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Pre-stack Anisotropy Fractures Detection Based on OVT Domain Gather Data and Its Application in Ultra-deep Burial Carbonate Rocks

Received: 22 March 2020     Accepted: 10 April 2020     Published: 22 October 2020
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Abstract

There are abundant fracture cave reservoirs wrapped in Ordovician tight limestone in the Tarim Basin, with an average buried depth of 7000m. The connectivity analysis of fracture-porous systems and hydrocarbon-bearing analysis has essential roles in the deployment of high-efficiency wells of the Ordovician carbonate reservoirs in the Tazhong and Tabei areas of Tarim Basin, as they are the major targets for increasing production. However, in the previous researches, the pre-stack fractures’ prediction and the oil/gas detection results using conventional processing data were lack of accuracy, which failed to complete the need of high-precision exploration and development. Firstly, the paper systematically analyzes the characteristics of azimuthal anisotropy analysis using conventional processing seismic data. Then it explains the process of selecting data, which is capable to meticulous reflect anisotropy characteristics of the formation and contains uniformed coverage to improve convergent results of elliptical fitting. Finally, the paper focuses on the three steps of operating azimuthal anisotropic pre-stack fracture detection using common reflection angle gather and receiving a reliable result. Practice demonstrates that using common reflection angle gathers during research of fractures in carbonate rock has a distinctive effect, which can provide a decisive basis for the layout of high-efficiency well groups in the development block.

Published in Earth Sciences (Volume 9, Issue 5)
DOI 10.11648/j.earth.20200905.17
Page(s) 210-218
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2020. Published by Science Publishing Group

Keywords

Azimuthal Anisotropy, Pre-stack Fracture Detection, OVT Domain Gather, Reliable Analysis, Carbonate Reservoirs

References
[1] Kang Yuzhu. (2007). Reservoir Rock Characteristics Of Paleozoic Marine Facies Carbonate Rock In The Tarim Basin [J]. Petroleum Geology & Experiment, (03): 217-223.
[2] ZOU Cai-neng, LI Qi-ming, WU Guang-hui, MA Feng. (2009). Characteristics and Exploration Direction of Cambrian-Ordovician Carbonate Rocks in Tarim Basin [J]. Xinjiang Petroleum Geology, 30 (04): 450-453.
[3] Li Daoshan, Cao Mengqi, Wang Jianzhong, Li Longmei, and Li Haiyin. (2014). An Application of Full Azimuth Common Reflection Angle Prestack Depth Migration on the Fracture Detecting of Carbonate Reservoirs, SEG Global Meeting Abstracts: 405-407.
[4] Yang Qinyong. (2006). The Research on Fractured Reservoir Prediction Using P-wave Seismic Methods [D]. Jilin University.
[5] HE Zhenhua, LI Yalin, ZHANG Fan, HUANG Deji. (2001). Different Effects of Vertically Oriented Fracture System on Seismic Velocities and Wave Amplitude [J]. Computing Techniques For Geophysical and Geochenical Exploration, (01): 1-5.
[6] Michael Davidson, Herbert Swan, Samik Sil, Jack Howell, Robert Olson, and Changxi Zhou. (2011). A robust workflow for detecting azimuthal anisotropy, SEG Technical Program Expanded Abstracts: 259-263.
[7] DU Qizhen and YANG Huizhu. (2003). Detection Method For Fractures In Azimuthally Anisotropic Media [J]. Journal of the University of Petroleum, China, (04): 32-36+148.
[8] YIN Zhiheng, DI Bangrang, LI Xiangyang, ZHANG Zheng, WEI Jianxin, DENG Yuanjun. (2011). Progress in P-wave Anisotropy Technology for Fracture Detection [J]. Science & Technology Review, 29 (30): 73-79.
[9] LI Haiyin, YANG ping, WANG Jianzhong, LI Xiangwen. (2012). Application of wide azimuth seismic exploration technology in carbonate fracture prediction [C].// proceedings of the second China Petroleum Exploration and development Youth Academic Exchange, petroleum industry press,(in Chinese), 2012: 578-586.
[10] LI Xiangwen, DAN Guangjian, AN Haiting, LI Haiyin. (2015). Application of Geo East-Easy Track in the Study of Fractured Vuggy Carbonate Rocks [J]. Inner Mongolia Petrochemical Industry, 41 (01): 1-4+26.
[11] LI Xiangwen, LIU Yonglei, AN Haiting, LI Haiyin, DAN Guangjian, ZHANG Liangliang. (2016). Application of full azimuth common reflection angle gather on the study of fractured carbonate reservoirs [J]. Computing Techniques for Geophysical and Geochemical Exploration, 38 (01): 89-95.
[12] Li Xiangwen, Liu Yonglei, Dan Guangjian, Lv Dong, Wang Xiongfei. (2016). Application of Full Azimuth High Density Seismic 5D Gathers in the Quantitative Study of Fractures in Carbonates, SEG Global Meeting Abstracts: 440-443.
[13] Duan Wensheng, Li Fei, Wang Yanchun, Wang Chunhe, Dang Qingning. (2013). Offset vector tile for wide-azimuth seismic processing [J]. Oil Geophysical Prospecting, 48 (02): 206-213+332+157.
[14] Powell M J D. (1987). Radial basis function approximations to polynomials [M]. Proc. Numer. Anal., Dundee, U. K.
[15] Powell M J D. (1987). Radial basis function approximations to polynomials [C]. // Proc. Biennial Numerical Analysis Conference (Dundee), 223-241.
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Cite This Article
  • APA Style

