Selection criteria and feasibility of the inversion model for azimuthal electromagnetic logging while drilling (LWD)

doi:10.1016/S1876-3804(18)30101-0

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	Selection criteria and feasibility of the inversion model for azimuthal electromagnetic logging while drilling (LWD)
	Wang L 1,2; Fan YR ; Yuan C 3; Wu ZG ; Deng SQ ; Zhao WN(赵伟娜)
刊名	PETROLEUM EXPLORATION AND DEVELOPMENT
	2018-10-01
卷号	45 期号:5 页码:974-982
关键词	logging-while-driling azimuthal electromagnetic logging electromagnetic logging inversion model inversion algorithm geosteering bed boundary
ISSN号	1000-0747
DOI	10.1016/S1876-3804(18)30101-0
英文摘要	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.
分类号	二类/Q1
URL标识	查看原文
WOS研究方向	Energy & Fuels ; Engineering, Petroleum ; Geosciences, Multidisciplinary
语种	英语
WOS记录号	WOS:000451145900018
资助机构	National Natural Science Foundation of China [41474100, 41574118, 41674131] ; Basic Research Funds Reserved to State-run Universities [17CX06041A]
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/78149]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
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
推荐引用方式 GB/T 7714	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.