Tarim deep zone developed oilfield watered out layer seismic interpretation

Abstract

There is a large proportion of oilfield buried deeply in Tarim (usually more than 5000 meters), seismic data are insufficient to directly identify the reservoir on vertical thickness and lateral variation, the identification precision of watered out layer in the oil-field development needs to be improved. In the condition of long-term water flooding development, reservoir of water flooded zone get passive reconstruction, especially in the water injection ineffective circulation zone, it will form dominant migration pathway, provide the conditions to recognize watered out layer by a new acquired seismic data during the middle and later stage of oilfield development. On the base of fine well-seismic tie, carefully tracking the lateral variation of new 3D seismic data from water injection wells, taking the seismic attributes and seismic facies as the main research method, combining the characteristic of tracer and other production dynamic, to identify watered out layer distribution area, predict remaining oil enrichment zone. This method has a good effect in the DH oil fields, it raises the importance of seismic data acquisition for Tarim deep zone developed oilfield during the middle and later stage and expands the application potential and the research value of seismic data in this type of oilfield.