Wells – Processes – Placing fluid into the formation
Reexamination Certificate
2007-12-04
2007-12-04
Neuder, William (Department: 3672)
Wells
Processes
Placing fluid into the formation
C166S308200, C166S308300, C507S933000
Reexamination Certificate
active
10888494
ABSTRACT:
A method of acidizing a subterranean formation with a diverting agent composed of a gelled or thickened viscoelastic foam or fluid generated from (i.) an amidoamine oxide gelling agent and (ii.) an acid or foam, water and/or brine. The gelled or thickened foam or fluid may be generated in-situ or introduced directly into the formation by mixing of the amidoamine oxide gelling agent and acid or foam, water and/or brine. As the acid spends, the acidizing fluid thickens. When the acid is further spent, the fluid viscosity declines eventually returning to a low viscosity state, allowing for easy cleanup. The process allows for selective acidizing of less permeable zones of the formation and more uniform stimulation of the hydrocarbon bearing formation.
REFERENCES:
patent: 3724549 (1973-04-01), Dill
patent: 4324669 (1982-04-01), Norman et al.
patent: 4591447 (1986-05-01), Kubala
patent: 4695389 (1987-09-01), Kubala
patent: 4737296 (1988-04-01), Watkins
patent: 4960934 (1990-10-01), Smith et al.
patent: 5979552 (1999-11-01), Michael et al.
patent: 5979557 (1999-11-01), Card et al.
patent: 6239183 (2001-05-01), Farmer et al.
patent: 6258859 (2001-07-01), Dahayanake et al.
patent: 6367548 (2002-04-01), Purvis et al.
patent: 6399546 (2002-06-01), Chang et al.
patent: 6637517 (2003-10-01), Samuel et al.
patent: 6729408 (2004-05-01), Hinkel et al.
patent: 6903054 (2005-06-01), Fu et al.
patent: 7028775 (2006-04-01), Fu et al.
patent: 7060661 (2006-06-01), Dobson et al.
patent: 2002/0147114 (2002-10-01), Dobson, Sr. et al.
patent: 2003/0139298 (2003-07-01), Fu et al.
patent: 2005/0209108 (2005-09-01), Fu et al.
patent: 1109356 (1981-09-01), None
patent: 2 012 837 (1979-08-01), None
patent: 2 354 541 (2001-03-01), None
patent: 2 372 058 (2002-08-01), None
patent: WO 03/054352 (2003-07-01), None
patent: WO 03/093641 (2003-11-01), None
Wang, X., et al, “Application of Novel Diversion Acidizing Techniques To Improve Gas Production In Heterogeneous Formation”, Presented at the SPE International Symposium on Oilfield Chemistry, Houston, TX, Feb. 5-7, 2003 (SPE 80274).
Chang, F.F., et al, “Case Study of a Novel Acid-Diversion Technique in Carbonate Reservoirs”, Presented at the 1999 Annual Technical Conference and Exhibition, Houston, TX, Oct. 3-6, 1999 (SPE 5652).
Cawiezel Kay E.
Dawson Jeffrey C.
BJ Services Company
Coy Nicole A
Jones John Wilson
Jones & Smith, LLP
Neuder William
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