An experimental device for evaluating the anti-extrusion strength of sand control screen

Abstract

The invention relates to an experimental device for evaluating the anti-extrusion strength of a sand control screen, which includes an autoclave, the autoclave includes an autoclave body, and the autoclave body is a tubular structure with an inner diameter larger than the outer diameter of the sand control screen to be evaluated. The openings at both ends of the autoclave body can be detachably connected to the first sealing cover and the second sealing cover, and an installation groove is provided inside the first sealing cover for fixing one end of the sand control screen to be evaluated, and the other end of the sand control screen to be evaluated A sealing gland is fixedly installed, the outer surface of the sand control screen to be evaluated is coated with sealant, and the middle part of the first sealing cover is pierced with a drainage tube. One end of the drainage tube is located inside the sand control screen to be evaluated, and the other end is located in the liquid receiving pool; The inside of the autoclave body is connected to the water outlet of the water injection pump through a pipeline, and the water inlet of the water injection pump is connected to the water outlet of the water storage tank through a pipeline; the inside of the autoclave body is connected to the high-pressure pump through a pipeline; A pressure relief valve communicating with the interior of the autoclave body; a pressure gauge communicating with the interior of the autoclave body is provided on the autoclave body. The invention can reflect the anti-extrusion strength of the sand control screen pipe.

Description

technical field [0001] The invention relates to the technical field of petroleum exploitation, in particular to an experimental device for evaluating the anti-extrusion strength of a sand control screen pipe. Background technique [0002] The sand control screen works at the bottom of the well thousands of meters deep, and the comprehensive effect of formation rock, formation fluid and structural movement in its surrounding environment makes it bear huge external pressure. When the external pressure on the sand control screen exceeds the anti-extrusion strength of the sand control screen, the sand control screen will be irreversibly damaged, and it has been found in practice that the sand control screen is usually damaged due to extrusion. [0003] At present, when selecting sand control screens, the main consideration is the initial production and sand output of sand control, without considering the damage of sand control screens in the long-term production process and the ...

AI Technical Summary

Problems solved by technology

[0003] At present, when selecting sand control screens, the main consideration is the initial production and sand output of sand control, without considering the damage of sand control screens in the long-term production process and the output and sand output after damage, which is not conducive to selection. It is not conducive to improving the service life of the sand control screen and the economic index of the oil well after sand control

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