Downhole confining pressure abrasive material jet flow simulation experimental device and method

Abstract

The invention relates to a downhole confining pressure abrasive material jet flow simulation experimental device and method. The downhole confining pressure abrasive material jet flow simulation experimental device comprises a confining pressure barrel. A nozzle installation adjustment component is arranged at the left end of the confining pressure barrel. A test-piece clamping component is arranged at the right end of the confining pressure barrel. A pressure meter used for measuring the pressure in the confining pressure barrel and a safety valve used for decompression are arranged on the wall of the confining pressure barrel. A visual nozzle and lighting nozzles are arranged at the top of the confining pressure barrel, and the center hole of the visual nozzle and the center holes of the lighting nozzles are communicated with the confining pressure barrel. A sapphire high-pressure resistant lens is installed at the bottom end of the center hole of the visual nozzle in a sealed mode. A high-speed camera directly facing the sapphire high-pressure resistant lens is arranged in the visual nozzle. Optical fiber light sources are installed in the center holes of the lighting nozzles in a sealed mode. A material storage tank is communicated with the bottom of the confining pressure barrel. A closed cavity is formed by the confining pressure barrel and the material storage tank. The material storage tank is installed on a base. The invention further provides a downhole confining pressure abrasive material jet flow simulation experimental method. According to the scheme, the problems that an existing experimental device is low in pressure bearing capacity and inconvenient to operate and the experimental process is not observed clearly are solved.

Description

technical field [0001] The invention relates to the field of water jet technology, in particular to an underground confining pressure abrasive jet simulation experiment device and method. Background technique [0002] High-pressure abrasive water jet is a new processing technology developed on the basis of pure water jet processing in the early 1980s. It is a liquid-solid two-phase medium jet formed by mixing abrasives with high-pressure, high-speed flowing water. Its cutting action is mainly completed by abrasives. Under the high-speed impact of high-pressure water, the abrasive speed increases sharply to form a high-speed abrasive jet. And work at a very high speed through the impact of the abrasive nozzle, so that the local stress field stress on the workpiece is concentrated at a high speed and changes rapidly, resulting in erosion, shearing, and until the material is cut off. [0003] At the end of the 1980s, the University of Hannover in Germany used the submerged abr...

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a downhole confining pressure abrasive jet simulation experiment device and method, which can solve the problems of the existing experimental device with low pressure, troublesome operation and unclear observation of the experimental process

Images