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RESEARCH PAPERS

Post-Expansion Tube Response Under Mechanical and Hydraulic Expansion—A Comparative Study

[+] Author and Article Information
A. C. Seibi

Department of Mechanical Engineering, Petroleum Institute, P.O. Box 2533, Abu Dhabi, UAEaseibi@pi.ac.ae

A. Karrech

 Ecole Nationale des Ponts et Chaussées, LAMI, 77455 Marne La Vallée Cedex 2, Paris, Francekarrech@lami.enpc.fr

T. Pervez

Mechanical and Industrial Engineering Department, Sultan Qaboos University, P.O. Box 33, Al-Khod 123, Omantasneem@squ.edu.om

J. Pressure Vessel Technol 129(1), 118-124 (Apr 09, 2006) (7 pages) doi:10.1115/1.2389028 History: Received July 27, 2005; Revised April 09, 2006

This paper presents a mathematical model of post-expansion tube response under mechanical expansion. The stress, pressure, and displacement waves propagating through the tube-fluid system and their effect on the tube response are studied. The model takes into account coupling between the solid tube and surrounding fluid at the borehole/expanded tube annulus, as well as the damping effect on tube structural response. The paper also conducts a comparative study aiming at studying the post-expansion tubular fluid response and identifying the different features between hydraulic and mechanical solid tube expansion. The results showed that the mechanical expansion is less harmful to the tube structural integrity. Unlike the hydraulic expansion, which resulted in local stress buildup along the tube, the mechanical expansion was characterized by low equivalent stress throughout its length and a smooth dying out response.

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Copyright © 2007 by American Society of Mechanical Engineers
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Figures

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Figure 1

Diagram illustrating the pop-out phenomenon in mechanical expansion

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Figure 2

Axial stress in the tube at various tube positions

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Figure 3

Axial fluid pressure at various tube positions

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Figure 4

Axial tube displacement at various tube positions

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Figure 5

Axial fluid displacement at various tube positions

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Figure 6

Effect of damping on the equivalent stress in the case of hydraulic expansion

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Figure 7

Effect of damping on the equivalent stress in the case of mechanical expansion

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Figure 8

Equivalent stress distribution in the case of hydraulic expansion

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Figure 9

Equivalent stress distribution in the case of mechanical expansion

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