shale with Microseismic Fracture Mapping, Journal of Petroleum Technology, 57, 3, pp. 41-43, (2005)
  • [10] Du B.J., Cheng L.S., Cao R.Y., Et al., Development Effective of the Volumetric Fracturing Horizontal Well in Tight Oil Reservoir, Petroleum Geology & Oilfield Development in Daqing, 33, 1, pp. 96-101, (2014)
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