Selective placement of a permeability-reducing material in a sub

Details Selective placement of a permeability-reducing material in a sub Selective placement of a permeability-reducing material in a sub

1994-05-10

1995-12-19

Suchfield, George A.

Wells

Processes

Cementing, plugging or consolidating

166270, 1663051, E21B 33138, E21B 4322

Patent

active

054761450

ABSTRACT:
A process is provided for selectively placing a permeability-reducing material in an interval of a subterranean hydrocarbon-bearing formation penetrated by a well bore to inhibit the vertical flow of fluid between the well bore and an aquifer underlying the interval. The process is performed by simultaneously injecting a pair of fluids into the well bore, wherein one fluid has a density substantially less than the density of the other, and displacing the fluids out into the interval. The two fluids directly contact one another as they are displaced, however, the density difference between the fluids causes the first fluid to preferentially enter an upper portion of the interval and the second fluid to preferentially enter a lower portion of the interval under the force of gravity stratification or gravity segregation. The second fluid is aged in the lower portion of the interval, transforming it into a permeability-reducing material that substantially inhibits vertical flow between the aquifer and the well bore.

REFERENCES:
patent: 1661270 (1928-03-01), Ryder et al.
patent: 2402588 (1946-06-01), Andresen
patent: 2837163 (1958-06-01), Ramos et al.
patent: 3093192 (1963-06-01), Allen
patent: 3369605 (1968-02-01), Donaldson et al.
patent: 4086964 (1978-05-01), Dilgren et al.
patent: 4387770 (1983-06-01), Hill
patent: 4428429 (1984-01-01), Felber et al.
patent: 4676318 (1987-01-01), Myers et al.
patent: 4683949 (1987-08-01), Sydansk et al.
patent: 4694906 (1987-09-01), Hutchins et al.
patent: 4706754 (1987-11-01), Smith
patent: 4842068 (1989-06-01), Vercaemer et al.
patent: 4903771 (1990-02-01), Hanssen et al.
patent: 4971150 (1990-11-01), Sanchez
patent: 5002127 (1991-03-01), Dalrymple et al.
patent: 5060730 (1991-10-01), Kisman et al.
patent: 5067564 (1991-11-01), Sydansk
patent: 5259453 (1993-11-01), Johnson

Affiliated with

Also associated with

Rating

Selective placement of a permeability-reducing material in a sub does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Selective placement of a permeability-reducing material in a sub, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Selective placement of a permeability-reducing material in a sub will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-987440