Dynamic filtration instrument for fracturing acidizing working fluid

Abstract

The invention discloses a dynamic filtration instrument for a fracturing acidizing working solution, which comprises an injection system and an outlet metering system, wherein the output end of the injection system is connected with a temperature and pressure test control system; a model system is arranged in the temperature and pressure test control system; the outlet metering system is connectedto the input end of a back pressure control system; and the output ends of the injection system, the temperature and pressure test control system, the model system, the outlet metering system and theback pressure control system are electrically connected with the input end of the data acquisition system through wires. The container, the clamper and the corresponding pipe valve piece pass througha constant-temperature box system, the whole system reaches the simulated formation temperature condition, various experiments are carried out, the following parameters: the filtration coefficient, the filtration speed, the permeability damage rate, the filtrate invasion depth and the like, can be measured through a dynamic or static method, and the formation condition can be simulated to evaluate the permeability damage of working fluid such as fracturing fluid and the like to the formation.

Description

technical field [0001] The invention relates to the technical field of a dynamic fluid loss testing device for fracturing fluid, in particular to a dynamic fluid loss instrument for fracturing and acidizing working fluid. Background technique [0002] The dynamic fluid loss tester for fracturing and acidizing working fluid is mainly used for dynamic fluid loss testing of fracturing fluid. The core is held by a core holder, and one end of the core is exposed to the fracturing fluid. The fracturing fluid shears and flows on the end surface of the core. At the same time, a filter cake is formed on the end face of the core under the action of pressure difference, and part of the fracturing fluid seeps out from the other end of the core through the filter cake. The experiment can test the influence of different fracturing fluid systems and additives on the fluid loss of fracturing fluid. The experimental equipment is required to be able to measure the dynamic fluid loss of fract...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a dynamic fluid loss instrument for fracturing and acidizing working fluid, which solves the problem that the existing general dynamic fluid loss instrument for fracturing and acidizing working fluid cannot test the impact of different fracturing fluid systems and additives on fracturing fluid filtration. At the same time, the problem of dynamic fluid loss measurement of fracturing fluids under high temperature and high pressure conditions cannot be achieved during the experiment

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