Modeling Wellbore Stability with Poroelastic, Thermal, and Chemical Effects
Author Information
Author(s): Shokir Eissa M., Sallam Samy, Abdelhafiz Mostafa M.
Primary Institution: Department of Petroleum Engineering, Cairo University
Hypothesis
How do poroelastic, thermal, and chemical effects influence wellbore stability in extreme drilling environments?
Conclusion
The study found that optimizing mud salinity and managing temperature can significantly enhance formation stability and reduce wellbore risks.
Supporting Evidence
- The poroelastic effect increases pressure due to overbalanced drilling conditions.
- Thermal effects vary with fluid temperature, leading to notable pressure changes.
- Chemical effects are significant, with lower salinity mud increasing pore pressure.
Takeaway
This study shows that the way we manage the mud we use when drilling can help keep the hole stable and safe, especially in tough conditions.
Methodology
The study developed four numerical models to analyze the effects of poroelasticity, thermal, and chemical processes on wellbore stability.
Limitations
The study may not account for all real-world variables affecting wellbore stability, such as varying geological conditions.
Digital Object Identifier (DOI)
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