Integrated interpretation of 3D gravity,magnetic,electromagnetic and seismic data:a case study of conglomerate mass investigation in piedmont area of Kuche Depression
Li Dechun1, Yang Shujiang1, Hu Zuzhi1, Zhao Zhi1, Li Yong2, Zhong Dakang3, Sun Weibin1, Ji Liansheng1
1. GME and Geochemical Surveys,BGP Inc.,CNPC,Zhuozhou,Hebei 072751,China;
2. Research Institute of Exploration & Development,Tarim Oilfield Company,PetroChina,Korla,Xinjiang 841000,China;
3. China University of Petroleun
Abstract:In piedmont area of Kuche Depression,widely developed conglomerate masses seriously disturb seismic image and interpretation of deep structures.So integrated 3D gravity,magnetic and electromagnetic survey in the area was planned with the purpose of investigating conglomerate mass and its variation of lithology and lithofacies with the reference of logging data,seismic data and outcrops information.With improved approaches of data processing,3D EM data is integrated with seismic data on a united platform.This makes an integrated interpretation change from a simple qualitative comparison way to a more accurate study.A joint inversion on major sections gives the spatial distribution of conglomerate masses formed in different time.It provides bases for the investigation of subsalt structures,and velocity model building.
李德春, 杨书江, 胡祖志, 赵志, 李勇, 钟大康, 孙卫斌, 冀连胜. 三维重磁电震资料的联合解释——以库车大北地区山前砾石层为例[J]. 石油地球物理勘探, 2012, 47(2): 353-359.
Li Dechun, Yang Shujiang, Hu Zuzhi, Zhao Zhi, Li Yong, Zhong Dakang, Sun Weibin, Ji Liansheng. Integrated interpretation of 3D gravity,magnetic,electromagnetic and seismic data:a case study of conglomerate mass investigation in piedmont area of Kuche Depression. OGP, 2012, 47(2): 353-359.