Time-lapse Seismic Technique Development and Application in Unconsolidated Sandstone Heavy Oil Oilfield of Bohai Area

摘要

According to a series of difficult problems such as thin reservoir layer、strong inhomogeneity, unconsolidated sandstone、heavy oil waterflood development and so on, also the urgent requirement of promoting the recovery factor, 《marine time-lapse seismic oil reservoir monitoring technique》research project is set up by national "shiwu"863 plan. In this paper, the author introduces a series of key time-lapse techniques researched and developed in this project and their applications in the target oilfield, which are used to estimate the residual oil distribution, and are helpful to enhance the oil&gas output and recovery factor.