Wells – Processes – Placing fluid into the formation
Reexamination Certificate
2005-11-22
2005-11-22
Walker, Zakiya (Department: 3672)
Wells
Processes
Placing fluid into the formation
C166S280100, C166S300000, C166S307000, C166S309000, C507S202000, C507S211000, C507S216000, C507S244000, C507S922000
Reexamination Certificate
active
06966379
ABSTRACT:
Methods of fracturing a subterranean formation include providing a fracturing fluid having a first pH. The fracturing fluid may be made by combining a gelling agent, a surfactant, and a proppant. The surfactant is capable of facilitating foaming of the fracturing fluid at the first pH and defoaming of the fracturing fluid when its pH is changed to a second pH. The methods of fracturing the subterranean formation further include foaming the fracturing fluid having the first pH and subsequently pumping it to the subterranean formation to fracture the formation. The pH of the fracturing fluid changes to a second pH, for example via in situ contact with an acidic material, causing the level of foam in the fracturing fluid to be reduced. As a result of the reduction of the foam, the fracturing fluid deposits the proppant into the fractures formed in the subterranean formation.
REFERENCES:
patent: 3303896 (1967-02-01), Tillotson et al.
patent: 3572439 (1971-03-01), Hutchison et al.
patent: 3610340 (1971-10-01), Hutchison et al.
patent: 4108782 (1978-08-01), Thompson
patent: 4113631 (1978-09-01), Thompson
patent: 4232741 (1980-11-01), Richardson et al.
patent: 4301016 (1981-11-01), Carriere et al.
patent: 4480696 (1984-11-01), Almond et al.
patent: 4486316 (1984-12-01), Carriere et al.
patent: RE32302 (1986-12-01), Almond et al.
patent: 4627495 (1986-12-01), Harris et al.
patent: 4664851 (1987-05-01), Drent
patent: 4694906 (1987-09-01), Hutchins et al.
patent: 4809783 (1989-03-01), Hollenbeck et al.
patent: 4846277 (1989-07-01), Khalil et al.
patent: 4861500 (1989-08-01), Hodge
patent: 5215596 (1993-06-01), Van Slyke
patent: 5373901 (1994-12-01), Norman et al.
patent: 5385206 (1995-01-01), Thomas
patent: 5591701 (1997-01-01), Thomas
patent: 5604186 (1997-02-01), Hunt et al.
patent: 5614473 (1997-03-01), Dino et al.
patent: 5990052 (1999-11-01), Harris
patent: 6113809 (2000-09-01), Dino et al.
patent: 6148932 (2000-11-01), Argillier et al.
patent: 6286601 (2001-09-01), Argillier et al.
patent: 6306800 (2001-10-01), Samuel et al.
patent: 6357527 (2002-03-01), Norman et al.
patent: 6454008 (2002-09-01), Chatterji et al.
patent: 6460632 (2002-10-01), Chatterji et al.
patent: 6729408 (2004-05-01), Hinkel et al.
patent: 6761220 (2004-07-01), Blauch et al.
SPE 73730 entitled “High-pH Clay Instability Rating”by Rick Gdanski dated 2002.
SPE 64983 entitled “Impact of Clay Acidity on the pH of invading Fluids” by Rick Gdanski dated 2001.
U.S. Appl. No. 10/396,606, entitled “Recyclable Foamed Fracturing Fluids and Methods of Using the Same,” inventors Jiten Chatterji et al., filed Mar. 25, 2003.
Chatterji Jiten
King Bobby J.
King Karen L.
Slabaugh Billy F.
Conley & Rose, P.C.
Halliburton Energy Service,s Inc.
Roddy Craig W.
Walker Zakiya
LandOfFree
Methods of fracturing a subterranean formation using a pH... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Methods of fracturing a subterranean formation using a pH..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods of fracturing a subterranean formation using a pH... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3467618