Downhole formation leakage emergency treatment test device

Abstract

The invention discloses a loss emergency treatment testing device for an underground stratum. The loss emergency treatment testing device comprises a heating and agitating feed system and a rock coresystem, wherein a main pipeline between the agitating feed system and the rock core system is provided with a liquid feed valve and a liquid discharge valve in sequence; a liquid suction and dischargepressurization system is also arranged between the liquid feed valve and the liquid discharge valve; the liquid suction and discharge pressurization system comprises a liquid suction and discharge cylinder and a hydraulic module for controlling leak stopping fluid to come in and out of the liquid suction and discharge cylinder; the device also comprises a control system which is connected with acontrolled end of the hydraulic module, a controlled end of the heating and agitating feed system and a controlled end of the rock core system respectively. The loss emergency treatment testing devicehas the advantages that leak stopping fluid is obtained from the heating and agitating feed system; the liquid suction and discharge pressurization system is used for providing power for the leak stopping fluid to flow from the main pipeline to the rock core system. The liquid suction and discharge pressurization system and the rock core system in the device are separately arranged; an original device with an integrated structure is replaced, and in this way, a rock core can be better replaced.

Description

technical field [0001] The invention relates to the field of experimental research on the treatment of underground formation leakage phenomena, in particular to an emergency treatment test device for underground formation leakage. Background technique [0002] The downhole formation loss emergency treatment test device is a new simulation test device for simulating the underground drilling fluid loss and plugging process in the ground laboratory during the drilling process. It mainly uses artificial cores on the ground to simulate the fractured drilling fluid loss under high temperature and high pressure. , pore-type drilling fluid loss, hole-type drilling fluid loss, fracture-cavity composite drilling fluid loss, etc.; through different formulations of plugging fluid flowing through artificial cores to simulate underground plugging conditions, and test different plugging materials The plugging ability in different cores, find out their best combination, and provide correct ...

AI Technical Summary

Problems solved by technology

[0003] In the existing technology, the leak plugging instrument is an integrated structure, and the hydraulic cylinder separates the hydraulic oil and the leak plugging fluid through the push rod, so that the hydraulic oil in the hydraulic cylinder may mix with the leak plugging fluid, resulting in cross contamination

[0004] As a test device, the core needs to be replaced frequently. The existing plugging instrument has an integrated structure, which is inconvenient for the replacement of the core.

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