Simulation of Hydraulic Characteristic of Injecting Cable into Coiled Tubing

Abstract:

In order to control and monitor downhole equipment, it is needed to inject cable into coiled tubing. Being directly against the drawback of the traditional injecting method, a new method of adding pressurized water has been put forward. By using Workbench software, this paper researched the regular pattern that water flow’s pressureaffects cable in coiled tubing after it has various deformations in both entrance and main part of coiled tubing, taking 25mm diameter coiled tubing with 3mm diameter cable as an example. It also simulated the effects of water flow toward cable in coiled tubing as well as how the different diverging distances of entrance for injection affects the speed of cable during injection, taking 50.8mm diameter coiled tubing with 5.6 mm diameter cable as an example. It determined the optimal position of cable entrance and provided the theoretic foundation for the possibility and practical manipulation of the new method for injecting cable into coiled tubing.

• Periodical: Applied Mechanics and Materials (Volumes 644-650)
• Pages: 1682-1688
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.644-650.1682
• Online since: September 2014
• Authors: Yi Ding*, Feng Niu, Shi Min Zhang, Jin Jun Zhang
• Keywords: Cable Injection, Coiled Tubing, Downhole Monitoring, Hydraulic Simulation

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