Journal of Jilin University(Earth Science Edition) ›› 2021, Vol. 51 ›› Issue (1): 256-265.doi: 10.13278/j.cnki.jjuese.20190255

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A 2D Decomposition Real-Time Drawing Method for Geo-Steering of Logging While Drilling

Shao Cairui1,2,3,4, Yuan Ye1, Zhang Fuming1,2,3,4, Chen Guoxing1,5, Cao Xianjun1,5   

  1. 1. School of Geosciences, China University of Petroleum, Qingdao 266580, Shandong, China;
    2. Laboratory for Marine Mineral Resources, Pilot National Laboratory for Marine Science and Technology(Qingdao), Qingdao 266580, Shandong, China;
    3. Key Laboratory of PetroChina Well Logging Research Center in China University of Petroleum(East China), Qingdao, 266580, Shandong, China;
    4. Key Laboratory of Deep Oil and Gas, Qingdao 266580, Shandong, China;
    5. China CNPC Logging Co., Xi'an, 710061, China
  • Received:2019-12-03 Published:2021-02-02
  • Supported by:
    Supported by the National Natural Science Foundation of China (41874147), the National Science and Technology Major Project (2017ZX05009-001) and the Major Science and Technology Projects of CNPC (ZD2019-183-006)

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Abstract: According to the real time geo-steering and evaluation mapping requirements of logging while drilling in horizontal and high-angle wells, in view of the disadvantages of traditional borehole information displaying methods, a high efficient two-dimensional decomposition drawing method is proposed for real time logging information, well trajectory and strata. Aiming at the high time and space complexity of the two-dimensional decomposition drawing method, this paper provides local real time calculation and screen copy redrawing algorithms driven by different events, which control the consumption of CPU and memory, improve the drawing efficiency, and eliminate flicker and lag in real-time drawing. The application shows that the two-dimensional decomposition real-time drawing method can realize smooth, non-stuttering real time drawing of large-scale logging while drilling and mud logging geo-steering graphics, also it can improve the accuracy and timeliness of the evaluation of highly inclined and horizontal well reservoir models.

Key words: LWD (logging while drilling) and mud logging, geo-steering, huge size, two dimensional comprehensive graphics, efficient real time drawing method

CLC Number: 

  • P631.84
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[1] CHEN Hua, FAN Yi-ren, DENG Shao-gui, LI Zhi-qiang, YANG Zhen. Methods for Real-Time Determination of Formation Boundary with LWD Resistivity Logs in Horizontal Wells [J]. J4, 2011, 41(5): 1623-1629.
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