An experimental device for mass-separation and directional fracturing

Abstract

The invention relates to a non-homogeneity layering injection oriented fracturing experimental device. The experimental device solves the problems of oriented fracturing in the displacement process and achieves the aim of the controllable fracturing degree and fracturing direction, and the accuracy and comprehensiveness of the indoor experimental technique are improved. The non-homogeneity layering injection oriented fracturing experimental device comprises a barrel, a pressure-resisting sealing rubber sleeve, a sealing pressing ring, adjustable plugs with channels, core fracturing devices and plug adjusters. The core fracturing devices are screwed in the channels of the adjustable plugs, fracturing heads of the core fracturing devices are in contact with the surface of a core in a bare core model, the fracturing degree of the core fracturing devices is adjustable, and the inclination angles of the fracturing heads of the core fracturing devices are adjustable.

Description

technical field [0001] The invention belongs to the technical field of oil and gas field development simulation equipment, and in particular relates to an experimental device for mass-separation injection and directional fracturing. Background technique [0002] A series of incompatibility has appeared in the general injection technology in oilfield exploitation. High-fraction and high-concentration chemical agents are easy to block relatively low reservoirs and cause mining difficulties. That is, in the development process of multi-layer heterogeneous reservoirs, the heterogeneity of the reservoir is aimed at single-layer injection of matching chemical agents, and through the refinement of the stratification system, the chemical agents are screened for different reservoirs, and the stratification is carried out. Mass injection and mass injection technology has been practiced in the actual field test and achieved good results. The test proves that layered and mass injection ...

AI Technical Summary

Problems solved by technology

In actual mine field tests, measures such as directional fracturing are often implemented on medium and low permeability layers during the layered injection process. The fracturing measures and layered injection are carried out continuously, and the experimental scheme disclosed in the above-mentioned prior art destroys the experimental scheme. continuity and integrity, it cannot simulate the actual fracturing mining in the field test, and cannot provide guidance and assistance for on-site practice

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