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Publication date
Priority to US283780ApriorityCriticalpatent/US3299954A/en
Application filedfiledCritical
Priority to NL6506235Aprioritypatent/NL6506235A/xx
Publication of NL6506235ApublicationCriticalpatent/NL6506235A/xx
E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
E21B47/00—Survey of boreholes or wells
E21B47/06—Measuring temperature or pressure
E—FIXED CONSTRUCTIONS
E21—EARTH OR ROCK DRILLING; MINING
E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
E21B29/12—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground specially adapted for underwater installations
E—FIXED CONSTRUCTIONS
E21—EARTH OR ROCK DRILLING; MINING
E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
E21B33/00—Sealing or packing boreholes or wells
E21B33/02—Surface sealing or packing
E21B33/03—Well heads; Setting-up thereof
E21B33/04—Casing heads; Suspending casings or tubings in well heads
E21B33/043—Casing heads; Suspending casings or tubings in well heads specially adapted for underwater well heads