Geologic Features Of Reservoirs In He43 Fault Block Of Es1,Es2,Xianhezhuang Oilfield

He 43 Fault Block is belongs to He 43 fault block area which is locates in the Xianhezhuang oilfield.He 43 fault block area is 1.5 km2,which belongs to the small fault block reservoir which is rich in oil-bearing strata.After nearly 40 years of exploration and development,the production of He 43 fault block in Xianhezhuang oilfield is decreasing year by year,and oil and water wells matching are different in each layer,further development is influenced.In order to improve the oil recovery,taking the Es1,Es2 of He 43 fault block as the research object for geologic features of reservoirs description,using the high resolution sequence stratigraphy theory,make full use of seismic,geological,well logging and drilling data,established reservoir geological model.Division and contrast for the sand group and main small layer of he 43 fault block established the fine stratigraphic framework;Analysised and determined the main control factors of the reservoir formation in this area is the fault and sedimentary facies;Through the analysis of controlling factors in each reservoir,formed new viewpoints in reservoir type;Distribution characteristics of oil and gas in this region were determined by the study of sedimentary characteristics and distribution of reservoir.By the studies in geological model,structural model and reservoir model on the He43 fault block,the oil and water distribution of the block to get new understanding.Awareness degree of reservoir geology in this area has been further improved.The combination of the fundamental geological research and the current injection case have important significance to explore the potential and stable the yield,it is also provide a reference for explore the potential in other similar reservoir.