Dissolving filter cake

Wells – Processes – Specific propping feature

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C166S283000, C166S300000, C166S308100, C166S308300, C507S265000, C507S269000, C507S277000, C507S924000

Reexamination Certificate

active

07066260

ABSTRACT:
Methods are presented to induce a screenout during a subterranean formation fracturing or combined fracturing and gravel packing treatment having a viscoelastic surfactant-based carrier fluid by laying down a filter cake at least a portion of which is a base-soluble material, injecting proppant slurry, and causing hydrolysis and dissolution of the solid base-soluble material by adding base so that leak-off increases, the concentration of proppant in the fracture increases, and the proppant screens out. A method of gravel packing with a viscoelastic surfactant-based carrier fluid by laying down a filter cake at least a portion of which is a base-soluble material, injecting gravel, and causing hydrolysis and dissolution of the solid base-soluble material by adding base. Methods of slowing or accelerating the hydrolysis and dissolution are given, and addition of bridging-promoting materials is included.

REFERENCES:
patent: 3353600 (1967-11-01), Annis et al.
patent: 4848467 (1989-07-01), Cantu
patent: 4957165 (1990-09-01), Cantu
patent: 4986355 (1991-01-01), Casad
patent: 5325921 (1994-07-01), Johnson et al.
patent: 5330005 (1994-07-01), Card
patent: 5439055 (1995-08-01), Card
patent: 5501275 (1996-03-01), Card
patent: 5551516 (1996-09-01), Norman
patent: 5782300 (1998-07-01), James
patent: 5964295 (1999-10-01), Brown
patent: 5979555 (1999-11-01), Gadberry
patent: 5979557 (1999-11-01), Card
patent: 6258859 (2001-07-01), Dahayanake
patent: 2003/0062160 (2003-04-01), Boney et al.
patent: 2003/0106690 (2003-06-01), Boney et al.
patent: 2004/0094301 (2004-05-01), Hughes et al.
patent: 2004/0221989 (2004-11-01), Zhou et al.
patent: 03/023177 (2003-03-01), None
M. Economides and K. Nolte, eds.,Reservoir Stimulation,3rdedition, John Wiley & Sons, Ltd, New York (2000) pp. 10-21 to 10-24.
F. L. Monus, F. W. Broussard, J. A. Ayoub and W. D. Norman, “Fracturing Unconsolidated Sand Formations Offshore Gulf of Mexico,” SPE 24844, (1992).

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Dissolving filter cake does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dissolving filter cake, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dissolving filter cake will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3698575

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.