High-temperature high-pressure thermal fluid seepage simulation device

Abstract

The invention provides a high-temperature high-pressure thermal fluid seepage simulation device. The high-temperature high-pressure thermal fluid seepage simulation device at least comprises a diagenesis reaction control simulation device, a high-temperature high-pressure pump and a thermal fluid circulation unit. The high-temperature high-pressure pump and the thermal fluid circulation unit are communicated with the diagenesis reaction control simulation device. The diagenesis reaction control simulation device comprises a front cavity, a rear cavity and a connection block connected with the front cavity and the rear cavity. A press rod penetrating the connection block is arranged in the connection block. Two ends of the press rod are connected with two pistons respectively. The ends of the front cavity and the rear cavity are sealed by a front press cap and a rear press cap respectively. The diagenesis reaction control simulation device is communicated with the thermal fluid circulation unit through liquid outlet holes and a liquid inlet hole which are formed in the front cavity, and is communicated with the high-temperature high-pressure pump through an oil inlet hole of the rear press cap. Intelligently-controlled thermostatic sleeves sleeve the diagenesis reaction control simulation device and a circulation container of the thermal fluid circulation unit respectively. The high-temperature high-pressure thermal fluid seepage simulation device can simulate high-temperature high-pressure thermal fluid seepage of the stratum physically, can analyze influence degrees of different influence factors on diagenesis time quantitatively and can be used for production of artificial cores.

Description

technical field [0001] The invention relates to a seepage simulation device, in particular to a diagenesis control factor simulation and reservoir fluid seepage simulation device for experimental research, and belongs to the technical field of diagenesis environment simulation and reservoir seepage physical simulation. Background technique [0002] Rock diagenesis is a very complicated process. Changes in pressure, temperature, fluid properties, clay mineral content, and rock particle composition all affect diagenesis time and diagenesis quality. Artificial cores, especially large-scale artificial cores, are the basic medium for the study of reservoir seepage law, perforation, acid fracturing evaluation, etc. Therefore, it is necessary to quantitatively analyze the influencing factors of diagenesis to improve the preparation efficiency of existing artificial cores. Analyze the influence of different factors on diagenesis time. [0003] At present, the analysis of different ...

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Problems solved by technology

[0003] At present, the analysis of different influencing factors of diagenesis time is mostly carried out through artificial core compaction equipment. Most of the existing artificial core compaction equipment uses hydraulic cylinders to drive piston rods to compact core materials, and artificial cores using artificial rubber materials can be prepared, but this The structure and composition of this artificial core is quite different from that of the real core, and the cement formed by artificial glue is different from the real core of the formation, so it is difficult to simulate the real core, while the artificial core close to the real core does not contain artificial glue and requires high temperature. Compression under high-pressure conditions and the pressing temperature and pressure in the core pressing process change stepwise. The existing artificial core preparation equipment has a long compaction period (more than 10 days) and low efficiency, and the thermal fluid dynamic change cannot be simulated during the compaction process. Cement chemical reaction, so it is difficult to quantitatively analyze the influencing factors of diagenesis

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