Screen tube anti-erosion ability evaluation experimental device and method

Abstract

The invention discloses a screen tube anti-erosion ability evaluation experimental device and method, the screen tube anti-erosion ability evaluation experimental device comprises an experimental device main body, a liquid supply system, a sand supply system, a nozzle, a collection system, a test frame and a test system; and the longitudinally-arranged experimental device main body sequentially comprises, from top to bottom, a sand injector, a fixing sleeve, a steady flow tube, a spray assembly, a nozzle body, a nozzle, a test piece mounting device and the like; the nozzle is connected with anupper nozzle body, and the inclination of the nozzle and the distance between the nozzle and a test piece can be adjusted by arrangement of the upper nozzle body / or the test piece mounting device.Based on the erosion principle of an abrasive jet, the erosion damage of a sand-containing fluid on a sand control screen tube under different production conditions can be simulated, the law of influence of parameters such as sand-carrying fluid speed, sand-containing concentration, particle size, erosion angle and distance on the erosion resistance of the sand control screen tube can be studied,the erosion characteristics and mechanism of a sand-carrying fluid in the formation can be evaluated, and a basis can be provided for the material selection and structural design of a sand-shielding medium of the screen tube.

Description

Technical field [0001] The invention relates to the technical field of petroleum extraction equipment, and specifically relates to an experimental device and method for testing the anti-erosion characteristics of a sand control screen. Background technique [0002] Sand production in oil wells has become one of the important problems that plague the exploitation of loose sandstone reservoirs. Mechanical sand control is the most commonly used method of sand control in oil wells in oil and gas fields today. Sand control screens are widely used as the core component of mechanical sand control, which has an important impact on the sand control effect and the production of oil wells. At present, there are various types of sand control screens commonly used, including wire-wound screens, slotted screens, metal wool screens, metal mesh cloth screens, and many other sand control screens. Because the working environment in the well is very harsh, the damage and failure of the sand contro...

AI Technical Summary

Problems solved by technology

For some existing indoor experimental devices, the front-mixing type is mostly used, the structure is complex, and the pipeline wears seriously; only some small-scale test pieces can be tested, and the erosion test of the full-scale sand control screen cannot be directly carried out; and the direct mixing with sand is used. Good scouring fluid, uneven sand content due to settling

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