Cement Sheath Stress Failure

1992 ◽  
Vol 7 (04) ◽  
pp. 291-296 ◽  
Author(s):  
K.J. Goodwin ◽  
R.J. Crook
Keyword(s):  
Cement Sheath

scholarly journals Integrity tests of cement sheath for shale gas wells under strong alternating thermal loads

2020 ◽  
Vol 7 (6) ◽  
pp. 671-679
Author(s):  
Yuanhua Lin ◽  
Kuanhai Deng ◽  
Hao Yi ◽  
Dezhi Zeng ◽  
Liang Tang ◽  
...  
Keyword(s):  
Shale Gas ◽  
Thermal Loads ◽  
Gas Wells ◽  
Cement Sheath ◽  
Integrity Tests

Cement-Sheath Wellbore Integrity for CO2 Injection and Storage Wells

2010 ◽  
Author(s):  
Koji Takase ◽  
Yogesh Ramesh Barhate ◽  
Hiroyuki Hashimoto ◽  
Siddhartha Francois Lunkad
Keyword(s):  
Co2 Injection ◽  
Wellbore Integrity ◽  
Cement Sheath ◽  
And Storage

A Singular Methodology To Design Cement Sheath Integrity Exposed To Steam Stimulation

2008 ◽  
Author(s):  
Andre Garnier ◽  
Jeremie Saint-Marc ◽  
Axel-Pierre Bois ◽  
Yvan Kermanac'h
Keyword(s):  
Cement Sheath ◽  
Steam Stimulation

scholarly journals Study on Thermo-Hydro-Mechanical Coupling and the Stability of a Geothermal Wellbore Structure

Energies ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 649
Author(s):  
Xiaolin Huan ◽  
Gao Xu ◽  
Yi Zhang ◽  
Feng Sun ◽  
Shifeng Xue
Keyword(s):  
Effective Stress ◽  
Cold Water ◽  
Drilling Fluid ◽  
Water Injection ◽  
Coupled Model ◽  
In Situ Stress ◽  
Excess Pore Pressure ◽  
Mechanical Coupling ◽  
Open Hole ◽  
Cement Sheath

For processes such as water injection in deep geothermal production, heat transfer and fluid flow are coupled and affect one another, which leads to numerous challenges in wellbore structure safety. Due to complicated wellbore structures, consisting of casing, cement sheaths, and formations under high temperature, pressure, and in situ stress, the effects of thermo-hydro-mechanical (THM) coupling are crucial for the instability control of geothermal wellbores. A THM-coupled model was developed to describe the thermal, fluid, and mechanical behavior of the casing, cement sheath, and geological environment around the geothermal wellbore. The results show that a significant disturbance of effective stress occurred mainly due to the excess pore pressure and temperature changes during cold water injection. The effective stress gradually propagated to the far-field and disrupted the integrity of the wellbore structure. A serious thermal stress concentration occurred at the junction of the cased-hole and open-hole section. When the temperature difference between the injected water and the formation was up to 160 °C, the maximum hoop tensile stress in the granite formation reached up to 43.7 MPa, as high as twice the tensile strength, which may increase the risk of collapse or rupture of the wellbore structure. The tensile radial stress, with a maximum of 31.9 MPa concentrated at the interface between the casing and cement sheath, can cause the debonding of the cementing sheath. This study provides a reference for both the prediction of THM responses and the design of drilling fluid density in geothermal development.

Evaluation of the cement sheath safety after shaped charge perforation considering the criterion of cement stone destruction

2021 ◽  
pp. 50-53
Author(s):  
S.E. Chernyshov ◽  
◽  
S.G. Ashikhmin ◽  
Yu.A. Kashnikov ◽  
A.D. Savich ◽  
...  
Keyword(s):  
Shaped Charge ◽  
Cement Stone ◽  
Cement Sheath
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