Technique for cementing casing in an offshore well to seafloor

Details Technique for cementing casing in an offshore well to seafloor Technique for cementing casing in an offshore well to seafloor

1978-08-18

1980-03-04

Novosad, Stephen J.

Wells

Processes

With indicating, testing, measuring or locating

166 66, 166336, E21B 4300, E21B 4900

Patent

active

041912500

ABSTRACT:
This specification discloses a method and system for cementing a casing string with returns to the seafloor in an offshore wellbore. The hydrostatic pressure at a preselected point within the annulus formed intermediate the casing string and the wellbore wall is monitored during a cementing operation to determine when cement returns in the annulus reach the seafloor and thereafter the cementing operation is terminated.

REFERENCES:
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patent: 2171840 (1939-09-01), Armentrout et al.
patent: 2217708 (1940-10-01), Scardmucci
patent: 2220205 (1940-11-01), Buckley
patent: 2453456 (1948-11-01), Piety
patent: 2524933 (1950-10-01), Silverman
patent: 2669877 (1954-02-01), Dunlap et al.
patent: 3304776 (1967-02-01), Bennett et al.
patent: 3489219 (1970-01-01), Higgins
patent: 3990304 (1976-11-01), Roesner
patent: 4010642 (1977-03-01), McArthur

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