Application of Integrated Geophysical Technique in Basement Structure Research in Binbei Area
详细信息
- 责任者：Cui Ruihua (Exploration and Development Research Institute ; Daqing Oilfield Company Ltd. ; Daqing 163712 ; China) ; Gu Shefeng
- 刊名：Petroleum Geology & Oilfield Development in Daqing
- 出版年：2011
- 卷期：30(1)
- 关键词：基底构造 ; basement tectonics ; 地球物理勘探 ; geophysical exploration ; 松辽平原 ; Songliao Plain
- 页码：p.170-174
- 图表：5 illus., 15 refs.
- 分类号：1600
- issnNo：ISSN1000-3754
- isbnNo：CN23-1286/TQ
摘要
In order to research the basement structure of Binbei area in Songliao Basin, various integrated geophysical methods for classification of fracture framework, prediction of matrix lithology and inversion of basement depth in early exploration and evaluation of deep-layer of Binbei area are discussed, and the application effects of gravity-magnetic-seismic joint inversion are analyzed. Faulting anomaly in different depth can be reflected from gravity anomaly and magnetic anomaly using gravity stripping technology and multiiscale wavelet decomposition respectively, and the composite processing to the faulting anomaly by sub-domain filtering combined with horizontal gradient vector modulus is effective to classify the faulting. A preferred plan for basement lithology prediction is concluded using apparent density, relative magnetic susceptibility and its correlation coefficient, combined with neural network. During the research of basement depth by gravity-seismic stripping and interactive interpretation technology, high accuracy of seismic data is fully taken advantage of to reflect the interface of shallow layer or reflect the geologic body, which provides accurate inversion parameters for interactive simulation, reduces the ambiguity of potential field inversion, and makes the explanation results more credible.