2024
DOI: 10.3390/app14062317
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Study on the Vertical Stability of Drilling Wellbore under Optimized Constraints

Ruixue Pan,
Jimin Liu,
Hua Cheng
et al.

Abstract: With the development of coal resource extraction and wellbore construction proceeding towards deeper depths, the stability of drilling wellbore structures has become increasingly severe, even posing a barrier to the use of drilling method technology in deep wellbore construction. To address this issue, this study raised an optimized constraints method involving pre-throwing cement slurry to the bottom before wellbore decent, altering bottom constraints. Firstly, the critical depth and instability criterion of … Show more

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