The Research On Excavating Remaining Oil Potential Through Injection And Production System On Western X1 Block Of Saretu Oilfield

The basic well pattern of X1 western block of in Western Saertu oilfield was put into development in 1970,and an encryption adjustment was carried out in 1985,the two encryption adjustment was carried out in 1993.In 2000,according to the requirements of the well area,the two adjustment wells 3 wells other,the three encryption adjustment was carried out in 2004.Water flooding is mainly based on two or three types of reservoir development,the developmental connectivity is low and the control time is extended with the development time.With the development time prolonged,the water absorption capacity decreased obviously in some areas with imperfect injection and production.In some areas with imperfect injection and production,there are some problems such as obvious decrease of water absorption capacity,increase of water cut speed,and decrease of natural decline.In view of the above,in 2013,the potential tapping technology of remaining oil was carried out in the western block area of X1.On the basis of fine geological research,and the potential distribution of remaining oil has been put into practice.The main potential tapping targets are determined.The method of adjusting injection production system is adopted to optimize the design of layer recombination scheme.The emphasis is on improving the injection production relation of the fault edge.Better oil stabilizing and water controlling effect has been obtained.It can provide reference guidance for fine tapping potential in super high water cut stage of water flooding.