The Application Of Well-to-seismic Integration Technique In Reservoir Description Of Duandong In Beiyi Area

The Sazhong Developing Area of Daqing Oilfield, which have been developed for40-50years, is now entering to the later-developing period. It’s character is high-water-cut oil-producing, and the residual oil is "overall dispersed but relatively concentrated in local area", and there are still a lot of remaining oil in ground. However, it is difficult to enhance the oil recovery rate, because we don’t recognize a clear picture of the subsurface reservoir. Logging interpretation of conglomerate reservoir is very difficult in the Sazhong Developing Area with complex rock structure, strong heterogeneity and a greater degree of uncertainty between wells. In order to describe a clear picture of the subsurface reservoir, we need to process the received seismic data, which is the most effective technology to do the well prediction.The seismological technique, which has been used in oil exploration for decades, is a very proven technique. So far, it has successfully solved the problem of earlier-stage evaluation for oilfield. But processing of seismic data is regarded as a technique with little accuracy when the direction, aim and scale changed. There are new challenge to use the exploitation seismic data for the old oilfield. So how to carry out the Seismic Data Modeling work under the condition of close well spacing? How to use the geological statistics method in seismic data inversion and modeling? This paper has done a lot of fundamental work, including the reconstruction of the recognition of the subsurface structure, the recognition system of subsurface reservoir, the recognition system of subsurface fluid and so on.