Experimental device and experimental method for expansion performance of self-expansion sand control screen

Abstract

The invention provides an experimental device and an experimental method for the expansion performance of a self-expansion sand control screen. The device comprises a cylinder body and the self-expansion sand control screen located in the cylinder body, and the self-expansion sand control screen comprises a base tube and a self-expansion sleeve sleeved on the base tube; the cylinder body is provided with a fluid inlet and a measuring port; the measuring port is provided with a measuring rod and a displacement sensor connected with the measuring rod; and a base is arranged at the open end of the cylinder body, the base is in sealing connection with the end portion of the base tube, and the base is provided with a fluid outlet. The device and the method can be used to measure the expansion performance of the self-expansion material, also can be used to measure the compressive strength and the sand blocking precision of the self-expansion material, so the proper self-expansion material can be well selected to ensure the working states of the self-expansion sand control screen under different conditions, thereby the success rate of field application of a self-expansion sand control screen well completion technology is increased.

Description

technical field [0001] The invention relates to the field of sand control well completion for oil, gas and water wells, in particular to a self-expanding sand control screen expansion performance experimental device and an experimental method thereof. Background technique [0002] Self-expanding sand control screen belongs to a new type of sand control screen, which is a kind of sand control screen that expands the expansion parts in the screen due to temperature, pressure or fluid, etc., and fills the space between the screen and the well wall. During the well completion process, the completion string of the compressed self-expanding sand control screen is lowered into the horizontal interval by using the drill pipe or tubing, and the suspension packer is set and suspended, and the mud cake is cleaned by the positive circulation completion fluid, and the near-wellbore zone is released. blockage, improve permeability, and melt the outer layer of the self-expandable sand cont...

AI Technical Summary

Problems solved by technology

This new type of self-expanding sand control screen not only needs to test its sand retaining accuracy, anti-clogging ability and expansion performance, but also needs to test its expansion performance. However, there is no experimental device for testing the expansion performance of self-expanding sand control screen. method

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