Coiled tubing working life prediction
Abstract
Failure of coiled tubing, due to the repeated bending and plastic deformation of coiled tubing on and off the reel and gooseneck, is of great concern in coiled tubing operations. This paper discusses the coiled tubing working life based on one of the coiled tubing life models published in the literature, and compares the results with other models. Certain agreements are found among these models. A group of curves is presented to illustrate the coiled tubing working life affected by coiled tubing size and wall thickness, internal pressure, yield strength, reel diameter, gooseneck radius, operation condition (corrosion) and butt-welded connection (stress concentration). The results show that coiled tubing life can be greatly increased by increasing CT wall thickness and CT strength, while the coiled tubing working life decreases under high internal pressure, corrosion, and butt-weld conditions. These curves can be easily used in estimating coiled tubing life for the field use.
- Authors:
- Publication Date:
- OSTI Identifier:
- 372316
- Report Number(s):
- CONF-950433-
TRN: IM9641%%393
- Resource Type:
- Conference
- Resource Relation:
- Conference: SPE production operations symposium, Oklahoma City, OK (United States), 2-4 Apr 1995; Other Information: PBD: 1995; Related Information: Is Part Of Production operations symposium: Proceedings; PB: 992 p.
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 02 PETROLEUM; 03 NATURAL GAS; OIL WELLS; PIPES; NATURAL GAS WELLS; SERVICE LIFE; FAILURE MODE ANALYSIS; STRESS INTENSITY FACTORS
Citation Formats
Wu, J. Coiled tubing working life prediction. United States: N. p., 1995.
Web.
Wu, J. Coiled tubing working life prediction. United States.
Wu, J. 1995.
"Coiled tubing working life prediction". United States.
@article{osti_372316,
title = {Coiled tubing working life prediction},
author = {Wu, J},
abstractNote = {Failure of coiled tubing, due to the repeated bending and plastic deformation of coiled tubing on and off the reel and gooseneck, is of great concern in coiled tubing operations. This paper discusses the coiled tubing working life based on one of the coiled tubing life models published in the literature, and compares the results with other models. Certain agreements are found among these models. A group of curves is presented to illustrate the coiled tubing working life affected by coiled tubing size and wall thickness, internal pressure, yield strength, reel diameter, gooseneck radius, operation condition (corrosion) and butt-welded connection (stress concentration). The results show that coiled tubing life can be greatly increased by increasing CT wall thickness and CT strength, while the coiled tubing working life decreases under high internal pressure, corrosion, and butt-weld conditions. These curves can be easily used in estimating coiled tubing life for the field use.},
doi = {},
url = {https://www.osti.gov/biblio/372316},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Dec 31 00:00:00 EST 1995},
month = {Sun Dec 31 00:00:00 EST 1995}
}