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Building of 4D reservoir model based on development performance
YAN Ke1,2, YANG Shao chun3, REN Huai qiang3
(1.Postdoctoral Scientific Research Workstation of Shengli Oilfield , Dongying 257002, China;2.Shengli Oil Production Plant of Shengli Oilfield, Dongying 257051, China;3.College of Geo Resources and Information in China University of Petroleum, Dongying 257061, China)
Abstract:
Taking the 11 layer of second member of Shahejie formation in Shengtuo Oilfield exploited by waterflood for more than 40 years as an example, a mathematical evolutionary model of reservoir properties correlated with reservoir performance was achieved by delimiting the dynamic well pattern unit, tracing the well pattern and development performance, characterizing the water drive degree quantitatively and using the multivariate regression analysis. The reservoir properties in different phase were figured out, and a 4D reservoir model was set up based on reservoir development performance. The results show that the reservoir properties value in initial development stage can be transformed to arbitrary stage by mathematical evolutionary model. The quantity and distribution range of modeling data in different development stage can be enlarged efficiently. Not only could the 4D reservoir model based on development performance characterize the past and present spatial distribution of the reservoir properties visually and quantitatively, but also forecast the future reservoir properties by using development trend analysis.
Key words:  reservoir property  dynamic well pattern unit  water drive degree  mathematical evolutionary model  4D model  Shengtuo Oilfield