Parametric study of controllable parameters in fracture-based wellbore strengthening

Zhong, Ruizhi; Miska, Stefan; Yu, Mengjiao

doi:10.1016/j.jngse.2017.03.018

Cited by 19 publications

(1 citation statement)

References 25 publications

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“…Some parameters, such as injection rate, fluid viscosity, wellbore radius, wellbore inclination, fracture plug width, and optimal wellbore strengthening operations, were investigated in the study. The presented results do not include the variation of hoop stress around the borehole, which is critical for evaluation of stress cage effectiveness [27].…”

Section: Introductionmentioning

confidence: 99%

A Numerical Study on the Application of Stress Cage Technology

et al. 2022

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Lost circulation is considered a time-consuming, costly problem during the construction of oil and gas wells. There are several preventive techniques to mitigate this problem. Stress cage technology is a mechanical lost circulation method, in which the formation at the wellbore wall is strengthened to stop the creation of induced fractures as one of the main causes of lost circulation. In this research, a two-dimensional numerical model, considering the elastic, poro-elastic, and thermo-poro-elastic behavior of the rock, is built to investigate the effectiveness of the stress cage method. Results show that better performance of the technology is achieved if the fractures are bridged close to their apertures. Additionally, it was found that the difference between the elastic, poro-elastic, and thermo-poro-elastic models is slightly visible. The conclusion states that the application of the stress cage methods leads to an increase in hoop stress and subsequent formation fracture gradient.

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Section: Introductionmentioning

confidence: 99%