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Sandbox:Shallow gas zones

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Shallow gas may be encountered at any time in any region of the world. The only way to combat this problem is to never shut in the well; divert the gas flow through a diverter system instead. High-pressure shallow gas can be encountered at depths as low as a few hundred feet where the formation-fracture gradient is very low. The danger is that if the well is shut in, formation fracturing is more likely to occur, which will result in the most severe blowout problem, underground blow.

References

Noteworthy papers in OnePetro

External links

See also

Drilling problems

PEH:Drilling_Problems_and_Solutions

Category