The Application Of Seismic Reservoir Prediction In Xinnong Area Of Three Reservoirs In Qianjiang Formation

Seismic structural interpretation and reservoir prediction is a basic and important step of seismic exploration. Reservoir prediction based on the achievement of seismic structural interpretation and in combination with logging data for fine reservoir characterization.The paper based on actual project, on the basis of three dimensional seismic fine structure interpretation and combining with the logging data, through rock physics statistics for seismic reservoir and reservoir prediction, portrays the favorable zone, sand body thickness and oil sand body distribution and its physical properties and so on. Its guiding ideology is based on the results of three dimensional seismic interpretation,combine with Attribute analysis, coherence analysis, time slice and logging data to determine the accurate distribution of strata structure on the macro Through the drilling and logging data statistics to statistical petrophysical parameters, Analysis the lithology of the research formation Physical properties and impedance to find the possible relationship. Analysis summarizes the mathematical laws of rock physical parameters and then make sure the method to determine the reservoir inversion.This paper takes the third formation, Qianjiang strata, Xinnong depression for example. Based on the the available seismic data, combine with drilling, logging data and various analysis and assay data material, use seismic interpretation on the formation, structure, trap identification and reservoir prediction research, combined with the actual hydrocarbon exploration in the development of the fracture structure and evolution characteristics, the reservoir type and distribution, oil and gas accumulation conditions, accumulation pattern and enrichment regularity and zones of the petroleum traps evaluation research put forward, based on the favorable exploration target. The main research contents for:1) fine contrast and interpretation of the objective intervalMake stratigraphical classification and correlation, using drilling, well logging and seismic data to establish stratigraphic framework. And finally interpret2objective intervals, and plot corresponding t0and structural maps.2) Study of seismic multi-attributeDiscusses the seismic multi-attribute analysis and problems that should be paid attention to in practical application, and through optimizing the formation in the studied area sensitive seismic attributes, select the appropriate time window, in the study area for the seismic attribute extraction and analysis of geological significanc. 3) Seismic reservoir predictionTo carry out the comprehensive geological, well logging and seismic data of the reservoir prediction research, And then make summary of a set of idea and method which under the constraints of well logging curve data, using seismic inversion technology to launch reservoir study. Through the petrophysical parameters study, we found that the normal impedance inversion can identify sand and mud rock in Yuduo-Huazhuang area, so the CSSI method is selected, and then get petrophysical parameters.4) reservoir predictionOn the basis of reservoir prediction and through the rock physics statistics, it is show that in the curve of rock electrical properties can do it by sandstone distinguish sandstone layer and water layer, so as to provide the basis for lithologic oil reservoir prediction and achieve the goal of predicting oil and gas area.