Preconditioned Inversion of 3D Borehole to Surface Electromagnetic for Reservoir Exploration

Li，Jinghe1; He，Zhanxiang2; Feng，Naixing3

2019

10.1007/s00024-019-02285-2

PURE AND APPLIED GEOPHYSICS   影响因子和分区

0033-4553

1420-9136

The accurate interpretation of three-dimensional borehole to surface electromagnetic (BSEM) data has two challenging problems: the accuracy of forward modeling and the efficiency of the inversion process. In this paper, we used the least squares method to develop a preconditioned algorithm combined parametric inversion and resistivity image to overcome these difficulties for reservoir exploration. To improve accuracy, we suggest using the full integral equation (IE) solution for forward modeling. Taking into account that the IE method requires the mesh discretization of an anomalous body only, the parametric inversion based on the IE method would provide an preconditioned inverse domain consisting of the complex structure via a few parameters. Based on the predicted preconditioned inverse domain, the conventional Green’s functions can be recomputed only once and kept unchanged in iterative inversion process of resistivity image, which increases significantly the size of the inverse domain and the computation for IE modeling. The resistivity of background and complex structures embedded in layered stratum are considered to simulate the practical application in preconditioned inversion. Synthetic examples with noise studies are conducted to demonstrate that the preconditioned algorithm can be applied quickly and effectively in a complex structure inversion for BSEM in reservoir exploration.

Borehole to surface electromagnetic integral equation least square method parametric inversion resistivity image

SCI ; EI

英语

其他

China Postdoctoral Science Foundation[2016M592611] ; [41604097] ; [2016GXNSFBA380195]

Geochemistry & Geophysics

Geochemistry & Geophysics

WOS:000498999500009

Birkhauser

20193107260862

Exploratory boreholes ; Integral equations ; Iterative methods ; Least squares approximations

Calculus:921.2 ; Numerical Methods:921.6

GEOSCIENCES

2-s2.0-85069916505

Scopus

1.College of Earth SciencesGuilin University of Technology,Guilin,541004,China
2.Department of Earth and Space SciencesSouthern University of Science and Technology,Shenzhen,518055,China
3.College of Electronic Science and TechnologyShenzhen University,Shenzhen,518060,China

Li，Jinghe,He，Zhanxiang,Feng，Naixing. Preconditioned Inversion of 3D Borehole to Surface Electromagnetic for Reservoir Exploration[J]. PURE AND APPLIED GEOPHYSICS,2019,176(12):5349-5362.

Li，Jinghe,He，Zhanxiang,&Feng，Naixing.(2019).Preconditioned Inversion of 3D Borehole to Surface Electromagnetic for Reservoir Exploration.PURE AND APPLIED GEOPHYSICS,176(12),5349-5362.

Li，Jinghe,et al."Preconditioned Inversion of 3D Borehole to Surface Electromagnetic for Reservoir Exploration".PURE AND APPLIED GEOPHYSICS 176.12(2019):5349-5362.