Experimental research concerning the influence of external diameter on the behavior of coiled tubing to cyclic bending with internal pressure

Vlad Ulmanu, Dragos Zisopol, Ciprian Trifan

Аннотация


This paper presents results of experimental research concerning the influence of the external diameter on the fatigue behavior of coiled tubing manufactured from X70 steel, loaded by cyclic bending with internal pressure.

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Литература


Oliviu, Rusu. The Metals Fatigue, Estimation Bases. Volume I, II. Technical Publishing House, Bucharest, 1992.

Tipton, S.M., Behenna, F.R. An Investigation of the Efects of the Physical Properties of Coiled Tubing on Fatigue Modeling, SPE 89571, Houston, Texas, 2004.

Ulmanu, V. Oil Tubular Material, Technical Publishing House, Bucharest, 1992.

Ulmanu, V., Zisopol, D.G., Trifan, C.N. Theoretical-Experimental Research Concerning the Exploitation Characteristics Influence on Coiled Tubing Lifetime Used in the Oil Industry, 33350/29.06.2004 CNCSIS Grant, type TD, 2004-2005.

Zisopol, D.G. Research Concerning the Construction of the Coiled Tubing Used in the Oil Industry, Ph. D. Thesis, Petroleum – Gas University of Ploiesti, September, 2000.


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