Diagenetic evolution simulation experiment method for mud shale

Abstract

The invention discloses a diagenetic evolution simulation experiment method for mud shale and belongs to the field of petroleum exploration and development. The diagenetic evolution of a mud shale reservoir is simulated by using the experiment method, and the problem of evolution of organic matters, mineral components and pores in the mud shale reservoir is solved. The method comprises the following main experiment steps: (1) preparing a sample; (2) performing thermal simulation, (3) collecting and analyzing oil gas; (4) performing experiment sample after-treatment; (5) performing different scales and different ways of comprehensive observation research on the evolution of the organic matters of the sample, the diagenesis of inorganic minerals and the development situation of the pores by utilizing a common polarizing microscope, a fluorescent microscope, a laser scanning confocal microscope, a cathode luminescence microscope and a field emission scanning electron microscopy. The method is used for researching the diagenetic evolution of the mud shale reservoir and determining the evolution characteristics of the organic matters, the mineral components and the pores with different lithofacies, different organic matter types and different organic matter maturity stages in the mud shale reservoir, and plays an important role in research of the characteristics of the mud shale reservoir and the characteristics of an oil-gas enrichment rule.

Description

technical field [0001] The invention relates to the geological field of petroleum exploration and development, and is a set of simulation experiment methods aimed at the diagenetic evolution of mud shale reservoirs. Background technique [0002] With the rapid development of unconventional oil and gas exploration and development, especially the in-depth exploration and development of mud shale oil and gas, people pay more and more attention to the research on mud shale reservoirs. Among them, the pore type and pore structure are mud shale One of the key points of reservoir research. Due to the fine particle size of shale reservoir materials and strong sensitivity to temperature, pressure and fluid, its diagenetic evolution is more complicated, which leads to the complexity of its pore types and pore structure characteristics. Therefore, the study of diagenesis It is an important basis for the study of shale reservoirs. [0003] In the past, sandstone reservoirs were the fo...

AI Technical Summary

Problems solved by technology

Due to the fine particle size of mud shale, traditional methods such as magnifying glass and ordinary polarizing microscope cannot effectively observe and study the material composition and diagenesis phenomena