    Xiangwen Li, Jingye Li, Yonglei Liu, Peiling Ma, Jiaoying Bi, et al. (2020). Pre-stack Anisotropy Fractures Detection Based on OVT Domain Gather Data and Its Application in Ultra-deep Burial Carbonate Rocks. Earth Sciences, 9(5), 210-218. https://doi.org/10.11648/j.earth.20200905.17

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    ACS Style

    Xiangwen Li; Jingye Li; Yonglei Liu; Peiling Ma; Jiaoying Bi, et al. Pre-stack Anisotropy Fractures Detection Based on OVT Domain Gather Data and Its Application in Ultra-deep Burial Carbonate Rocks. Earth Sci. 2020, 9(5), 210-218. doi: 10.11648/j.earth.20200905.17

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    AMA Style

    Xiangwen Li, Jingye Li, Yonglei Liu, Peiling Ma, Jiaoying Bi, et al. Pre-stack Anisotropy Fractures Detection Based on OVT Domain Gather Data and Its Application in Ultra-deep Burial Carbonate Rocks. Earth Sci. 2020;9(5):210-218. doi: 10.11648/j.earth.20200905.17

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  • @article{10.11648/j.earth.20200905.17,
      author = {Xiangwen Li and Jingye Li and Yonglei Liu and Peiling Ma and Jiaoying Bi and Liangliang Zhang and Hongbo Zhou and Yiren Chen and Lei Zhang},
      title = {Pre-stack Anisotropy Fractures Detection Based on OVT Domain Gather Data and Its Application in Ultra-deep Burial Carbonate Rocks},
      journal = {Earth Sciences},
      volume = {9},
      number = {5},
      pages = {210-218},
      doi = {10.11648/j.earth.20200905.17},
      url = {https://doi.org/10.11648/j.earth.20200905.17},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.earth.20200905.17},
      abstract = {There are abundant fracture cave reservoirs wrapped in Ordovician tight limestone in the Tarim Basin, with an average buried depth of 7000m. The connectivity analysis of fracture-porous systems and hydrocarbon-bearing analysis has essential roles in the deployment of high-efficiency wells of the Ordovician carbonate reservoirs in the Tazhong and Tabei areas of Tarim Basin, as they are the major targets for increasing production. However, in the previous researches, the pre-stack fractures’ prediction and the oil/gas detection results using conventional processing data were lack of accuracy, which failed to complete the need of high-precision exploration and development. Firstly, the paper systematically analyzes the characteristics of azimuthal anisotropy analysis using conventional processing seismic data. Then it explains the process of selecting data, which is capable to meticulous reflect anisotropy characteristics of the formation and contains uniformed coverage to improve convergent results of elliptical fitting. Finally, the paper focuses on the three steps of operating azimuthal anisotropic pre-stack fracture detection using common reflection angle gather and receiving a reliable result. Practice demonstrates that using common reflection angle gathers during research of fractures in carbonate rock has a distinctive effect, which can provide a decisive basis for the layout of high-efficiency well groups in the development block.},
     year = {2020}
    }
    

