Employing liner drilling technology can mitigate deepwater wellbore instability

Steven M. Rosenberg Deepak M. Gala Weatherford International Ltd. Houston While deepwater drilling presents a myriad of challenges, perhaps one of the most economically and technically taxing relates to the risk of lost circulation. This phenomenon, in which whole drilling mud enters the formation from the wellbore, introduces several setbacks, ranging from the loss of thousands of barrels of expensive drilling mud to the irreversible collapse of the wellbore. There are a number of technical solutions to prevent this, and liner drilling technology is one of the most viable candidates. Drilling-with-liner alleviates several wellbore instability concerns, including minimizing lost circulati...

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