Borehole cementing over water

Details Borehole cementing over water Borehole cementing over water

1981-12-14

1984-05-01

Novosad, Stephen J.

Wells

Processes

Cementing, plugging or consolidating

166285, E21B 3313

Patent

active

044455755

ABSTRACT:
A borehole cementing process in which a quantity of water-like fluid is pumped into a borehole above drilling mud and the cement slurry is pumped into the borehole above at least a portion of the water-like fluid. Turbulent mixing of cement slurry and water at the interface creates an isolation zone preventing degradation of the bulk of the cement slug.

REFERENCES:
patent: 2546252 (1951-03-01), Bankson
patent: 3884302 (1975-05-01), Messenger
patent: 4190110 (1980-02-01), Beirute
patent: 4275788 (1981-06-01), Sweatman
"Injection Process for Sealing Water Sands," by K. C. Schlater, The Petroleum Engineer, 1936.

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