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Natural Fractures Characterization and In Situ Stresses Inference in a Carbonate Reservoir—An Integrated Approach

Author

Listed:
  • Ali Shafiei

    (Department of Petroleum Engineering, School of Mining and Geosciences, Nazarbayev University, Astana 010000, Kazakhstan)

  • Maurice B. Dusseault

    (Department of Earth & Environmental Sciences, University of Waterloo, Waterloo, ON N2L 3G1, Canada)

  • Ehsan Kosari

    (Research Institute for Earth Sciences, Geological Survey of Iran, P.O. Box 13185-1494 Tehran, Iran)

  • Morteza N. Taleghani

    (National Iranian Offshore Oil Company (IOOC), P.O. Box 13185-1494 Tehran, Iran)

Abstract

In this paper, we characterized the natural fracture systems and inferred the state of in situ stress field through an integrated study in a very complex and heterogeneous fractured carbonate reservoir. Relative magnitudes and orientations of the in-situ principal stresses in a naturally fractured carbonate heavy oil field were estimated with a combination of available data (World Stress Map, geological and geotectonic evidence, outcrop studies) and techniques (core analysis, borehole image logs and Side View Seismic Location). The estimates made here using various tools and data including routine core analysis and image logs are confirmatory to estimates made by the World Stress Map and geotectonic facts. NE-SW and NW-SE found to be the dominant orientations for maximum and minimum horizontal stresses in the study area. In addition, three dominant orientations were identified for vertical and sub-vertical fractures atop the crestal region of the anticlinal structure. Image logs found useful in recognition and delineation of natural fractures. The results implemented in a real field development and proved practical in optimal well placement, drilling and production practices. Such integrated studies can be instrumental in any E&P projects and related projects such as geological CO 2 sequestration site characterization.

Suggested Citation

  • Ali Shafiei & Maurice B. Dusseault & Ehsan Kosari & Morteza N. Taleghani, 2018. "Natural Fractures Characterization and In Situ Stresses Inference in a Carbonate Reservoir—An Integrated Approach," Energies, MDPI, vol. 11(2), pages 1-26, February.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:2:p:312-:d:129787
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    References listed on IDEAS

    as
    1. Yongfei Yang & Zhihui Liu & Zhixue Sun & Senyou An & Wenjie Zhang & Pengfei Liu & Jun Yao & Jingsheng Ma, 2017. "Research on Stress Sensitivity of Fractured Carbonate Reservoirs Based on CT Technology," Energies, MDPI, vol. 10(11), pages 1-15, November.
    2. Haijiao Liu & Xuhui Zhang & Xiaobing Lu & Qingjie Liu, 2017. "Study on Flow in Fractured Porous Media Using Pore-Fracture Network Modeling," Energies, MDPI, vol. 10(12), pages 1-17, December.
    3. Siroos Salimi & Ali Ghalambor, 2011. "Experimental Study of Formation Damage during Underbalanced-Drilling in Naturally Fractured Formations," Energies, MDPI, vol. 4(10), pages 1-20, October.
    4. Junling Fang & Fengde Zhou & Zhonghua Tang, 2017. "Discrete Fracture Network Modelling in a Naturally Fractured Carbonate Reservoir in the Jingbei Oilfield, China," Energies, MDPI, vol. 10(2), pages 1-19, February.
    5. Zhaohui Chong & Xuehua Li & Xiangyu Chen & Ji Zhang & Jingzheng Lu, 2017. "Numerical Investigation into the Effect of Natural Fracture Density on Hydraulic Fracture Network Propagation," Energies, MDPI, vol. 10(7), pages 1-33, July.
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