Crystal-scale dolomite corrosion pore formation evolution simulation method and device

Abstract

The invention discloses a crystal-scale dolomite corrosion pore formation evolution simulation method and device. The method comprises the following steps: preparing a dolomite crystal sample; carrying out a corrosion simulation experiment on the dolomite crystal sample by utilizing a pre-prepared fluid for a simulation experiment; collecting a crystal characteristic image of the dolomite crystal sample before a corrosion simulation experiment and a plurality of crystal characteristic images after multiple corrosion simulation experiments; and according to the crystal characteristic image of the dolomite crystal sample before the corrosion simulation experiment and a plurality of crystal characteristic images after multiple corrosion simulation experiments, determining evolution characteristic information in the dolomite corrosion pore forming process. According to the method, the formation process of the corrosion pores can be accurately analyzed, the development law of the corrosion pores can be known, and the reservoir prediction reliability can be improved.

Description

technical field [0001] The invention relates to the technical fields of geological exploration and oil and gas exploration, in particular to a crystal-scale method and device for simulating the formation and evolution of dolomite dissolution pores. Background technique [0002] This section is intended to provide a background or context to embodiments of the invention that are recited in the claims. The descriptions herein are not admitted to be prior art by inclusion in this section. [0003] Due to the high chemical activity of carbonate rocks, in addition to sedimentary primary pores, dissolution pores are very important components of carbonate rock reservoir space. Similarly, a large number of outcrop and drilling core research examples show that dissolution pores or vugs can be relatively developed in dolomite, and oil and gas production reveals that the development of dissolution vugs is one of the important factors controlling oil and gas production. However, due to...

AI Technical Summary

Problems solved by technology

[0006] In the embodiment of the present invention, a method for simulating the formation and evolution of dolomite dissolution pores at the crystal scale is provided to solve the technical problem that the existing dissolution experimental methods cannot analyze the formation process and development mechanism of dissolution pores. The method includes: preparing Dolomite crystal samples; use pre-configured fluids for simulation experiments to conduct dissolution simulation experiments on dolomite crystal samples; collect crystal feature images of dolomite crystal samples before dissolution simulation experiments and multiple crystals after multiple dissolution simulation experiments Characteristic images: According to the crystal characteristic images of dolomite crystal samples before the dissolution simulation experiment and multiple crystal characteristic images after multiple dissolution simulation experiments, the evolution characteristic information during the formation of dolomite dissolution pores is determined

[0007] The embodiment of the present invention also provides a crystal-scale dolomite dissolution pore formation and evolution simulation device to solve the technical problem that the existing dissolution experiment method cannot analyze the formation process and development mechanism of dissolution pores. The device includes: The experimental sample preparation module is used to prepare dolomite crystal samples; the dissolution simulation experiment module is used to conduct dissolution simulation experiments on dolomite crystal samples using pre-configured simulation experiment fluids; the crystal feature image acquisition module is used to collect dolomite crystal samples. The crystal feature image of the rock crystal sample before the dissolution simulation experiment and multiple crystal feature images after multiple dissolution simulation experiments; the evolution feature information determination module is used to base the crystal feature image and multiple crystal feature images of the dolomite crystal sample before the dissolution simulation experiment Multiple crystal characteristic images after the first dissolution simulation experiment, to determine the evolution characteristic information during the formation of dolomite dissolution pores

[0008] In the embodiment of the present invention, a computer device is also provided to solve the technical problem that the existing dissolution experiment method cannot analyze the formation process and development mechanism of the dissolution hole. The computer device includes a memory, a processor and a A computer program that can run on a processor. When the processor executes the computer program, any one of the above crystal-scale simulation methods for the formation and evolution of dolomite dissolution pores can be realized.

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