Method of cementing from a floating vessel

Details Method of cementing from a floating vessel Method of cementing from a floating vessel

1980-08-04

1982-06-15

Purser, Ernest R.

Wells

Submerged well

Means removably connected to permanent well structure

166289, 166362, E21B 33124, E21B 3316, E21B 4301

Patent

active

043345824

ABSTRACT:
A method is provided for cementing an annular cavity between a subsea well casing and a borehole from a floating vessel. A drill string is run into the casing. An opening positioner attached to the drill string is engaged with a valve in the casing. The drill string is lifted to open the valve. The drill string is positioned to align an isolation packer with the casing valve. An anchor attached to the drill string is set to provide sufficient resistance between the drill string and the casing to operate a motion compensator on the floating vessel. A cement slurry is then pumped into the drill string, out the isolation packer, through the open casing valve and into the annular cavity between the casing and the well bore-hole.

REFERENCES:
patent: 4042014 (1977-08-01), Scott

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