Analysis of the Casing Collapse in Terms of Geomechanical Parameters and Solid Mechanics

Document Type : Research Paper

Authors

1 ACECR Institute of Higher Education, Isfahan Branch, Petroleum Engineering Department, Isfahan, Iran

2 Petroleum Engineering Department, Shahid Bahonar University of Kerman, Kerman, Iran

Abstract

Casing collapse is one of the major problems in oil fields, imposing a lot of costs on oil companies. This problem occurs not only at drilling times in some formations but also after the completion and production can lead to many problems. Analysis of the behavior of casing collapse in terms of geo-mechanics and solid mechanics could significantly meet the needs of the oil industry of Iran. In this study, at first, casing collapse behavior is investigated by considering the formation creep and casing production defects using numerical methods. Then, the effect of some solid mechanics parameters on the casing collapse is investigated. The results showed that casing construction defects, such as ovality and eccentricity and residual stress, could greatly reduce the casing collapse resistance. The resistance reduction of the casing is about 30.37, 9.65, and 46.87 percent respectively, so that when the casing is placed into the well, it undergoes high strain and finally could be reached to collapse.  In addition, it was found that the construction defects show a higher effect on casing collapse than the salt rock creep.  

Keywords

References

[1]     Smith MB, Pattillo PD. Analysis of casing deformations due to formation flow. InApplied Oilsands Geoscience Conference; 1980 Jan 15.
[2]     Oliveira JE, Idagawa LS, Nogueira EC. Evaporite in Campos Basin: Geological Aspects and Drilling Problems. Report Cenpes-475. 1985.
[3]     Dusseault MB, Maury V, Sanfilippo F, Santarelli FJ. Drilling through salt: constitutive behavior and drilling strategies. InGulf Rocks 2004, the 6th North America Rock Mechanics Symposium (NARMS) 2004 Jan 1.
[4]     ICOFC, Linear tube and casing", Iranian Central Oil Fields Co, Tehran. 2014.
[5]     Jamedari R. Collapse capacity for a pipeline with thick coating. [Master's thesis]. Ås: Norwegian University of Life Sciences; 2015.
[6]     Huang X, Mihsein M. Finite element prediction of the ultimate collapse strength of casings. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science. 2000 Dec 1;214(12):1515-27.
[7]     Cheatham Jr JB, McEver JW. Behavior of casing subjected to salt loading. Journal of Petroleum Technology. 1964 Sep 1;16(09):1069-75.
[8]     Zavrakesh M, and Kazemi A. The Change of properties of drilling cement slurry using nanomaterial as an effective strategy for preventing the casing collapse. National Conference on Landscape 1404, and Technological Achievements in Engineering Sciences. 2015. (in Persian)
[9]     Willson SM, Fossum AF, Fredrich JT. Assessment of salt loading on well casings. InIADC/SPE Drilling Conference 2002 Jan 1.
[10]  Mohebi, R. and Jalalifar, H. "Analysis of the effect of cement on the casing stability in salt formations", Third National Conference on Oil and Gas and Related Industries. 2015. (in Persian)
[11]  Nasehi M, Kamali MT, Nasehi S. Analysis of stress in casings covered with cement in oil and gas wells using the finite element method. Third National Congress of Petroleum Engineering. 2011. (in Persian)
[12]  Clinedinst WO. A rational expression for the critical collapsing pressure of pipe under external pressure. InDrilling and production practice. 1939 Jan 1.
[13]  Tamano T, Mimaki T, Yanagimoto S. A new empirical formula for collapse resistance of commercial casing. Nippon Steel Tech. Rep.. 1985 Jul(26):19-26.
[14]  Tokimasa K, Tanaka K. FEM Analysis of the Collapse Strength of a Tube. Journal of Pressure Vessel Technology. 1986 May 1;108(2):158-64.
[15]  Issa JA, Crawford DS. An improved design equation for tubular collapse. InSPE Annual Technical Conference and Exhibition. 1993 Jan 1.
[16]  Nasehi M, Kamali MT, Nasehi S. Buckling analysis of casing using finite element method. Third National Congress of Petroleum Engineering. 2011. (in Persian)
[17]  ICOFC Drilling Program (Dehloran -28 oil well), Dehloran, Iran. 2012.
[18]  Bruno MS. Geomechanical and decision analyses for mitigating compaction-related casing damage. SPE drilling & completion. 2002 Sep 1;17(03):179-88.
Journal of Chemical and Petroleum Engineering
Volume 53, Issue 2
December 2019
Pages 211-225

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History

  • Receive Date: 22 April 2019
  • Revise Date: 15 June 2019
  • Accept Date: 30 July 2019

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