Device for evaluating elastic property of granular profile control agent

Abstract

The invention relates to the technical field of oil production engineering and belongs to a device for evaluating the elastic property of a granular profile control agent, thereby overcoming the defects caused by the fact that existing equipment independently investigates the strength of via holes in the aspect of evaluating the granular performance. The device is composed of a visual cylinder (1), a high-precision displacement detection device (2), a piston rod (3), a piston (4), a control valve (5), a four-way joint (6), a data transmission line (7), a data acquisition device (8) and an iscopump (9). The device has the advantages that the defect that the plugging capacity parameter of the particle profile control agent is single only through strength evaluation is overcome, and technical support is provided for evaluation of the deep migration capacity of the granular profile control agent.

Description

technical field [0001] The invention relates to the technical field of oil recovery engineering, and belongs to a device for evaluating the elastic performance of a particle profile control agent. Background technique [0002] During the migration process of the formation, particles pass through pore-throats in several forms, such as crushing and deformation, and the most ideal way is to deform and pass through pore-throats. The plugging ability of the deformed particles is better than that of the crushing method. The particles deformed and passed through the pore throats can migrate to the deep part of the oil layer due to their relatively strong elasticity, thereby forming effective plugging and adjusting the profile. The broken particles have strong rigidity and poor elasticity, and the subsequent fluid can seep through the gaps between the particles, and once the formation is blocked, it is difficult to restart, which may easily lead to reservoir damage. [0003] Theref...

AI Technical Summary

Problems solved by technology

The traditional compressive strength of vias is only a single description of the maximum displacement pressure of the broken vias of particles, and the pressure of particles fluctuates greatly during the measurement process, which cannot fully characterize the elastic side of particles

[0004] In order to fully realize the deformation performance of the simulated particle profile control agent in the deep formation migration, a device for evaluating the elastic properties of the particle profile control agent was invented, which solves the problem of traditional evaluation of particle strength and particle strength by means of through-hole compressive strength and artificial rolling. The problem with elastic parameters

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