Clean-up additive for viscoelastic surfactant based fluids

Details Clean-up additive for viscoelastic surfactant based fluids Clean-up additive for viscoelastic surfactant based fluids

2006-05-09

2010-02-02

Kugel, Timothy J. (Department: 1796)

Earth boring, well treating, and oil field chemistry

Well treating

Contains organic component

C507S200000, C166S305100

Reexamination Certificate

active

07655603

ABSTRACT:
Clean-up additive compositions may be used to enhance the clean-up of VES-gelled aqueous fluids in a wide range of applications and VES fluid compositions, including use of an internal breaker system. The compositions are microemulsions that may include, but not necessarily be limited to, at least one viscosity reducing agent, at least one solubilizing agent, at least one desorption agent and at least one water wetting agent. One non-limiting embodiment of a specific microemulsion includes an unsaturated fatty acid oil, a glycol, a sorbitan ester/ethoxylated sorbitan ester mixture, and an alkyl sulfonate. Microemulsions may perform one or more of the following functions: keeping the reservoir water wet; keeping surface tension reduction low; demulsifying reservoir crude oils and aqueous VES fluids; dispersing and solubilizing the by-products generated when breaking the VES gel; and/or limiting the amount of VES residue on reservoir minerals.

REFERENCES:
patent: 2290415 (1942-07-01), De Groote
patent: 2363048 (1944-11-01), Keiser et al.
patent: 3504744 (1970-04-01), Davis et al.
patent: 3710865 (1973-01-01), Kiel
patent: 3721633 (1973-03-01), Ranauto
patent: 3808311 (1974-04-01), Olson, Jr. et al.
patent: 4123395 (1978-10-01), Maguire, Jr. et al.
patent: 4154706 (1979-05-01), Kenkare et al.
patent: 4396520 (1983-08-01), Payne et al.
patent: 4447344 (1984-05-01), Roe
patent: 4663069 (1987-05-01), Llenado
patent: 5759409 (1998-06-01), Knauf et al.
patent: 6001795 (1999-12-01), Charlez et al.
patent: 6348509 (2002-02-01), Reeve
patent: 6613720 (2003-09-01), Feraud et al.
patent: 6672388 (2004-01-01), McGregor et al.
patent: 6855260 (2005-02-01), Yoon
patent: 6881709 (2005-04-01), Nelson et al.
patent: 6887839 (2005-05-01), Smith et al.
patent: 6908888 (2005-06-01), Lee et al.
patent: 7084095 (2006-08-01), Lee et al.
patent: 7216709 (2007-05-01), McElfresh et al.
patent: 7380606 (2008-06-01), Pursley et al.
patent: 2001/0036905 (2001-11-01), Parlar et al.
patent: 2003/0166472 (2003-09-01), Pursley et al.
patent: 2006/0041028 (2006-02-01), Crews
patent: 1388909 (1975-03-01), None
J. Paktinat, et al., “Microemulsion Reduces Adsorption and Emulsion Tendencies in Bradford and Speechley Sandstone Formations,” 2005 SPE International Symposium on Oilfield Chemistry, Feb. 2-4, 2005, SPE 93270, Houston, TX, USA.
G. Penny, et al., “The Application of Microemulsion Additives in Drilling and Stimulation Results in Enhanced Gas Production,” 2005 SPE Production and Operations Symposium, Apr. 17-19, 2005, SPE 93270, Oklahoma City, OK, USA.
Baker Hughes [Internet], “Drilling Fluid and Stimulation Additives: Demulsifiers: Oxyalkylated Phenolic Resins,” [cited May 5, 2005] Available from: http://www.bakerhughes.com/bakerpetrolite/drilling—stimulation/intermediates/demulsifiers/Oxyalkylated—Phenolic—Resins/htm.
Baker Hughes [Internet], “Drilling Fluid and Stimulation Additives: Demulsifiers: Polyol Esters,” [cited May 5, 2005] Available from: http://www.bakerhughes.com/bakerpetrolite/drilling—stimulation/intermediates/demulsifiers/Polyol—Esters/htm.
PCT International Search Report for PCT International Application No. PCT/US2006/018815, Sep. 25, 2006.

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