Method for cementing casing or liners in an oil well

Details Method for cementing casing or liners in an oil well Method for cementing casing or liners in an oil well

1985-02-19

1987-04-07

Suchfield, George A.

Wells

Processes

Cementing, plugging or consolidating

166184, 166185, 166187, 166191, 166289, 166325, 166386, 166387, E21B 3316, E21B 3327, E21B 3408

Patent

active

046552863

ABSTRACT:
A method for cementing a casing or a liner traversing earth formations comprising the supplemental injection of cement at a pressure greater than the pore pressure in the earth formations during a cementing operation to enchance the effectiveness of the cement integrity by maintaining hydrostatic pressure in an annulus between the pipe and the borehole at a location where the pore pressure of the earth formations is apt to impair the cement integrity in the annulus thereby preventing annular migration of gas or liquids in the cement seal between the earth formations and a liner or casing.

REFERENCES:
patent: 2029380 (1936-02-01), Manning
patent: 2173034 (1939-09-01), Armentrout et al.
patent: 2986217 (1961-05-01), Johnston
patent: 3055424 (1962-09-01), Allen
patent: 3062285 (1962-11-01), Kipp
patent: 3335795 (1967-08-01), Richard et al.
patent: 3865188 (1975-02-01), Doggett et al.
patent: 4155404 (1979-05-01), Hollingsworth
patent: 4420159 (1983-12-01), Wood
patent: 4440226 (1984-04-01), Suman, Jr.
patent: 4450912 (1984-05-01), Callihan et al.

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