Evaluation Of Oil And Gas Reserves In The Block Of Chang 30 In The Trift Of The Side Of The Yitong Basin

The reserves of oil and natural gas are the reserves of oil and natural gas in the underground.It is a comprehensive reflection of the exploration and development results of oil and gas fields.Whether in the exploration stage or in the development stage,oil and gas reserves have always been the main targets pursued by petroleum workers,and are also a very important task in the exploration and development of oil and gas fields.Oil and gas reserves are the important basis for guiding the exploration and development of oil and gas fields and determining the scale of investment.Therefore,the accuracy of the calculation of oil and natural gas reserves is crucial.Chang 30 block is located in the Liang Jia structural belt area of the southern part of the cha Lu River fault depression in Yitong Basin.The two member of the first member and the Yongji formation is the main oil bearing zone,which has good exploration and development potential.Based on the understanding of reservoir characteristics and hydrocarbon enrichment rules,we need to objectively evaluate reserves calculation parameters,so as to understand the distribution characteristics of geological reserves.The Chang 30 block Sheling group A and group Yongji two cores,logging,3D seismic and geological data based on oil and gas accumulation theory,the research methods of geology,sedimentology,geochemistry,combining oil geology to study area.On this basis,then according to the development characteristics of contiguous lithologic reservoir sand,starting from the single well control area,calculate the single well controlled area;and based on the core properties,such as particle size,thin mercury,magnetic,electric and special rock chemical analysis,parameters of effective thickness,porosity,oil saturation etc..Finally,the geological reserves,the recoverable reserves and the economically recoverable reserves of the study area are calculated through volumetric method,so as to reflect the distribution characteristics of the geological reserves and the remaining geological reserves,which provides a reliable basis for tapping the potential and enhancing oil recovery.