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Selection criteria and feasibility of the inversion model for azimuthal electromagnetic logging while drilling (LWD)
Wang L1,2; Fan YR; Yuan C3; Wu ZG; Deng SQ; Zhao WN(赵伟娜)
发表期刊PETROLEUM EXPLORATION AND DEVELOPMENT
2018-10-01
卷号45期号:5页码:974-982
ISSN1000-0747
摘要Azimuthal electromagnetic logging while drilling (LWD), which is capable of providing accurate position information approaching bed boundary, has been widely applied in real-time geosteering. For the inversion speed and precision of azimuthal electromagnetic LWD data, the key lies in the selection of proper inversion model and corresponding optimization algorithm. In this study, we first simplified the complex three-dimensional (3D) inversion of data into a series of one-dimensional (1D) inversion problems by using the dimensionality reduction scheme. Then, the feasibility and inversion performance of various 1D inversion models and different optimization methods were investigated, and the best combination between the inversion model and inversion algorithm was also obtained. Numerical simulation results show that the selection of 1D inversion model is dominated by the thickness of targeted beds, whereas the determination of inversion algorithm relies on the total layers amount of the inversion model. For the formation with thickness larger than 4.0 m, the single boundary inversion model and gradient optimization method are recommended. When the bed thickness is between 1.0 m and 4.0 m, the two-boundary inversion model instead of the single-boundary one is needed to estimate upper and lower boundaries around the borehole. For the inversion of azimuthal electromagnetic LWD data of thin layers, the multiple- boundary inversion model and the Bayesian algorithm should be employed.
关键词logging-while-driling azimuthal electromagnetic logging electromagnetic logging inversion model inversion algorithm geosteering bed boundary
DOI10.1016/S1876-3804(18)30101-0
URL查看原文
收录类别SCI ; EI
语种英语
WOS记录号WOS:000451145900018
WOS研究方向Energy & Fuels ; Engineering, Petroleum ; Geosciences, Multidisciplinary
WOS类目Energy & Fuels ; Engineering ; Geology
项目资助者National Natural Science Foundation of China [41474100, 41574118, 41674131] ; Basic Research Funds Reserved to State-run Universities [17CX06041A]
论文分区二类/Q1
力学所作者排名5+
引用统计
文献类型期刊论文
条目标识符http://dspace.imech.ac.cn/handle/311007/78149
专题流固耦合系统力学重点实验室
作者单位1.China Univ Petr, Sch Geosci, Qingdao 266580, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao 266071, Peoples R China
3.China Univ Petr, CNPC Key Lab Well Logging, Qingdao 266580, Peoples R China
4.PetroChina, Res Inst Petr Explorat & Dev, Beijing 100083, Peoples R China
5.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China
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Wang L,Fan YR,Yuan C,et al. Selection criteria and feasibility of the inversion model for azimuthal electromagnetic logging while drilling (LWD)[J]. PETROLEUM EXPLORATION AND DEVELOPMENT,2018,45(5):974-982.
APA Wang L,Fan YR,Yuan C,Wu ZG,Deng SQ,&赵伟娜.(2018).Selection criteria and feasibility of the inversion model for azimuthal electromagnetic logging while drilling (LWD).PETROLEUM EXPLORATION AND DEVELOPMENT,45(5),974-982.
MLA Wang L,et al."Selection criteria and feasibility of the inversion model for azimuthal electromagnetic logging while drilling (LWD)".PETROLEUM EXPLORATION AND DEVELOPMENT 45.5(2018):974-982.
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