Inhibition of scale formation from oil well brines utilizing a s

Details Inhibition of scale formation from oil well brines utilizing a s Inhibition of scale formation from oil well brines utilizing a s

1992-02-14

1992-08-25

Stoll, Robert L.

Compositions

Leather or fur treating

252 8555, 2523892, 252180, 166279, 166300, 422 15, 422 17, E21B 4325, C23F 1114, C23F 1112, C23F 11167

Patent

active

051416557

ABSTRACT:
A method for the inhibition of scale deposition on the surfaces of a well coproducing oil and scale forming brines comprising injecting into the well reservoir an acidic aqueous solution at a first pH containing dissolved therein a scale inhibitor, multivalent metal ions, and a heat sensitive pH increasing substance which decomposes at elevated temperatures liberating an alkaline compound such that the solution is inherently heated by the higher ambient reservoir temperature to a temperature at which the alkaline compound is liberated from the heat sensitive substance thus raising the pH of the solution to a point at which a sparingly soluble multivalent metal salt of the scale inhibitor is phase separated from the solution on the porous surfaces of the reservoir rock formation, providing for a slow release of inhibitor into the produced brines when the well is in its production phase.

REFERENCES:
patent: 3303139 (1967-02-01), Blaser et al.
patent: 3619427 (1971-11-01), Kautsky
patent: 3654993 (1972-04-01), Smith et al.
patent: 3661785 (1972-05-01), Pierri
patent: 3704750 (1972-12-01), Miles et al.
patent: 3827977 (1974-08-01), Miles et al.
patent: 3965027 (1976-06-01), Boffard et al.
patent: 4033896 (1977-07-01), Mitchell et al.
patent: 4048065 (1977-09-01), Suen et al.
patent: 4052160 (1977-10-01), Cook et al.
patent: 4153649 (1979-05-01), Griffin, Jr.
patent: 4222779 (1980-09-01), Benaali et al.
patent: 4357248 (1982-11-01), Berkshire et al.
patent: 4563284 (1986-01-01), Amjad
patent: 4602683 (1986-07-01), Meyers
patent: 4663053 (1987-05-01), Geiger
patent: 4830782 (1989-05-01), Broze et al.
patent: 4872996 (1989-10-01), Grierson et al.
patent: 5002126 (1991-03-01), Carlberg et al.

Affiliated with

Also associated with

Rating

Inhibition of scale formation from oil well brines utilizing a s does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Inhibition of scale formation from oil well brines utilizing a s, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Inhibition of scale formation from oil well brines utilizing a s will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-382866