Apparatus and method for simulating water-rock reaction

Abstract

The present invention relates to an apparatus for simulating a water-rock reaction, and a method for simulating a water-rock reaction by using the apparatus. The apparatus comprises: a micro CT scanning system; a reaction kettle arranged inside the micro CT scanning system; a fluid injection system connected to the inlet of the reaction kettle; a fluid ion test analysis system connected to the outlet of the reaction kettle; and a data collecting and processing system for collecting the data of the micro CT scanning system and the fluid ion test analysis system. According to the present invention, the apparatus can monitor the dynamic process of the water-rock reaction, can perform real-time in-situ image monitoring on the water-rock reaction, can real-timely monitor the diffusion distribution trend, the saturation distribution and other parameters of the fluid in the pores, and can provide important scientific significance for the monitoring of the reaction progress of the water-rock reaction experiment system and the exploration of the fluid-rock interaction law; and the method can simultaneously complete image and quantitative calculation, has high real-time online monitoring degree, and is convenient for application promotion.

Description

technical field [0001] The invention belongs to the technical field of water-rock reaction process, and in particular relates to a device and method for simulating water-rock reaction. Background technique [0002] The primary pores of carbonate rocks and the secondary pores formed by dissolution on the surface and during burial are important oil and gas storage spaces. Fluid-rock interaction in deep hydrocarbon-bearing carbonate reservoirs is an important factor affecting reservoir performance. Fluid-rock interaction includes two processes of dissolution and precipitation. Dissolution expands pores to improve rock storage performance, and precipitation reduces pores to reduce rock storage performance. As a porous medium, the development scale of the internal pore space, the degree of influence of the spatial distribution on fluid seepage, the interaction mechanism between fluid and rock, and the material changes and energy changes that occur during the interaction process ...

AI Technical Summary

Problems solved by technology

This method is currently mainly used in static processes. The objects of digitization and visualization are core samples before or after transformation. It is impossible to know the changes of pores and fluids inside the core during the transformation process.

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