Tubing and Casing Buckling in Horizontal Wells (includes associated papers 21257 and 21308 )

Chen, Yu–Che; Lin, Yu-Hsu; Cheatham, J.B.

doi:10.2118/19176-pa

Cited by 119 publications

(39 citation statements)

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“…3. The critical loads for helical buckling derived by Chen et al (1990) (see the dashed horizontal line with stars in Fig. 3), Wu et al (1993b) Eqs.…”

Section: Effects Of Friction and Boundary Conditions On Helical Bucklmentioning

confidence: 99%

“…On the basis of our observation and experimental data (see Fig. 9), we apply the same relationship between axial load and axial displacement as Chen et al (1990). Arrows A and B in Fig.…”

Section: Effects Of Friction and Boundary Conditions On Helical Bucklmentioning

confidence: 99%

“…Many researchers have been involved in the stability and postbuckling analysis of tubing and drillpipe in vertical wells (Lubinski 1950;Lubinski et al 1962;Mitchell 1986Mitchell , 2002, inclined wells (Paslay and Bogy 1964;Dawson and Paslay 1984;Gao 1996;Miska and Cunha 1995;Miska et al 1996;Mitchell 1997Mitchell , 1988, and horizontal wells (Chen et al 1990;Gao 1996;Gao and Miska 2009;Miska et al 1996;Mitchell 2002;Wu andJuvkam-Wold 1993a, 1993b). Researchers have also studied curved wells (Gao 1996;He and Kyllingstad 1995;Qiu et al 1998;Mitchell 1999Mitchell , 2007 and tubing and pipe subjected to different kinds of loads, including axial compressive load, torque (Cunha 1995;Gao 1996;Miska and Cunha 1995;Wu 1997), and axial frictional drag (Gao 1996;He and Kyllingstad 1995;Miska et al 1996;Mitchell 1986Mitchell , 1996Wu and Juvkam-Wold 1993a).…”

Section: Introductionmentioning

confidence: 99%

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Effects of Friction on Post-Buckling Behavior and Axial Load Transfer in a Horizontal Well

Gao

Miska

2010

SPE Journal

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In this paper, the buckling equation and natural boundary conditions are derived with the aid of calculus of variations. The natural and geometric boundary conditions are used to determine the proper solution that represents the post-buckling configuration. Effects of friction and boundary conditions on the critical load of helical buckling are investigated. Theoretical results show that the effect of boundary conditions on helical buckling becomes negligible for a long pipe with dimensionless length greater than 5. Velocity analysis shows that lateral friction becomes dominant at the instant of buckling initiation. Thus, friction can increase the critical load of helical buckling significantly. However, once buckling is initiated, axial velocity becomes dominant again and lateral friction becomes negligible for post-buckling behavior and axial-load-transfer analysis. Consequently, it is possible to seek an analytical solution for the buckling equation. Analytical solutions for both sinusoidal and helical post-buckling configurations are derived, and a practical procedure for modeling of axial load transfer is proposed. To verify the proposed model and analytical results, the authors also conducted experimental studies. Experimental results support the proposed solutions. IntroductionIt is well known that, when a pipe is subjected to an axial compressive load, the pipe will shorten because of axial compression. As the axial load increases, the pipe will change its configuration from straight to a sinusoidal-wave-like shape and eventually a helical shape. These three different configurations are all static equilibrium states of a pipe subjected to axial compressive load. However, for a given axial load, only one configuration is stable. The critical load beyond which a pipe will change its configuration from a straight line to a sinusoidal-wave-like shape is called the critical load for sinusoidal buckling. The critical load beyond which a pipe will change its configuration from a sinusoidal-wave-like shape to a helical shape is called the critical load for helical buckling.We need to address the difference between stability or buckling analysis and post-buckling analysis of a pipe constrained in a wellbore. Buckling analysis is focused on determination of the critical condition (or critical load) under which a pipe will change its configuration from one type into another; for example, the critical load beyond which a pipe will change from a straight line to a sinusoidal shape or from a sinusoidal shape to a helix. On the other hand, post-buckling analysis is focused on analyzing the relationship between parameters that define the post-buckling configuration and axial load; for example, the relationship between amplitude of the sinusoidal wave and axial load for sinusoidal postbuckling analysis or the relationship between pitch of the helix and axial load for helical post-buckling analysis. The principle of virtual work and the energy-conservation law apply for both buckling and post-buckling analysis.

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“…3. The critical loads for helical buckling derived by Chen et al (1990) (see the dashed horizontal line with stars in Fig. 3), Wu et al (1993b) Eqs.…”

Section: Effects Of Friction and Boundary Conditions On Helical Bucklmentioning

confidence: 99%

“…On the basis of our observation and experimental data (see Fig. 9), we apply the same relationship between axial load and axial displacement as Chen et al (1990). Arrows A and B in Fig.…”

Section: Effects Of Friction and Boundary Conditions On Helical Bucklmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of Friction on Post-Buckling Behavior and Axial Load Transfer in a Horizontal Well

Gao

Miska

2010

SPE Journal

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“…Later, Chen et al [18] inferred the helical buckling critical load of horizontal drill string by energy method. However, none of them considered the effect of friction between drill string and borehole wall, while the frictional resistance is just one of the key factors deciding the drilling length of the horizontal section.…”

Section: Model Verificationmentioning

confidence: 99%

Research on Buckling Behavior and Analysis of Sensitive Factors in Horizontal Well Drilling

Kuang

Liu

et al. 2016

J Fail. Anal. and Preven.

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Buckling behavior of the drill string in the wellbore is one of the key issues in the oil and gas well engineering, which has been investigated by many theoretical and experimental studies in recent years. In order to study the buckling characteristics of drill string in the horizontal well, the factors of gravity, friction, and boundary conditions were taken into account, and a numerical simulation model of horizontal drill string was built up. The buckling critical load of numerical simulation was proven to be in good agreement with the experimental results; that is to say the simulation result is reliable. The key factors of friction coefficient, length of horizontal well section, and radial clearance between drill string and wellbore annular which affect buckling critical load of drill string were discussed. The results show that the angular displacement of horizontal drill string changes in the form of sine when sinusoidal buckling occurs. The pipe string buckling critical load increases with the increasing of friction coefficient. Under the same condition, the buckling critical load of horizontal drill string decreases approximately linear with the raise of horizontal well length, and declines in exponential trend with the increasing of the annular clearance. The research can provide theoretical reference for the optimal design of horizontal well string and practical drilling operation.

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“…Paslay and Bogy (Paslay and Bogy, 1964) deduced the critical condition for sinusoidal buckling in straight inclined wellbore with energy method. Chen (Chen et al, 1990) gave the critical condition for helical buckling in horizontal wellbore with energy method. Mitchell (Mitchell, 1999) deduced the critical condition for helical buckling in curved wellbore with buckling differential equation.…”

Section: Introductionmentioning

confidence: 99%

Sinusoidal buckling of a thin rod with connectors constrained in a torus

Wei

Cheng

Gao

2014

Journal of Natural Gas Science and Engineering

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Tubing and Casing Buckling in Horizontal Wells (includes associated papers 21257 and 21308 )

Cited by 119 publications

References 0 publications

Effects of Friction on Post-Buckling Behavior and Axial Load Transfer in a Horizontal Well

Effects of Friction on Post-Buckling Behavior and Axial Load Transfer in a Horizontal Well

Research on Buckling Behavior and Analysis of Sensitive Factors in Horizontal Well Drilling

Sinusoidal buckling of a thin rod with connectors constrained in a torus

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