Wells – Processes – Placing fluid into the formation
Reexamination Certificate
2007-12-11
2007-12-11
Gay, Jennifer H. (Department: 3676)
Wells
Processes
Placing fluid into the formation
C166S307000, C166S263000
Reexamination Certificate
active
11279207
ABSTRACT:
Disclosed are acid fracturing methods for subterranean siliceous formations employing a viscous dissolving fluid to create a permeable conduit that bypasses the near wellbore damage. The viscous dissolving fluids used according to the invention are acid-fracturing treatment fluids containing a dissolving agent viscosified with a material such as a viscoelastic surfactant, and the fluid is injected into a sandstone formation at a pressure sufficient to create a hydraulic fracture. Also, the viscous dissolving fluid leaks off into the faces of the fracture thus “stimulating” the formation. Hence when the hydraulic fracture has closed there is a part of the formation that has been effectively stimulated, creating a pathway for fluids to preferentially flow to the wellbore. The formation may then be flowed back to produce a substantial volume of the treatment fluid.
REFERENCES:
patent: 2300393 (1942-11-01), Ayers, Jr.
patent: 4090563 (1978-05-01), Lybarger et al.
patent: 4160483 (1979-07-01), Thomas et al.
patent: 4703803 (1987-11-01), Blumer
patent: 5282995 (1994-02-01), Paul et al.
patent: 6435277 (2002-08-01), Qu et al.
patent: 6806236 (2004-10-01), Frenier et al.
patent: 6924255 (2005-08-01), Chang et al.
patent: 7114567 (2006-10-01), Chan
patent: 7165613 (2007-01-01), Chan et al.
patent: 2004/0009882 (2004-01-01), Fu
patent: 2004/0138071 (2004-07-01), Gupta et al.
patent: 2004/0254079 (2004-12-01), Frenier et al.
patent: 2005/0113263 (2005-05-01), Brown et al.
patent: 2005/0176604 (2005-08-01), Lee et al.
patent: 2007/0102155 (2007-05-01), Chan
Milne Arthur
Soler Diego
Cate David
Fonseca Darla
Gay Jennifer H.
Leonard Kerry W.
Nava Robin
LandOfFree
Method for treating a subterranean formation 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 treating a subterranean formation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for treating a subterranean formation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3848712