Reservoir Modeling And Simulation Of BP32-X50 Well Area In Songliao Basin

BP32-X50 well area is located in the east of Zhaozhou nose structure in the northern central depression of Songliao Basin. The total number of production wells is 100, which includes 67 oil wells and 33 water wells in about 18km2 area. PI oil-producing formation is characterized by the delta front deposit and rich development in sand body. Such jobs as well log interpretation, reservoir heterogeneity, remaining oil distribution characteristics are all needed to be done and researched in the development adjustment stage. and to provide a reference and advice for the recognization of reservoir characteristics, the searching for remaining oil and the adjustment of development plan.The paper will make full use of seismic, logging, production, testing data to finish a comprehensive research combining well logging secondary interpretation, reservoir geological modeling and reservoir numerical simulation. The main research understanding as follows:(1)By well logging secondary interpretation to establish the reservoir parameters calculation model and oil-water bearing layer interpretation chart. The average porosity of Putaohua reservoir is 18.90%, the average permeability is 9.05×10-3μm2, the average oil saturation is 64.48%. this results is greatly Consistent with the coring test.(2)In order to quantitatively characterize the distribution and heterogeneity of porosity, permeability, oil saturation in reservoir space, the sequential gaussian simulation was used. PI22 and PI31 have a good geophysical property. The geological reserves of reservoir model is 387.79 ×104t.(3)The geological reserves of reservoir simulation fitting model is 386.44 ×104 t, cumulative production oil is 43.93 ×104t, recovery degree is 11.37%, remaining geological reserves is 342.51 ×104t. because the bad geophysical condition the oil recovery degree is only 3.32% in PI32 layer at present, the next step is to strengthen the development. the oil recovery degree of PI51 and PI52 is only 7.32% and 9.68%,they are the subject we should focus attention to. Remaining oil mainly distribute in the areas sealed by fault boundary, and in the oil well area that water-injection effect is poorer. The prediction of the cumulative production oil is 93.85×104t, the recovery ratio is 24.2% in 2025 by using optimal scheme that the injection-production ratio is 1.0 and current liquid injection recovery.