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  • TY  - JOUR
    T1  - Pre-stack Anisotropy Fractures Detection Based on OVT Domain Gather Data and Its Application in Ultra-deep Burial Carbonate Rocks
    AU  - Xiangwen Li
    AU  - Jingye Li
    AU  - Yonglei Liu
    AU  - Peiling Ma
    AU  - Jiaoying Bi
    AU  - Liangliang Zhang
    AU  - Hongbo Zhou
    AU  - Yiren Chen
    AU  - Lei Zhang
    Y1  - 2020/10/22
    PY  - 2020
    N1  - https://doi.org/10.11648/j.earth.20200905.17
    DO  - 10.11648/j.earth.20200905.17
    T2  - Earth Sciences
    JF  - Earth Sciences
    JO  - Earth Sciences
    SP  - 210
    EP  - 218
    PB  - Science Publishing Group
    SN  - 2328-5982
    UR  - https://doi.org/10.11648/j.earth.20200905.17
    AB  - There are abundant fracture cave reservoirs wrapped in Ordovician tight limestone in the Tarim Basin, with an average buried depth of 7000m. The connectivity analysis of fracture-porous systems and hydrocarbon-bearing analysis has essential roles in the deployment of high-efficiency wells of the Ordovician carbonate reservoirs in the Tazhong and Tabei areas of Tarim Basin, as they are the major targets for increasing production. However, in the previous researches, the pre-stack fractures’ prediction and the oil/gas detection results using conventional processing data were lack of accuracy, which failed to complete the need of high-precision exploration and development. Firstly, the paper systematically analyzes the characteristics of azimuthal anisotropy analysis using conventional processing seismic data. Then it explains the process of selecting data, which is capable to meticulous reflect anisotropy characteristics of the formation and contains uniformed coverage to improve convergent results of elliptical fitting. Finally, the paper focuses on the three steps of operating azimuthal anisotropic pre-stack fracture detection using common reflection angle gather and receiving a reliable result. Practice demonstrates that using common reflection angle gathers during research of fractures in carbonate rock has a distinctive effect, which can provide a decisive basis for the layout of high-efficiency well groups in the development block.
    VL  - 9
    IS  - 5
    ER  - 

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Author Information
  • State Key Laboratory of Petroleum Resources and Prospecting, CNPC Key Laboratory of Geophysical Prospecting, China University of Petroleum-Beijing, Beijing, China

  • State Key Laboratory of Petroleum Resources and Prospecting, CNPC Key Laboratory of Geophysical Prospecting, China University of Petroleum-Beijing, Beijing, China

  • Bureau of Geophysical Prospecting (BGP) INC., China National Petroleum Corporation (CNPC), Zhuozhou, China

  • Bureau of Geophysical Prospecting (BGP) INC., China National Petroleum Corporation (CNPC), Zhuozhou, China

  • Bureau of Geophysical Prospecting (BGP) INC., China National Petroleum Corporation (CNPC), Zhuozhou, China

  • Bureau of Geophysical Prospecting (BGP) INC., China National Petroleum Corporation (CNPC), Zhuozhou, China

  • Bureau of Geophysical Prospecting (BGP) INC., China National Petroleum Corporation (CNPC), Zhuozhou, China

  • Bureau of Geophysical Prospecting (BGP) INC., China National Petroleum Corporation (CNPC), Zhuozhou, China

  • Bureau of Geophysical Prospecting (BGP) INC., China National Petroleum Corporation (CNPC), Zhuozhou, China

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