Dense Sand Conglomerate Reservoir Evaluation Research Of Baikouquan In Well Blockm18, In Mahu Sag

The whole area of M18 well block in baikouquan groupmahu saghas entered the stage of development and design for reservoir,while the reservoir evaluation is still in the subsection of the reservoir.In order to improve the accuracy of reservoir evaluation and improve the efficiency of reservoir development.On the basis of predecessors’ research,the inner layer of the target layer is divided and compared.Through the evaluation of the reservoir characteristics and quality of each layer of the target layer,the heterogeneity of different layer reservoirs was implemented.the research area is divided into three segments by stratigraphic comparison,and each segment is subdivided into three layers.Secondly,through the collection and arrangement of core phase and well logging,the study of single well phase,cross well phase and sedimentary microfacies distribution of each layer is carried out.,the complete water and underwater depositional environment is identified.different from the previous understanding that only underwater deposition of the fan delta can be found.It can be seen from the characteristics of the microfacies distribution of the planar sedimentary microfacies,that it is affected by the invasion of the lake.The size of the fan body from T1b1 to T1b3 is getting smaller.Through the analysis of the core test data,it is realized that the reservoir is mainly granular,and the pores and the natural fractures are not developed.Based on the previous research results,the main reservoir classification parameters were determined based on the experimental data.The classification results of the reservoir with Feci as the evaluation criteria were T1b1: a class of reservoirs accounted for 24.1%,mainly T1b11 and T1b12,and the second type of reservoirs accounted for 41.5%,mainly T1b13.T1b12:13.5% of the reservoirs are mainly T1b22,and the secondary reservoirs account for 25.1%,mainly T1b21 and T1b23.Combined the commonly used evaluation index and the actual oil production test data validate the result of the evaluation,the result has high reliability which have certain guiding significance to the reasonable development in the study area.