Research On Seismic Reservoir Prediction Method For Unconventional Reservoirs And Its Application

in the new century,unconventional oil and gas exploration and development have achieved a strategic breakthrough,and shale oil and gas unconventional oil and gas systems have become a new area for the replacement of oil and gas exploration resources.In the energy structure,the status of unconventional oil and gas is very important.Reservoir lithology,physical properties and oil content are the main parameters of reservoir description.Seismic exploration information is the main method for reservoir seismic prediction.It is an integrated well information,seismic information and other data to investigate various characteristics of reservoirs,such as lithology and oiliness.For some special and complex reservoirs,reservoir seismic prediction technology is a basic and important method.In this paper,the Xinjiang tight oil project is taken as an example to elaborate the unconventional prediction methods for tight reservoirs.It has the characteristics of low porosity and low permeability,weak sensitivity of geophysical parameters,and LATELA in dense reservoirs.LLY is stable within a certain range,but dense reservoirs are more heterogeneous.This is difficult to predict.In view of the particularity of heavy oil and the related factors that affect the conditions for the enrichment of heavy oil,the wells in the cloud are rich in oil and oil through logging and single well analysis.Using geophysical methods,geophysical methods were used to comprehensively analyze the geophysical methods of tight oil reservoirs,the geophysical response characteristics of marble,reservoir characteristics,and evaluation indicators for “sweets”.E heavy oil.Joint system research.Based on the regional geological background,this paper systematically analyzes the Permian Fengcheng reservoirs in the Wuxi area by using Wuxia continuous profile geological,seismic,well logging,and core analysis data.Based on the complexity of the lithology of the Miyunxian reservoir in the third member of the Permian Fengcheng Formation and the main indicators of TOC,brittleness,and fracture development,the main indexes for the evaluation of heavy oil geology were conducted.Combined with the research results of previous source rocks,the source rock,reservoir thickness,and reservoir brittleness were respectively set to three."Sweet spot" comprehensive optimizationIn this paper,based on the study of methods and the characteristics of actual data,this paper puts forward the geophysical prediction method and working process for the prediction of dense oil desserts in the study area,and forecasts the Permian dense oil desserts in the study area,and divides the reservoir with high quality dessert distribution area,providing a scientific basis for the exploration of the dense oil in this area.