Research Of Logging Evaluation For Reservoirs Of Batken Development Block

The lithology of the Bartken block,which is developed last century,is complicated and the mineralization degree of the formation water is greatly changed,which greatly affects the identification of the fluid properties by the electrical curve.At the same time,the physical properties,electrical properties,oil content and reservoir lower limit values of different oil reservoirs are different.The same interpretation parameters and interpretation model are used to identify the lithology and fluid properties.Therefore,this paper takes Block J30,J31and J32 as the research object,and analyzes the existing problems,combined with various data,and forms a set of logging interpretation method which is suitable for the area,and has achieved some achievements and knowledge.The results obtained are as follows:?The geological stratification of the block is corrected by comparative analysis;?The lithology of the clastic reservoir is dominated by quartz sandstone,followed by feldspar sandstone,clay minerals are mainly illite The lithologic properties of the Paleogene and Cretaceous are mainly oil-producing,while the Jurassic is dominated by gas production;?The lithology of carbonate rocks is characterized by iron dolomite and calcite;?The porosity of the neutron density intersection is close to that of the core analysis,which can be used as the basis of the porosity model of the block;?The regression equation of the core analysis data can be used as the permeability;?The selection of the model based on the calculation of the layers of the RW and the formation of water resistivity is relatively close to meet the needs of production;?Established interpretation of the standard:the 4^th oil group oil layer RT?50?·m,dry layer<20%,the14^th oil group oil layer RT?10?·m,dry layer?<14%,the 16^th and 18^th oil group and oil gas layer RT?20?·m,24^th oil group gas layer RT?8?·m,dry layer?<14%.The conclusions drawn are as follow:?1?The oil content of the 16^th oil group is greatly affected by the tectonic structure,and the oil content of the 18^th oil group is controlled by the cracks and tectonics.?2?The Block J3 and J32 are shallow,that is,by the original water and surface water composition,and Block J32 buried deep reservoir is the main water;?The14^th oil group with oil and gas characteristics in the Block J30 is mainly called low resistance oil and gas layer,but for Block J31 and J32,the oil group shows poor oil and gas.The logging interpretation method is used to explain the logging data,and the detailed analysis of some key wells is carried out.The interpretation conclusion of the 116.1m floor of 38 layers is revised,and the conclusion of the correction is basically consistent with the results of the test oil,and the logging coincidence rate of 89.5%.Through the study greatly improved the accuracy of logging interpretation for future exploration and development to provide some helps.