High temperature and high pressure foam fracturing fluid filtration damage test system

Abstract

The invention discloses a high-temperature high-pressure foam fracturing fluid leak-off damage experiment system and belongs to the technical field of fracturing fluid leak-off damage experiment systems. The high-temperature high-pressure foam fracturing fluid leak-off damage experiment system comprises a liquid supply unit for preparing high-temperature high-pressure foam fracturing fluid, a power unit for storing and conveying the high-temperature high-pressure foam fracturing fluid and a leak-off damage unit for conducting leak-off amount and damage testing. The experiment system is reasonable in design and capable of effectively simulating dynamic and static leak-off and damages of the foam fracturing fluid under an actual construction condition and capable of testing influences on the dynamic and static leak-off property of the fracturing fluid of different fracturing fluid systems, additives and the like and influences on the dynamic and static leak-off property and core damages of temperature, pressure and foam quality.

Description

technical field [0001] The invention belongs to the technical field of a fracturing fluid filtration damage test system, and in particular relates to a high-temperature and high-pressure foam fracturing fluid filtration damage test system. Background technique [0002] In the fracturing process of oil and gas reservoirs, the leakage of fracturing fluid to the formation is inevitable. Due to the leakage of fracturing fluid, the fracturing efficiency is reduced and the fracture volume is reduced. At the same time, the fracturing fluid will produce certain Therefore, the study of the filtration damage characteristics of fracturing fluid is essential for the calculation of fracture geometric parameters and the understanding of formation damage. Foam fracturing fluid is a new type of fracturing fluid developed in recent years for the stimulation of low-pressure and low-permeability oil and gas reservoirs. Its biggest features are easy flowback, less fluid loss, and low friction. ...

AI Technical Summary

Problems solved by technology

Foam fracturing fluid is a new type of fracturing fluid developed in recent years for the stimulation of low-pressure and low-permeability oil and gas reservoirs. Its biggest features are easy flowback, less fluid loss, and low friction. The shear rate has a significant impact on the rheological properties of the foam fracturing fluid, and in the actual fracturing process, the foam fracturing fluid is in a state of high temperature, high pressure, and high shear rate, so the fluid loss characteristics of the foam fracturing fluid The test must be carried out under high temperature, high pressure, and dynamic shear conditions, so as to reflect the real fluid loss and damage conditions under fracturing construction conditions. Most of the existing foam fracturing fluid fluid loss damage evaluation systems are based on conventional water-based fracturing fluids The design of the fluid loss damage system cannot simulate the dynamic fluid loss and damage of foam fluid under dynamic shear conditions, and the temperature and pressure range of the test is limited, so it is not suitable for the evaluation of fluid loss damage of high temperature and high pressure foam fracturing fluid

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