Erosive wear experiment method

Abstract

The invention relates to the field of oil and gas resource development, and discloses an erosive wear experimental method which comprises the following steps: acquiring a failure point of an actual failure pipeline, pipeline internal pressure and an erosion parameter; a section of pipeline which is made of the same material as the actual failure pipeline and is scaled down in an equal proportion is adopted as a first experimental pipeline, pipeline erosion is simulated according to erosion parameters of the actual failure pipeline, and a failure point of the first experimental pipeline is determined; a section of visual pipeline with the same size as the first experimental pipeline is adopted as a second experimental pipeline, pipeline erosion is simulated according to the erosion parameters of the actual failure pipeline, and the erosion parameters of the second experimental pipeline at the failure point are determined; and taking a test piece as an experiment main body, respectively applying bidirectional tension to the test piece along two vertical axial directions of the test piece to simulate the internal pressure of the pipeline, and spraying an erosion medium to the surface of one side of the test piece according to the erosion parameters at the failure point to carry out an erosion experiment.

Description

technical field [0001] The invention relates to the technical field of oil and gas resource development, in particular to an erosion and wear test method. Background technique [0002] Erosion wear refers to a kind of wear phenomenon in which the surface of the material is damaged when it is impacted by small and loose flowing particles. Its definition can be described as the loss of surface material when the solid surface is in contact with the fluid containing solid particles for relative motion. The fluid carrying the solids can be a high-velocity gas stream (known as sandblasting-type erosion) or a liquid flow (known as mud-type erosion). Erosion wear is a common form of wear in modern industrial production, and it is one of the important reasons for equipment and its parts to be damaged and scrapped. [0003] A large number of multiphase flow conditions are involved in the whole process of oil and gas field exploration and development. The erosion failure of tools and ...

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Problems solved by technology

[0004] However, the current research on material erosion mostly focuses on a single fluid erosion condition, that is, the multiphase fluid is impacted on the test piece at a certain speed and angle through the nozzle to complete the erosion of the test piece, which cannot be used for fracturing. Simulate the complex working conditions of pipeline material erosion failure in construction, reverse flow, well killing and blowout, high-pressure gas well sand production, etc., and obtain reasonable and effective experimental data to guide on-site safety production

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