Sand control screen pipe anti-collapse strength testing device

Abstract

The invention provides a sand control screen pipe anti-collapse strength testing device. The sand control screen pipe anti-collapse strength testing device comprises a high-pressure cylinder body, a high-pressure pump and a blocking layer; the high-pressure cylinder body is internally provided with a sand control screen pipe, wherein two ends of the sand control screen pipe are respectively connected with an outlet end cap and a centralizing end cap, the centralizing end cap is in abutting joint with the inner wall of the high-pressure cylinder body; one end of the high-pressure pump is connected with the high-pressure cylinder body, and the other end is connected with a water source supplying mechanism; the blocking layer wraps the periphery of the sand control screen pipe, and the periphery of the blocking layer is provided with a wrapper layer. The sand control screen pipe anti-collapse strength testing device provided by the invention adopts a pressure medium to apply extrusion force from the periphery of the sand control screen pipe uniformly, compared with the direct extrusion of an existing pressure test machine in the prior art, the manner is more conform with the actual extrusion condition of the sand control screen pipe, and the testing result is more reasonable and accurate.

Description

technical field [0001] The invention relates to a test device for anti-collapse strength, in particular to a test device for anti-collapse strength of a sand control screen pipe in the technical field of petroleum exploitation. Background technique [0002] In the field of petroleum extraction technology, especially for the exploitation of unconsolidated oil and gas reservoirs, due to the common sand production in the mining process, it is necessary to adopt sand control technology for mining. Sand control screen is the most commonly used and most important tool in mechanical sand control technology. . [0003] In the process of oil well production, due to the clogging of the sand control screen, or the collapse, deformation, and necking of the wellbore, the external extrusion load of the screen increases. When the external extrusion force is greater than the collapse resistance of the screen, it will Lead to deformation and damage of the screen tube. Field practice shows ...

AI Technical Summary

Problems solved by technology

The extrusion method of the first method is quite different from the actual extrusion method of the screen in the oil well, and the test results are quite different from the actual collapse strength of the screen; the cost of the test device for the second method is high , has high performance requirements for high-pressure pumps, high requirements for the preparation of plugging slurry, and complicated test operations. In the actual test process, it often happens that the screen tube cannot be well blocked and cannot withstand high pressure, which affects the test test. the result of

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