Sensitivity analysis and inversion processing of azimuthal resistivity logging-while-drilling measurements
作者: Lei WangHu LiYiren FanZhenguan Wu
作者单位: 1School of Geosciences, China University of Petroleum, Qingdao 266580, People’s Republic of China
2Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, People’s Republic of China
3CNPC Key Laboratory for Well Logging, China University of Petroleum, Qingdao 266580, People’s Republic of China
4SPE Member, Katy, TX 77494, United States of America
刊名: Journal of Geophysics and Engineering, 2018, Vol.15 (6)
来源数据库: Institute of Physics Journal
DOI: 10.1088/1742-2140/aacbf4
原始语种摘要: We present systematic sensitivity analyses of logging-while-drilling azimuthal resistivity measurements (ARM). These analyses provide us the clear images of the sensitivities of the ARM to various formation parameters, such as bed boundary, current and shoulder layer formation resistivities, and dip angle. Optimized parameter bounds and initial values for inversion are also derived from these analyses. Furthermore, a fast-accurate, regularized Gauss–Newton inversion approach is developed to implement the inversion processing of ARM. Several strategies are applied to optimize and accelerate the inversion process: (1) a depth sliding window divides the 3D formation structure into a set of approximate ‘stitched’ 1D layered model, which is particularly useful for the interpretation in...
全文获取路径: IOP  (合作)

  • inversion 倒转
  • azimuthal 方位的
  • processing 加工
  • resistivity 电阻率
  • drilling 钻进
  • reservoir 贮水池
  • logging 测井
  • accelerate 促进
  • analysis 分析
  • formation 建造