Construction Method of 3D Conceptual Model of Trap and Reservoir

Abstract

The invention proposes a method for constructing a three-dimensional conceptual model of traps and reservoirs, constructing fault lines, assigning elevation values ​​to fault lines, and using fault lines to create fault planes, converting fault planes into faults in corresponding models; creating fault-free According to the fault throws of different faults, the corresponding structural planes are constructed. According to the faults, the structural planes are divided into the structural planes of each fault block. The sandstone top surfaces of different fault blocks are combined into one structural plane. Layer top structural map; set sandstone pinch-out area, construct sandstone isopach map, use sandstone top surface and sandstone isopach map to construct sandstone bottom structural surface; use caprock top surface, sandstone top surface and sandstone bottom surface to construct three-dimensional trap structure The three-dimensional lithological attributes are constructed in the model; on the basis of the three-dimensional trap structure model, the oil-water interface is set, and the corresponding lithological attributes and fluid attributes are created. The above method can quickly and accurately establish three-dimensional trap and reservoir models.

Description

technical field [0001] The invention relates to the technical field of geology, in particular to a method for constructing a three-dimensional conceptual model of traps and oil reservoirs. Background technique [0002] In traditional oil and gas geology teaching, traps and reservoirs are the most important teaching contents, but the types and structural characteristics of traps and reservoirs are displayed by plan and section drawings. In the absence of a three-dimensional conceptual model of traps and reservoirs, students can only rely on three-dimensional spatial imagination for the three-dimensional spatial structure of traps and reservoirs, which is difficult to learn, and there are great difficulties in the communication between teachers and students, especially It is aimed at fault-block, lithologic pinch-out and unconformity traps and reservoirs. There are three difficulties in the traditional trap and reservoir 3D conceptual model establishment process. Reservoir b...

AI Technical Summary

Problems solved by technology

There are three difficulties in the establishment of traditional 3D conceptual models of traps and reservoirs. First, it is difficult to quickly create fault surfaces with a certain dip angle, sandstone reservoir top interfaces of different fault blocks and The bottom interface of reservoirs with different shapes, secondly, it is difficult to deal with the cutting relationship between faults and the contact relationship between strata, including the setting of pinch-out zones, and the treatment of denudation and unconformity; Based on the model, it is difficult to simply and quickly construct the lithology and fluid attribute models of the 3D concept model of traps and reservoirs

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