Experimental device and method for energy-gathering miscible fluid and rock mass cracking reaction flow

Abstract

The invention discloses a cracking reaction and flowing experimental device for energy-gathering miscible fluid and rock mass and a method based on the experimental device, and relates to the field of unconventional oil and gas resource development. The device is characterized in that a CO2-based nano energy-gathering miscible fluid generation unit, a mineral storage fluid simulation generation unit, a gas-solid-liquid separation unit, a temperature-seepage measurement unit and an electric spark ignition control unit are connected with a conventional triaxial stress loading unit respectively for a high-temperature cracking reaction-flowing-stress coupling experiment on a CO2-based nano energy-gathering miscible fluid and reservoir rock mass. The method comprises the following steps: 1, mounting a core; 2, loading prestress; 3, injecting a mineral fluid; 4, injecting the CO2-based nano energy-gathering miscible fluid; 5, performing gas-solid-liquid separation; 6, measuring temperature and permeability; 7, igniting the CO2-based nano energy-gathering miscible fluid; 8, acquiring data; 9, repeating the experiment. By means of the device, a high-temperature and high-pressure environment can be generated by the CO2-based nano energy-gathering miscible fluid through a reaction to promote mineral fluid cracking; the reaction-flowing-stress coupling experiment can be finished; the mineral fluid in the core can be decomposed into small molecular substances, so that the displacement effect is improved.

Description

technical field [0001] The invention relates to the field of development of unconventional oil and gas resources, in particular to an experimental device and method for energy-gathering miscible fluid and rock mass cracking reaction flow. Background technique [0002] my country is very rich in tight oil resources, but the exploration and development of tight oil and related research are still in the preparation stage. Therefore, it is necessary to carry out experimental research to improve the development effect of tight oil. For mineral resources such as heavy oil and tight oil that are difficult to exploit deep, in-situ pyrolysis mining has become a very potential mining method. The process involves chemical reaction, fluid flow, material migration and stress field coupling. Rock mass reaction-flow- The stress coupling mechanism is very complex. [0003] At present, the test devices used for basic experiments and theoretical research of tight oil recovery have single fu...

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Problems solved by technology

[0003] Currently, the test devices used for basic tests and theoretical studies of tight oil recovery have single functions, and the high-temperature cracking method mainly uses hot steam, and its cracking efficiency is not high, so the development of new technologies is awaited

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