Analytical model for stick–slip phenomenon in solid tubular expansion

Al-Abri, Omar S.; Pervez, Tasneem; Al-Hiddabi, S.A.; Qamar, Sayyad Zahid

doi:10.1016/j.petrol.2014.11.022

Cited by 14 publications

(7 citation statements)

References 31 publications

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“…In case of MES, length shortening is 4.5% while following similar trend as in SES. The possible reasons of the variation in between experimental and numerical results are: (i) considering homogeneous and isotropic material properties; however, it is experimental found that the properties of as received tubular material are not direction independent (Khan and Almeshaal 2019), and (ii) assuming linear friction, Coulomb, model in contrast of nonlinear variation of friction during expansion (Al-Abri et al 2015). Nevertheless, simulation results of MES are well in line with the experimental and finite element simulation results of SES.…”

Section: Model Validationmentioning

confidence: 99%

“…Another dynamic phenomenon (stickslip), mainly caused by the friction at tubular-mandrel interface, is analyzed through analytical method. A stick-slip mechanism is found to have significant effects on tubular deformation behavior that can ultimately alters post-expansion properties (Al-Abri et al 2015). Another crucial parameter that may impact structural integrity of tubular is the expansion or strain rate.…”

Section: Introductionmentioning

confidence: 99%

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Finite element modeling and simulations of solid expandable tubular in multistage tubular-mandrel system

Alfozan

2022

Mechanical Engineering Journal

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Solid Expandable Tubular (SET) has been proven a promising technology in overcoming several unresolved challenges like isolating unwanted substances, sidetracking, and well repair and patching in horizontal wells. A novel multistage expansion system of SET is found to be an efficient way of reducing expansion cost while conserving tubular structural integrity. However, due to the complexity of multistage system, an estimation of post-expansion properties of tubular, especially in variable physical conditions, becomes a challenge in making the technology viable and cost-effective. In the current work, numerical modeling is utilized to evaluate the effects of multiple physical conditions, tubular-mandrel contact and tubular's boundary conditions, on the postexpansion properties of tubular. Initially, a finite element model of multistage tubular-mandrel system is developed using the real well conditions in finite element software ABAQUS. The real boundary conditions of tubular at the field, fixed-free and fixed-fixed, are incorporated in finite element model. Moreover, a nonlinear material model, using the experimental results of uniaxial tensile tests, is used to model tubular's material behavior, while mandrel is considered as rigid body. A surface-to-surface contact conditions are defined through Coulomb's friction law with varying coefficient of friction. The finite element simulation results are compared with the experimental observations of single-stage tubular-mandrel system and found to be in good agreement. Finally, further simulations are performed to evaluate the deformation behavior of tubular using contact pressure, equivalent stress, tubular thickness variation, length shortening, and equivalent plastic strain. It is observed that the contact and boundary conditions of tubular have significant effects on tubular post-expansion properties.

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Section: Model Validationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Finite element modeling and simulations of solid expandable tubular in multistage tubular-mandrel system

Alfozan

2022

Mechanical Engineering Journal

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“…where , and are known as static friction, coulombic friction and viscous friction, respectively, while ωS is known as Stribeck angular velocity [32][33][34][35]. The above servo-motor-model parameters and their determined values are also shown in Table 3 as they are used in simulation model (see Fig.9 (b)) [32][33][34][35]. In equation 6, it is observed that the motor's rotational-friction torque (N. m) is proportional to the angular velocity (rad/sec).…”

Section: = + +mentioning

confidence: 99%

Energy Efficiency of Force-Sensor-Controlled Humanoid-Robot Walking on Indoor Surfaces

et al. 2020

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“…A careful study of published literature shows that most of the developed models for tubular expansion have ignored the dynamic effects by simply assuming that the expansion process occurs out at a very low speed. It is true that under this assumption strain rate effects are negligible but not the dynamic friction conditions, which originates at the interfaces [24].…”

Section: Literature Reviewmentioning

confidence: 99%

Indirect Extrusion: A Multifaceted Approach of Sub-surface Tubular Expansion

Pervez¹,

Qamar²,

Al-Abri³

et al. 2018

Extrusion of Metals, Polymers and Food Products

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Extrusion and indirect extrusion is a very old manufacturing process used in multitudes of applications mainly focused on transportation, household and power industries. Indirect extrusion has found an interesting application in petroleum industry, which resulted in resolving many unsolvable issues over the last few decades. The current and expected future global demand for hydrocarbons became a driving force for researchers to find new comprehensive and cheaper solutions for hydrocarbon production. The challenges faced in oil and gas fields, while drilling, constructing and operating new and old vertical/horizontal wells, are many. The use of indirect extrusion for insitu expansion of sub-surface tubulars used in wells revolutionized the drilling and completion as opposed to one and half decade back. The emergence of solid expandable tubular technology has changed the basics of how we design and construct wells. The original development of the technology was to overcome the challenges faced by the petroleum industry to reach ultra-deep reservoirs, off-shore drilling, drilling in highpressure/difficult zones and repair/maintenance of old/ageing wells. However, it gained significant interest of researchers and operators in providing solutions to wide-range problems. The development of a computational framework using finite element method (FEM) enabled to determine the force required for expansion and resulting dimensional changes in final product, which is of direct assistance to the field engineers. The effect of friction and stress variations along contact surface is also determined.

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Analytical model for stick–slip phenomenon in solid tubular expansion

Cited by 14 publications

References 31 publications

Finite element modeling and simulations of solid expandable tubular in multistage tubular-mandrel system

Finite element modeling and simulations of solid expandable tubular in multistage tubular-mandrel system

Energy Efficiency of Force-Sensor-Controlled Humanoid-Robot Walking on Indoor Surfaces

Indirect Extrusion: A Multifaceted Approach of Sub-surface Tubular Expansion

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