Multi-activity offshore exploration and/or development drilling

Boring or penetrating the earth – Boring a submerged formation

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Details

175 52, 175 85, E21B 712

Patent

active

060680695

ABSTRACT:
A multi-activity drillship, or the like, method and apparatus having a single derrick and multiple tubular activity stations within the derrick wherein primary drilling activity may be conducted from the derrick and simultaneously auxiliary drilling activity may be conducted from the same derrick to reduce the length of the primary drilling activity critical path.

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