Abstract: The present invention discloses a method for overall exploration of a mature exploration area of oil-rich sags, the method including the following steps: building an area-wide seismic sequence framework for a study area based on uniform 3D seismic data of the study area; determining the spatial distribution characteristics of sedimentary reservoirs in the study area by sequence based on the area-wide seismic sequence framework; grading source rocks in the study area by sequence based on the area-wide seismic sequence framework; counting the spatial distribution characteristics of caprocks in the study area; determining a transporting system for the study area based on the unified 3D seismic data of the study area; classifying potential trap areas in the study area based on the spatial distribution characteristics of the sedimentary reservoirs and the spatial distribution characteristics of the caprocks; and deploying the overall exploration of the study area based on the classification of the potential trap a
Abstract: The present invention discloses a method for overall exploration of a mature exploration area of oil-rich sags, the method including the following steps: building an area-wide seismic sequence framework for a study area based on uniform 3D seismic data of the study area; determining the spatial distribution characteristics of sedimentary reservoirs in the study area by sequence based on the area-wide seismic sequence framework; grading source rocks in the study area by sequence based on the area-wide seismic sequence framework: counting the spatial distribution characteristics of caprocks in the study area; determining a transporting system for the study area based on the unified 3D seismic data of the study area; classifying potential trap areas in the study area based on the spatial distribution characteristics of the sedimentary reservoirs and the spatial distribution characteristics of the caprocks; and deploying the overall exploration of the study area based on the classification of the potential trap a
Abstract: A method is disclosed for evaluating and predicting a shale oil enrichment area of a fault lacustrine basin, comprising: obtaining materials and key data; determining a source-reservoir configuration relationship according to a longitudinal superposition relationship of different types of rock in a lithology profile and establishing a single-well lithofacies model; in the single-well lithofacies model, using a dolomite-to-formation ratio and a TOC average value to form a dolomite-to-formation ratio contour map and a TOC contour map, and superposing the dolomite-to-formation ratio contour map, the TOC contour map and a source-reservoir configuration relationship plane distribution map to form a lithofacies plane distribution map; on the basis of the lithofacies plane distribution map, superposing a vitrinite reflectance contour map and a dolomite thickness contour map to obtain a corresponding evaluation and prediction map of the shale oil enrichment area of the fault lacustrine basin.
Type:
Grant
Filed:
August 29, 2018
Date of Patent:
January 29, 2019
Assignee:
Research Institute Of Petroleum Exploration & Development, Dagang Oil Field Of CNPC