Study On Interpretation Of Water Flooded Layer In Putaohua And Fuyu Formations In Sanzhao Area

Study on interpretation of water flooded layer in Putaohua and Fuyu formations in Sanzhao area, experiment and core analysis data as the basis, according to the work area reservoir geological characteristics, the use of different methods and techniques, for the three set of well logging series10oil field (blocks) are set up for the study area, the porosity permeability, saturation of reservoir parameter calculation model is established, on two oil layer evaluation method, developed a set of hanging in the oil plant eight log interactive interpretation system on the processing software, after the trial, the expected effect is obvious.Reservoir parameter model, to collect all oil field based on core analysis data, the well data pretreatment, standardization, core location, layered value basis, different logging series, using correlation analysis regression parameters selection, parameter analysis, multiple regression, model comparison, error and statistical regularity combining test model the accuracy of the method to establish the porosity and permeability model. The permeability model, based on the core permeability parameter distribution characteristics, highlight the permeability mainly section contribution, by using the incremental contribution analysis method to establish models, improves the model precision. Through the model established in the area in the coring wells analysis shows that, the porosity of the average absolute error is less than1%; permeability of the average absolute error is less than half an order of magnitude, and the results of calculation and core permeability statistical distributions are consistent.The oil saturation interpretation model, by core analysis data by regression analysis to establish the shale content interpretation based on the model, according to the rock electricity experiment to determine the m, N, a, B and reservoir and reservoir characteristics, studied10saturation equation, using a variety of calculation results of the model with sealed coring result comparison optimization and determination method, saturation model, using the improved Indonesia formula as the oil saturation calculation model, through the sealed coring data, the average absolute error is less than5%.In the interpretation of water-flooded layer interpretation, from the basic principle, in water flooding and phase permeability experiment based on the analysis of mechanism, water and resistivity variation, establish relative permeability, irreducible water saturation, residual oil saturation calculation model and its classification method. The sealed coring well and infill wells watered-out characteristics as the basis, by analyzing all the logging parameters in different water level of well logging curve of watered-out characteristics, selection of spontaneous potential baseline offset or abnormal, deep resistivity curve shape, resistivity changes in the rate of such parameters as water flooded layer identification of main feature, summed up the different water level qualitative criterion. By theoretical calculation and test data combined method, determine the different water flooding stage of formation water resistivity, sum up water flooded layer formation water resistivity to determine the standard, solve in water flooded layer in the quantitative evaluation of formation water resistivity cannot be determined problem. In the qualitative discrimination on the basis of the water, according to the different stages and different formation water resistivity, using quantitative calculation method to determine the final water flooded...