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Article by Li Y
Article by Zhang F
Article by Tai Z
Article by Hao M
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Normalized full gradient of gravity based on derivative-iteration method
LI Yin-fei, ZHANG Feng-xu, TAI Zhen-hua, HAO Meng-cheng
College of Geo-exploration Science and Technology, Jilin University, Changchun 130026, China
Abstract: Aiming at solving the problem of low resolution and precision for the detection of oil reservoirs by normalized full gradient of gravity, the authors use downward continuation of the derivative iterative method to calculate normalized full gradient of gravity. The Fourier transform and this method are both used in the model tests. The influence of harmonic number N, depth and fullness coefficient on GH field are analyzed. The results show that compared with Fourier transform, this method is less affected by the influence from harmonic number N, and the resolution of GH field to reservoirs is higher and the inversed depth is more accurate. The validity of the method is verified by practical application.
Keywords: normalized full gradient of gravity   derivative-iteration method   harmonic number   depth   fullness coefficient  
�ո����� 2017-03-16 �޻����� 2017-12-07 ����淢������  
DOI: 10.3969/j.issn.1004-5589.2018.01.020
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