In-situ observation test device for wear simulation of coiled tubing operation under sand deposition in horizontal wells

Abstract

The invention provides an abrasion in-situ observation testing device for simulating coiled tubing work under sand sedimentation of a horizontal well. The abrasion in-situ observation testing device comprises a test bed base, a testing operation platform, a testing control platform, a lower test sample movement assembly, a test sample mounting assembly, a sand washing liquid circulating assembly, an observation system movement assembly and a control cabinet, wherein the lower test sample movement assembly is composed of a first servo motor, a test sample ball screw and a test sample movement screw nut; the test sample mounting assembly comprises a lower test sample plate, a lower test sample plate baffle, a lower test sample movement assembly of a loading system, the loading system and a test sample group; the lower test sample movement assembly of the loading system comprises a movement and transportation guide rail, a second servo motor and a transmission mechanism; the loading system comprises a loading device and a loading force sensor; the test sample group comprises a test sample clamp and an upper pipe body test sample; the sand washing liquid circulating assembly comprises a variable pump, a sand washing liquid proportioning station, a testing sensor and a waste liquid recycling vessel; the observation system movement assembly comprises a control motor, a shaft coupler, a microscope movement screw and a microscope movement screw nut; the control cabinet is provided with a processor and a controller. By adopting the abrasion in-situ observation testing device, various working conditions of different coiled tubing sand sedimentation under the well can be simulated.

Description

technical field [0001] The invention relates to the technical field of simulating particle migration observation, in particular to an in-situ observation test device for simulating wear in continuous tubing operations under sand deposition in horizontal wells. Background technique [0002] With the rapid development of our country's economy, the consumption of petroleum products is increasing, and the import of foreign oil is also increasing. However, the production of some domestic oil fields has bottlenecks, and the cost of extracting crude oil is increasing. Difficulty continues to increase. With the deepening of mining, there are fewer and fewer high-quality oil fields. Therefore, extended-reach horizontal wells, as an important way to improve drilling efficiency, continue to attract everyone's attention. [0003] At this stage, with the gradual deepening of oil extraction, my country's oil extraction has gradually entered the later stage, high-quality oil reserves are b...

AI Technical Summary

Problems solved by technology

There are few studies on the trajectory and law of particle migration in the contact zone and the wear of the outer surface of the coiled tube.

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