An experimental device and method for measuring two-phase flow containing fine particles in a thin tube network

Abstract

The present invention discloses an experiment apparatus and an experiment method for measuring a fine-particle-containing two-phase flow in a thin pipe network. The experiment apparatus comprises a gas supply and liquid supply module, a thin pipe network module and a two-phase flow measurement module, wherein the gas supply and liquid supply module comprises a reaction kettle, a gas pump and a hydraulic loading system, the thin pipe network module comprises a plurality of hollow spheres with different diameters and a plurality of thin pipes with different diameters and different lengths, eachsphere is provided with at least two through holes, the plurality of the spheres and the plurality of the thin pipes are connected at intervals in a sleeved manner to form a net-like branch structurediffusing from the head end to the tail end, the two-phase flow measurement module comprises a gas flow rate measurement module, a drying system and a fluid and fine particle volume measurement module, the gas flow rate measurement module is arranged at one end of the drying system, the fluid and fine particle volume measurement module is arranged at the other end of the drying system, the outletof the reaction kettle is communicated to one sphere at the head end in the thin pipe network module through the thin pipe, the hydraulic loading system and the gas pump are communicated to the outletof the reaction kettle, the thin pipe at the tail end of the thin pipe network module is communicated to the drying system, and the outlet ends of each thin pipe at the tail end are respectively provided with a valve.

Description

technical field [0001] The invention belongs to the field of unconventional oil and gas development, and in particular relates to an experimental device and an experimental method for measuring two-phase flow containing fine particles in a fine pipe network. Background technique [0002] The migration of fine particles in porous media is a key engineering and scientific problem that needs to be solved urgently in the development of unconventional oil and gas. For example, in artificial fracturing reservoir reconstruction technology, it is necessary to transport fine particles, also called proppants, to fractures. The migration and laying in the middle, the support maintains the conductivity of the crack. In the process of unconventional oil and gas extraction, fine particles in the reservoir migrate to the wellbore, and the reservoir is depleted or blocked, resulting in production stoppage. The migration of fine particles in porous media is a typical two-phase flow problem....

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Problems solved by technology

At present, there is still a lack of studies considering the relevant fine particle transport mechanism.

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