Mud Cap Drilling Procedure
In general, good operating practice calls for regaining circulation before drilling ahead. However, in some companies, there is one notable exception, mud cap drilling. Mud-cap drilling permits continued drilling despite a pressured formation and a lost-circulation zone in the same interval of the open hole. Although mud-cap drilling has been employed in a limited manner in many oil and gas companies.

Mechanism

Drilling with a floating mud cap involves drilling ahead blind (i.e.,
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