1. Overview
Shale gas mainly occurs in the free state and adsorption state and in the matrix and fracture pores. Shale gas reservoir has the characteristics of low porosity and permeability, and the unique occurrence mechanism and double pore structure of shale gas determine the complexity and difficulty of shale gas development. The device establishes the characteristics of shale gas in the reservoir drilling process, simulates the analysis, diffusion and seepage process of shale gas, and provides a certain parameter basis for the prediction of well wall stability and productivity in the process of shale gas exploitation.
Device function:
1. Capable of forming and measuring shale water saturation under reservoir conditions;
2, injection of carbon dioxide huff and puff, injection of carbon dioxide replacement of methane, injection of nitrogen huff and puff and displacement and other laboratory tests;
3. Water flooding experiment;
Main technical indicators of 2.
1. Working pressure: 50MPa;
2. Working temperature: room temperature ~ 100 ℃;
3. Sample specification: Φ25 × 25~100mm,Φ38 × 25~100mm;