Application of pre-stack simultaneous inversion on the reservoir identification and fluid prediction: A case history of Es2 member reservoir in Shengli Oilfield

3rd International Conference on Energy Engineering and Environmental Protection

能源学;生态环境科学

Zhang, Jin^1^2^3 ; Guo, Xubing^1 ; Xu, Bing^4 ; Wang, Xing^1 ; Shen, Peng^1 ; Chen, Song^1

College of Marine Geosciences, Ocean University of China, Shandong Province, Qingdao

266000, China^1

Key Lab of Submarine Geosciences and Prospecting Techniques, Ministry of Education, Shandong Province, Qingdao

266000, China^2

Qingdao National Laboratory for Marine Science and Techniques, Shandong Province, Qingdao

266000, China^3

Information Technology College, Kunming University, Yunnan Province, Kunming

650000, China^4

关键词: Bohai Bay Basin;    Elastic parameters;    Fluid prediction;    Seismic attributes;    Seismic datas;    Seismic inversion;    Shengli Oilfield;    Well-log analysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/227/6/062003/pdf
DOI  :  10.1088/1755-1315/227/6/062003

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Es2 member reservoir of Guojuzi sag is located in the east Bohai Bay Basin in China, mainly composed of beach bar sediments, which are thin and in irregular distribution. Conventional post-stack seismic attributes cannot predict the reservoir effectively, while pre-stack seismic inversion also has difficulties in application for the low SNR seismic data. A number of amplitude preserved processes are taken to obtain high SNR seismic data. Then AVA simultaneous inversion is adopted to achieve elastic parameters. Well log analysis shows that μρ and lower Vp/Vs can be good indicators for our target reservoir, therefore we extract μρ and Vp/Vs attribute sections and slices from the result of AVA simultaneous inversion and have successfully delineate the spatial distribution of Es2 member reservoir, which are in consistent with the known well log data.