Abstract
Erosion wear is the main reason for the failure of coiled tubing during hydraulic jet fracturing operations. Taking Φ 60.325mm × 4.775mm CT90 coiled tubing as the research object. Three-dimensional finite element model of coiled tubing is established. The effects of mass flow, particle flow rate, particle diameter and other sensitive factors on the erosion characteristics of coiled tubing were analyzed by FLUENT software. The research results show that: The erosion wear rate of coiled tubing shows a nonlinear increasing trend with the increase of mass flow and particle flow rate, and the increasing trend is firstly slow and then sharply. As the particle diameter increases, the maximum erosion rate of coiled tubing changes irregularly. The particle flow rate is most sensitive to the erosion of coiled tubing. The finite element method used in this article provides a reference for the evaluation of the erosion wear of coiled tubing in hydraulic fracturing operations.
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