Local mechanical model of down-hole tubular strings constrained in curved wellbores

Gao, Deli; Wei, Shaolei

doi:10.1016/j.petrol.2015.03.017

Cited by 13 publications

(3 citation statements)

References 16 publications

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“…In addition, there are three buckling states: nonbuckling, sinusoidal buckling, and helical buckling. Huang et al (2015c) pointed out that there are 9 deflection states and 12 transition conditions by the combination of three contact cases and three buckling states shown in Fig. 4.…”

Section: Connectorsmentioning

confidence: 98%

“…Therefore, the bending moment magnification should be taken into consideration for the tubular string design. On the basis of Paslay's work, Huang et al (2015c) further considered the effect of tubular string weight and assumed that the wellbore curvature is equivalent to an additional tubular string weight. The results show that the tubular string weight and wellbore curvature affect the critical transition conditions between different contact cases a lot.…”

Section: Connectorsmentioning

confidence: 99%

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A review of down-hole tubular string buckling in well engineering

Gao

2015

Pet. Sci.

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Down-hole tubular string buckling is the most classic and complex part of tubular string mechanics in well engineering. Studies of down-hole tubular string buckling not only have theoretical significance in revealing the buckling mechanism but also have prominent practical value in design and control of tubular strings. In this review, the basic principles and applicable scope of three classic research methods (the beam-column model, buckling differential equation, and energy method) are introduced. The critical buckling loads and the post-buckling behavior under different buckling modes in vertical, inclined, horizontal, and curved wellbores from different researchers are presented and compared. The current understanding of the effects of torque, boundary conditions, friction force, and connectors on down-hole tubular string buckling is illustrated. Meanwhile, some unsolved problems and controversial conclusions are discussed. Future research should be focused on sophisticated description of buckling behavior and the coupling effect of multiple factors. In addition, active control of down-hole tubular string buckling behavior needs some attention urgently.

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Section: Connectorsmentioning

confidence: 98%

Section: Connectorsmentioning

confidence: 99%

A review of down-hole tubular string buckling in well engineering

Gao

2015

Pet. Sci.

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“…There are three unknown parameters in the equations above, i.e., 𝜃, 𝐹, and 𝑁. The 15) to ( 17) [33][34][35]. Thus, Eqs.…”

Section: Mechanical Model Of Tubular Stringmentioning

confidence: 99%

Study on the evolution of buckling behavior of tubular string under frictional effects in horizontal wells

Wu,

Fang,

Huang

et al. 2024

J. vibroeng.

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The buckling behavior of tubular string is critical for safe oil and gas resource development. In practical engineering, the buckling of tubular string can appear in different development phases, such as casing putting into wellbore, BHA drilling rock, pipeline buckling, etc. Therefore, in this paper, the buckling behavior and buckling evolution of the tubular string are explored considering friction in horizontal wells. By applying the principles of static equilibrium and beam-string theory, an established theoretical model is utilized to examine the buckling behavior of tubular string. The critical load for sinusoidal buckling is determined by using both the series and trial function methods, and a comparison is made between the results obtained from these two techniques. In addition, perturbation analysis is used to obtain the angular displacement's configuration function in the helical buckling post-buckling state. To validate the model's effectiveness, a comprehensive analysis of the numerical results is performed, considering both sinusoidal and helical buckling scenarios. The research findings demonstrate that both the series method and the trial function method can effectively analyze sinusoidal buckling with high accuracy. The presence of friction significantly impedes the buckling behavior of the tubular string. Moreover, friction’s influence causes a gradual decline in the efficiency of transmitting axial forces along the wellbore axis.

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Mechanical Behaviors of Bottom Hole Assembly with Bent-Housing Positive Displacement Motor Under Rotary Drilling

Liu

Chen

et al. 2017

Arab J Sci Eng

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Local mechanical model of down-hole tubular strings constrained in curved wellbores

Cited by 13 publications

References 16 publications

A review of down-hole tubular string buckling in well engineering

A review of down-hole tubular string buckling in well engineering

Study on the evolution of buckling behavior of tubular string under frictional effects in horizontal wells

Mechanical Behaviors of Bottom Hole Assembly with Bent-Housing Positive Displacement Motor Under Rotary Drilling

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