Equations to calculate collapse strength of defective casing for steam injection wells

Shaohu, Liu; Zheng, Hualin; Zhu, Xiaohua; Tong, Hua

doi:10.1016/j.engfailanal.2014.03.010

Cited by 21 publications

(9 citation statements)

References 8 publications

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“…A uniform wear model is used in API formula; however, the casing wear between the tool joint and casing inner wall is a typical eccentric wear, as shown in Figure 21. Therefore, many scholars 8,9,18,26 point out that it is conservative and uneconomical to use API formula for the calculation and evaluation of the remaining strength of nonuniformly worn-out casing.…”

Section: Analysis On the Relationship Of Maximum Wear Depth And Timementioning

confidence: 99%

“…As a result, it leads to a partial or full well abandonment and brings great inconvenience for the drilling operation and its subsequent completion and production. [6][7][8] In China, 1 typical casing wear wells include Shengke-1, Yingke-1, Chegu-204, Dongqiu-5, Yacheng 13-1-3, and other dozens of wells. 8,9 Scholars have explored and proposed many research methods on the casing wear through experimental tests, numerical simulations, and field data.…”

Section: Introductionmentioning

confidence: 99%

“…[6][7][8] In China, 1 typical casing wear wells include Shengke-1, Yingke-1, Chegu-204, Dongqiu-5, Yacheng 13-1-3, and other dozens of wells. 8,9 Scholars have explored and proposed many research methods on the casing wear through experimental tests, numerical simulations, and field data. Through extensive experimental tests, Williamson 10 proposed that a main factor affecting the casing wear was the magnitude of the loading between the joint and the casing and found an experimental relationship between the contact pressure and casing wear rate based on the new test machine.…”

Section: Introductionmentioning

confidence: 99%

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Experimental and numerical study on casing wear in highly deviated drilling for oil and gas

Lian

Lin

et al. 2016

Advances in Mechanical Engineering

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Aimed at studying the casing wear in the highly deviated well drilling, the experimental study on the casing wear was carried out in the first place. According to the test data and the linear wear model based on the energy dissipation proposed by White and Dawson, the tool joint-casing wear coefficient was obtained. The finite element model for casing wear mechanism research was established using ABAQUS. The nodal movement of the contact surface was employed to simulate the evolution of the wear depth, exploiting the Umeshmotion user subroutine. In addition, the timedependent geometry of the contact surfaces between the tool joint and casing was being updated continuously. Consequently, the contact area and contact pressure were changed continuously during the casing wear process, which gives a more realistic simulation. Based on the shapes of worn casing, the numerical simulation research was carried out to determine the remaining collapse strength. Then the change curve of the maximum casing wear depth with time was obtained. Besides, the relationship between the maximum wear depth and remaining collapse strength was established to predict the maximum wear depth and the remaining strength of the casing after a period of accumulative wear, providing a theoretical basis for the safety assessment of worn casing.

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Section: Analysis On the Relationship Of Maximum Wear Depth And Timementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Experimental and numerical study on casing wear in highly deviated drilling for oil and gas

Lian

Lin

et al. 2016

Advances in Mechanical Engineering

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“…Pilot test of complex thermal fluid recovery technology was conducted in Bohai heavy oil filed since 2009 with significant producing progress achieved in NB block and LD block [1][2][3]. However, wellhead uplift was detected during the pilot test among many thermal injection wells.…”

Section: Introductionmentioning

confidence: 99%

“…(1) Jet of complex thermal fluid wounding people when the weld bead of wellhead pipeline cracks due to over uplifting (2) Oil and gas leakage caused by casing displacement and cement failure (3) Casing hanger wrecks inside Christmas tree.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Wellhead Uplift in Offshore Thermal Recovery by Using Finite Element Numerical Simulation

Dong¹,

Zhuang²,

Ji³

et al. 2018

Journal of Engineering

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Pilot test of complex thermal fluid recovery technology was conducted in NB35-2 heavy oil field. Wellhead uplift was detected among some oil wells, and development of offshore thermal recovery technology could be restricted by the serious safety problems behind. This paper is based on the specific operating conditions of one oil well in the trial block, and the simulation calculation of casing elongation and wellhead uplift are conducted by using finite element analysis. The total casing elongation calculated is 4.2 cm, which is consistent with the field test results. According to the research, we concluded that the wellhead uplift is caused by upper casing elongation. 88% of the total elongation happens in the air and seawater sections. Elongation is lesser in strata and the casing string below 360 m can be considered as anchored.

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Determination of Suitable Pillar Size for Protecting Gas Well Drilled Through a Longwall Mining Abutment Pillar Using Numerical Modelling Approach: A Case Study

Bali

Mishra

2020

Geotech Geol Eng

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Equations to calculate collapse strength of defective casing for steam injection wells

Cited by 21 publications

References 8 publications

Experimental and numerical study on casing wear in highly deviated drilling for oil and gas

Experimental and numerical study on casing wear in highly deviated drilling for oil and gas

Analysis of Wellhead Uplift in Offshore Thermal Recovery by Using Finite Element Numerical Simulation

Determination of Suitable Pillar Size for Protecting Gas Well Drilled Through a Longwall Mining Abutment Pillar Using Numerical Modelling Approach: A Case Study

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