| In recent years,the development process of sulige gas field has been carried out some preliminary gas reservoir geological studie.But with the degree of exploitation,the current geological knowledge of Su 54 wellblock is not enough to solve the problem in the production process,such as single well gas production rate decline,and water rate increased quickly.It is need to deepen the reservoir characteristics analysis,and deepen the effect evaluation level of horizontal well development.Provide theory and technical support to improve the development of efficient gas field.In this paper,in the study area has been basis on the division of stable stratigraphic formwork,based on core observation results,study the reservoir sand body characteristic in study area,such as petrological characteristics,physical characteristics and heterogeneity characteristics.The reserch uses casting thin sections,high pressure physical experiment,scanning electron microscope,etc.observation methods and combin with drilling,logging,mud logging and production performance data,and consides structure characteristics and the depositional environment.Improve the reservoir interpretation model of gas-bearing sand body.according to the production dynamic analysis data and testing data,Establishing gas-water identification standard and analysising the single-layer gas-water distribution laws,according to the production dynamic analysis data and testing data.The results show that,the reservoir rocks are mainly quartz sandstone and lithic quartz sandstone and lithic sandstone.Pore types are mainly lithic dissolved pore or intergranular hole.Throat type are mainly flake or bending flake throat.Gas bearing properties on profile show that water poly on western,gas ploy on east.And on the north-south direction,compared to the north and south direction rich water and central gas together.The distribution of gas-water is not controlled by the structure,but is affected by sedimentary facies. |
PDF Full Text Request