An experimental device for simulating the stimulation of rock reservoirs by hydrocarbon-generating fluids

Abstract

The invention discloses a simulation experiment device for the transformation effect of hydrocarbon-generating fluids on rock reservoirs, which comprises a hydrocarbon-generating system, a hydrocarbon-discharging system, a reservoir reforming system and a product separation and collection system connected in sequence, and a hydrocarbon-generating system and a hydrocarbon-discharging system respectively connected The injection system of the hydrocarbon system, wherein the hydrocarbon generation system is used to generate fluid hydrocarbon products; the reservoir stimulation system is used to accommodate core samples and receive fluid hydrocarbon products discharged from the hydrocarbon expulsion system so that the fluid hydrocarbon products can act on the core Sample; product separation and collection system is used to separate and collect the products discharged from the reservoir stimulation system. The present invention combines the hydrocarbon generation process, hydrocarbon expulsion process and reservoir transformation process, sets formation temperature and pressure according to actual geological conditions in the laboratory, and more realistically simulates the migration of oil and gas generated by source rocks to rocks under geological conditions. After the reservoir, the transformation of the reservoir, such as dissolution and densification, provides an effective experimental method for the prediction and evaluation of high-quality rock reservoirs.

Description

technical field [0001] The invention belongs to the field of petroleum and natural gas geological experiment research, and in particular relates to a simulation experiment device for the reformation effect of a hydrocarbon-generating fluid on a rock reservoir. Background technique [0002] In recent years, with the deepening of research on carbonate reservoirs, the formation and preservation mechanism of pores in ultra-deep marine carbonate reservoirs are still being explored; how to simulate the migration of hydrocarbon-generating fluids (oil and gas) to The process of carbonate reservoir and its transformation effect on the reservoir have become the key to study the mechanism of high-quality carbonate reservoir. Many researchers have carried out some carbonate rock dissolution simulation experiments, but the simulated experimental fluid mainly uses artificially configured CO. 2 Fluid, Acetic Acid Fluid, H 2 S solution and crude oil, rather than hydrocarbon fluids generat...

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Problems solved by technology

The shortcoming of this device is: the fluid is mainly filled with carbon dioxide gas which is continuously dissolved in the aqueous solution in the kettle body, so that the system is maintained in a constant weakly acidic environment. The carbonate rock dissolution simulation experiment carried out did not generate or discharge oil gas The device cannot effectively reflect the transformation effect of hydrocarbon-generating fluid products on the reservoir during the natural evolution process under geological boundary conditions

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