Solid-liquid mixing device

Abstract

The invention provides a solid-liquid mixing device which is used for mixing a fracturing fluid. The solid-liquid mixing device contains a low-temperature and pressure resistant enclosed mixing container, a solid introducing port which is arranged on the mixing container and used for introducing solid particles of the fracturing fluid into an inner chamber of the mixing container, a liquid introducing port which is disposed on the mixing container and used for introducing a base solution of the fracturing fluid into the inner chamber, and a solid-liquid outlet which is arranged on the mixing container and used for exporting the fracturing fluid out of the inner chamber. According to the solid-liquid mixing device provided by the invention, by the adoption of the low-temperature and pressure resistant enclosed mixing container, the solid-liquid mixing device can meet mixing requirements for low temperature under pressure; and as the mixing container is respectively provided with the solid introducing port, the liquid introducing port and the solid-liquid outlet, the process of putting the solid particles and the base solution into the mixing container and the process of exporting the fracturing fluid out of the mixing container will not interfere with each other, and mixing of the fracturing fluid can be continuously carried out.

Description

technical field [0001] The invention relates to the technical field of solid-liquid mixing in the petrochemical industry, and more specifically relates to a solid-liquid mixing device. Background technique [0002] During oil testing or production of oil and gas wells, the production of oil and gas wells will be low due to pollution near the wellbore (drilling, cementing, well washing and killing processes will cause pollution) or low original permeability of the formation. This problem can be solved by fracturing technology. [0003] Fracturing technology refers to a method of using liquid pressure to form cracks in oil and gas reservoirs in the process of oil or gas production. The pressure of the absorption capacity of the reservoir is injected into the reservoir to form cracks in the reservoir, thereby achieving the purpose of increasing production and injection. Among them, the fracturing fluid is made by mixing liquid as a solvent (generally called base fluid) and so...

AI Technical Summary

Problems solved by technology

[0005] The solid-liquid mixing equipment with this structure is only suitable for mixing liquids and solids at normal temperature and pressure, and it cannot meet the mixing requirements at low temperature and pressure, so it cannot mix fracturing fluids with liquefied gas as the base fluid, such as Fracturing fluid formed by mixing solid particles with liquid carbon dioxide or liquefied petroleum gas (propane), and this mixing device is repeatedly operated in the mixing tank, which cannot be continuously mixed

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