Manual shale physical model and manufacturing method and application thereof

Abstract

The invention provides a manual shale physical model and a manufacturing method and application of the manual shale physical model. The manufacturing method of the manual shale physical model includes the first step of mixing adhesives and stone powder evenly, wherein the adhesives are epoxy resin adhesives, the stone powder comprises 10%-70% of quart, 10%-80% of kaoline, 4%-25% of organic carbon powder and 3%-10% of calcite, and the use amount of the adhesives is 5%-35% of the total mass of the stone powder, the second step of filling a mould with mixtures of the adhesives and the stone powder, placing and fixing the mould on a pressure gauge horizontally, adjusting the perpendicular pressure intensity to 80-300 MPa, fixedly placing the mould for more than 24 hours for preliminary solidifying, and the third step of demoulding, drying a shale sample subjected to preliminary solidifying at the temperature ranging from 30 DEG C to 50 DEGC and obtaining the manual shale physical model. The obtained manual shale physical model is compact, has specific porosity and density, has anisotropic characteristics, has transverse isotropic characteristics and can provide a reliable basis for comparison and verification of research results of actual shale reservoir strata.

Description

technical field [0001] The invention relates to an artificial shale physical model and its manufacturing method and application, belonging to the field of geophysical research of oil and gas exploration and development. Background technique [0002] Shale is a kind of sedimentary rock with laminae and lamellar structure composed of fine-grained clastics with a particle size of less than 0.004 mm, clay minerals, and organic matter. Its composition is complex. In addition to clay minerals, it also contains many clastic minerals and Authigenic minerals, etc., and there are large differences in different regions. Shale is widely distributed in nature, and more than 60% of sedimentary rocks are shale. Common shale types include black shale, carbonaceous shale, oil shale, siliceous shale, iron shale, calcareous shale, sandy shale, etc. Normally, the porosity of shale is between 2% and 15%, and the permeability is less than 1mD, which is a typical low porosity and low permeabilit...

AI Technical Summary

Problems solved by technology

However, the main problems of this sintering method are: the yield of the sintering method is low, and the fragmentation is relatively serious; the density of the prepared sample is too small, and the porosity and permeability are too large; it is difficult to add organic components in the later stage of the sintering method. Big

This method is also difficult to produce a petrophysical model with brittle characteristics of low Poisson's ratio and high elastic modulus

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