Removal of pipe dope constrictions

Details Removal of pipe dope constrictions Removal of pipe dope constrictions

1984-11-08

1986-06-10

Novosad, Stephen J.

Wells

Processes

Cleaning or unloading well

1663051, 134 221, 134 2211, E21B 3700

Patent

active

045937648

ABSTRACT:
Pipe dope restricting fluid communication between a well bore and a subterranean formation is contacted with a liquid perhaloalkane having no more than three carbon atoms per molecule, such as 1,1,2-trichloro-1,2,2-trifluoroethane, to improve fluid communication. The halocarbon can also be contacted with pipe dope on tubulars to remove the pipe dope from the tubulars.

REFERENCES:
patent: 2225434 (1940-12-01), Harrigan
patent: 2512801 (1950-06-01), Kinney et al.
patent: 3154087 (1961-12-01), Beaver
patent: 3156584 (1964-11-01), Yurdin
patent: 3573213 (1971-03-01), Burt
patent: 3607767 (1971-09-01), Schofield
patent: 3728268 (1973-04-01), Burt
patent: 3789006 (1974-01-01), McMillan et al.
patent: 4039465 (1977-08-01), Hutchinson et al.
patent: 4279664 (1981-07-01), Figiel et al.
patent: 4484625 (1984-11-01), Barbee, Jr.
API Bulletin 5A2, Fifth Edition, Apr. 1972.

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