Case studies of high resolution imaging of complex reservoirs using two-step migration: Jianghan oilfield and Shengli oilfield in China

Joongmoo Byun, Rena M. Hatch, Gang Yu, Yong Zhang, Jian Yu Zhou, Yi Wei Xu

Research output: Contribution to conferencePaper

1 Scopus citations

Abstract

Crosswell two-step migration, VSP-CDP mapping followed by post-map migration, was applied to two complex reservoir data sets collected from JiangHan Oilfield and ShengLi Oilfield in China. The goals of the surveys were to delineate structural and stratigraphic complexities to assist in production and recovery planning for the reservoir. The final migrated images clearly depict the fault structures in JiangHan Oilfield profile and indicate the location and extension patterns of the faults in ShengLi Oilfield. In migrating crosswell seismic reflection data, complications such as edge effects, migration smiling effects, and post-critical reflections, which are associated with the survey geometry and downhole environment are often encountered. This two-step migration can reduce these effects. I f interpretation is done using both the VSP-CDP mapped image and the post-map migrated image, real geological structures can be distinguished from migration artifacts.

Original languageEnglish
StatePublished - 2002 Jan 1
Event2002 Society of Exploration Geophysicists Annual Meeting, SEG 2002 - Salt Lake City, United States
Duration: 2002 Oct 62002 Oct 11

Conference

Conference2002 Society of Exploration Geophysicists Annual Meeting, SEG 2002
CountryUnited States
CitySalt Lake City
Period02/10/602/10/11

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    Byun, J., Hatch, R. M., Yu, G., Zhang, Y., Zhou, J. Y., & Xu, Y. W. (2002). Case studies of high resolution imaging of complex reservoirs using two-step migration: Jianghan oilfield and Shengli oilfield in China. Paper presented at 2002 Society of Exploration Geophysicists Annual Meeting, SEG 2002, Salt Lake City, United States.