The drill floor and platform allow a cantilevered mast ... and hydraulic cylinders at the sides of the mast act as bumpers. This substructure is acceptable for electrical rigs. Telescoping ...
Masts are portable load-bearing structures used to support and position the drill string. Masts perform a similar function ... whereas derricks are anchored to the corners of a substructure.
US supermajor Chevron has awarded Shelf Drilling two-year contract extensions for its jack-up rigs Shelf Drilling Chaophraya ...
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