Method for effective placement of a long life scale inhibitor

Details Method for effective placement of a long life scale inhibitor Method for effective placement of a long life scale inhibitor

1993-05-03

1995-01-03

Novosad, Stephen J.

Wells

Processes

Material placed in pores of formation to treat resident...

166269, 166902, E21B 4102, E21B 4325

Patent

active

053777581

ABSTRACT:
A method for placement of a long life scale inhibitor into a formation where variable density scale inhibitors are utilized. A substantially low density non-reactive fluid is loaded into an interval of the formation to be treated. Afterwards, a high density first stage scale inhibitor is injected into the interval. Thereafter, a low density spacer fluid is injected into the interval being treated. Next, a second stage high density scale inhibitor having a density lower than the first stage inhibitor is injected into said interval. Subsequently, a low density spacer is injected into the interval. Volume increments are repeatedly injected with decreasing fluid densities until a desired zone has been treated. The entire treatment is then overflushed with an inert high density fluid. Use of this method allows even inhibitor distribution in intervals of a formation with permeability variations thereby preventing scale build-up.

REFERENCES:
patent: 3483925 (1969-12-01), Slyker
patent: 4387770 (1983-06-01), Hill
patent: 4842068 (1989-06-01), Vercaemer et al.
patent: 4883124 (1989-11-01), Jennings, Jr.
patent: 4947934 (1990-08-01), Hen
patent: 5060728 (1991-10-01), Yan
patent: 5089150 (1992-02-01), Hen

Affiliated with

Also associated with

Rating

Method for effective placement of a long life scale inhibitor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for effective placement of a long life scale inhibitor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for effective placement of a long life scale inhibitor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2204892