Oil well and method using completion fluid

Details Oil well and method using completion fluid Oil well and method using completion fluid

1989-09-14

1990-11-06

Suchfield, George A.

Wells

Processes

Cementing, plugging or consolidating

1663051, 166902, 252 851, 252 8551, 252 8555, C09K 704, E21B 3313, E21B 4102, E21B 4312

Patent

active

049678388

ABSTRACT:
Disclosed is a method of preventing fluids in the ground from rising around an oil well pipe by filling the space around the pipe with an oil well completion fluid comprising water, about 50 to about 65% by weight, based on total fluid weight, of dipotassium phosphate, and at least about 10 ppm hexavalent chromium. The fluid can be prepared by neutralizing wet process phosphoric acid with potassium hydroxide to a pH of less than 12 and filtering off any solids. Also disclosed is an oil well employing the completion fluid.

REFERENCES:
patent: 1873084 (1932-08-01), Walker
patent: 1997256 (1935-04-01), Hall
patent: 2711391 (1955-06-01), Kahler
patent: 2777818 (1957-01-01), Gambill
patent: 2813075 (1957-11-01), Brooke
patent: 2900222 (1959-08-01), Kahler
patent: 3248692 (1966-04-01), Metler et al.
patent: 3284319 (1966-11-01), Hill
patent: 3431217 (1969-03-01), Hwa
patent: 4409121 (1983-10-01), Latos
patent: 4521316 (1985-06-01), Sikorski

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