Geologic Features Of Es₁4 Member In Jin6 Block Of Jinjia Oilfield

Jinjia oilfield is located in the territory of Shandong province Huantai County Maqiao Township,the tectonic position is located in the southwest margin of Dongying sag slope belt.Jin6 block is the largest one in Jinjia oilfield.The Es1 member is the mainoil-bearing strata.E₃s₁4 member,the target layer in this study,its oil-bearing area is 1.84km².There are many problems in the 4 sand group of the first member of Shahejie Formation in Jin 6 block,such as the structure is not implemented,the oil-water relationship is not clear,the reservoir heterogeneity is strong,the reservoir is not implemented,the injection production pattern is not perfect,and the utilization rate of reserves is low.It is urgent to carry out the study of reservoir geological characteristics and to make a detailed understanding and characterization of oil reservoirs,so as to lay a geological foundation for improving the utilization rate and recovery rate of such reservoirs.Based on the development characteristics of the 4 member sand group of the first member of Shahejie Formation in Jin 6 block of Jin Jia oilfield,this study has carried out stratigraphic division and contrast,sand body boundary and fine structure description and reservoir characteristics analysis,and established the three-dimensional geological model.Combined with reservoir numerical modeling results and reservoir engineering analysis,reservoir engineering optimization design research is carried out,key points of reservoir engineering design are determined,feasibility of thermal recovery development is demonstrated,technical limits for development of this area are put forward,and geological support for reservoir efficient development is provided.