A Simulation of Casing Damage Considering THM Coupling

Ji, Yangziyi; Cheng, Lisheng; Liu, J. J.; Ye, L. Y.; Liu, D.

doi:10.1080/10916460903514923

Cited by 16 publications

(7 citation statements)

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“…In 1856, H. Darcy conducted permeability test of saturated soil and developed Darcy's law 1. Richards thought that Darcy's law was applicative for unsaturated soil but the permeability coefficient was variable, which was the function of moisture volume percentage 2 [10][11][12]. The equations of motion for unsaturated seepage are…”

Section: Mathematical Model Of Ground Water Seepagementioning

confidence: 99%

Solution of AntiSeepage for Mengxi River Based on Numerical Simulation of Unsaturated Seepage

Zhang

Yue

2014

The Scientific World Journal

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Lessening the leakage of surface water can reduce the waste of water resources and ground water pollution. To solve the problem that Mengxi River could not store water enduringly, geology investigation, theoretical analysis, experiment research, and numerical simulation analysis were carried out. Firstly, the seepage mathematical model was established based on unsaturated seepage theory; secondly, the experimental equipment for testing hydraulic conductivity of unsaturated soil was developed to obtain the curve of two-phase flow. The numerical simulation of leakage in natural conditions proves the previous inference and leakage mechanism of river. At last, the seepage control capacities of different impervious materials were compared by numerical simulations. According to the engineering actuality, the impervious material was selected. The impervious measure in this paper has been proved to be effectible by hydrogeological research today.

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Section: Mathematical Model Of Ground Water Seepagementioning

confidence: 99%

Solution of AntiSeepage for Mengxi River Based on Numerical Simulation of Unsaturated Seepage

Zhang

Yue

2014

The Scientific World Journal

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“…Huang et al 9 predicted the collapse strength of casings by building a finite element model. Ji et al 10 studied the casing failure mechanism by establishing a thermal-hydro-mechanical coupling model for thermal recovery wells. These studies have all adopted the deterministic method to obtain certain values of casing strength and make a comparison between the values obtained and the experimental results, in order to establish the calculation formulas for casing strength safety coefficients.…”

Section: Introductionmentioning

confidence: 99%

Research on a probabilistic assessment method based on defective casing safety evaluation criteria in thermal recovery wells

Zhu

Sun

Tong

2014

Proceedings of the Institution of Mechanical Engineers, Part C:

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Due to the fact that the complexity of loads and uncertainties of random variables affect the reliability of defective casings, with consideration to the disadvantages of the deterministic approach, in this paper a probabilistic assessment method is employed based on previously established safety evaluation criteria for casings with corrosion defects in thermal recovery wells. In addition, Monte Carlo simulation is proposed to analyze the casing reliability under different remaining strengths. Sensitivity analysis is then performed to rank the influence of various variables for casing failure, and finally the influence law of the main parameters on the maximum Von Mises stress of defective casing is summarized.

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“…Yang et al and Zhao studied the wellbore shrinkage in salt rock and proposed the nonlinear creep model [4, 5]. Besides, Willson et al studied the casing extrusion force in creep stratum [6–14]. Most salt rock is bedded salt rock in China, and the mudstone interbed has the features of large quantity and small single layer thickness.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation on Open Wellbore Shrinkage and Casing Equivalent Stress in Bedded Salt Rock Stratum

Liu

Zhang

Zhao

2013

The Scientific World Journal

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Most salt rock has interbed of mudstone in China. Owing to the enormous difference of mechanical properties between the mudstone interbed and salt rock, the stress-strain and creep behaviors of salt rock are significantly influenced by neighboring mudstone interbed. In order to identify the rules of wellbore shrinkage and casings equivalent stress in bedded salt rock stratum, three-dimensional finite difference models were established. The effects of thickness and elasticity modulus of mudstone interbed on the open wellbore shrinkage and equivalent stress of casing after cementing operation were studied, respectively. The results indicate that the shrinkage of open wellbore and equivalent stress of casings decreases with the increase of mudstone interbed thickness. The increasing of elasticity modulus will reduce the shrinkage of open wellbore and casing equivalent stress. Research results can provide the scientific basis for the design of mud density and casing strength.

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A Simulation of Casing Damage Considering THM Coupling

Cited by 16 publications

References 0 publications

Solution of AntiSeepage for Mengxi River Based on Numerical Simulation of Unsaturated Seepage

Solution of AntiSeepage for Mengxi River Based on Numerical Simulation of Unsaturated Seepage

Research on a probabilistic assessment method based on defective casing safety evaluation criteria in thermal recovery wells

Numerical Simulation on Open Wellbore Shrinkage and Casing Equivalent Stress in Bedded Salt Rock Stratum

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