Earth boring – well treating – and oil field chemistry – Earth boring – Contains enzyme or living microorganism
Reexamination Certificate
2011-05-03
2011-05-03
Figueroa, John J (Department: 1765)
Earth boring, well treating, and oil field chemistry
Earth boring
Contains enzyme or living microorganism
C507S110000, C507S111000, C507S112000, C507S117000, C507S118000, C507S129000, C507S139000, C166S305100
Reexamination Certificate
active
07935660
ABSTRACT:
A process for producing a self-disrupting filter cake in an underground formation, which process comprises: (a) incorporating into a drilling fluid a solid polymer capable of being converted by hydrolysis into one or more organic acids; (b) using the drilling fluid to drill a wellbore into the underground formation such that the solid polymer in the drilling fluid contributes to the formation of a filter cake; and (c) allowing the solid polymer to hydrolyse in the presence of water and to disrupt the integrity of the filter cake. A drilling fluid which contains as a bridging agent one or more solid polymers capable of being converted by hydrolysis into one or more organic acids is also provided.
REFERENCES:
patent: 3974082 (1976-08-01), Weyn
patent: 4175042 (1979-11-01), Mondshine
patent: 4387769 (1983-06-01), Erbstoesser et al.
patent: 4526695 (1985-07-01), Erbstoesser et al.
patent: 4585482 (1986-04-01), Tice et al.
patent: 4848467 (1989-07-01), Cantu
patent: 4957165 (1990-09-01), Cantu
patent: 4961466 (1990-10-01), Himes
patent: 4986353 (1991-01-01), Clark et al.
patent: 4986354 (1991-01-01), Cantu et al.
patent: 4986355 (1991-01-01), Casad et al.
patent: 5108457 (1992-04-01), Poulose et al.
patent: 5201370 (1993-04-01), Tjon-Joe-Pin
patent: 5278256 (1994-01-01), Bellis et al.
patent: 5296161 (1994-03-01), Wiersema et al.
patent: 5325921 (1994-07-01), Johnson et al.
patent: 5338474 (1994-08-01), Kaiserman et al.
patent: 5352594 (1994-10-01), Poulouse
patent: 5364554 (1994-11-01), Stanislowski et al.
patent: 5439057 (1995-08-01), Weaver et al.
patent: 5547026 (1996-08-01), Brannon et al.
patent: 5678632 (1997-10-01), Moses et al.
patent: 5680900 (1997-10-01), Nguyen et al.
patent: 6131661 (2000-10-01), Conner et al.
patent: 6140277 (2000-10-01), Tibbles et al.
patent: 6143698 (2000-11-01), Murphey et al.
patent: 6394185 (2002-05-01), Constien
patent: 6401819 (2002-06-01), Harris et al.
patent: 6432885 (2002-08-01), Vollmer
patent: 6453545 (2002-09-01), Hatley et al.
patent: 6599863 (2003-07-01), Palmer
patent: 6605570 (2003-08-01), Miller et al.
patent: 6631764 (2003-10-01), Parlar et al.
patent: 6702023 (2004-03-01), Harris et al.
patent: 6763888 (2004-07-01), Harris et al.
patent: 6817414 (2004-11-01), Lee
patent: 7021383 (2006-04-01), Todd et al.
patent: 7195068 (2007-03-01), Todd
patent: 7265079 (2007-09-01), Willberg et al.
patent: 7482311 (2009-01-01), Willberg et al.
patent: 2002/0036088 (2002-03-01), Todd
patent: 2002/0076803 (2002-06-01), Crews
patent: 2002/0142919 (2002-10-01), Constien
patent: 2004/0094300 (2004-05-01), Sullivan et al.
patent: 2004/0106525 (2004-06-01), Willberg et al.
patent: 2005/0059556 (2005-03-01), Munoz, Jr. et al.
patent: 2005/0059557 (2005-03-01), Munoz, Jr. et al.
patent: 2006/0016596 (2006-01-01), Pauls et al.
patent: 2006/0105917 (2006-05-01), Munoz
patent: 2006/0105918 (2006-05-01), Munoz, Jr.
patent: 2006/0205608 (2006-09-01), Todd
patent: 2006/0229212 (2006-10-01), Willberg et al.
patent: 2007/0078064 (2007-04-01), Munoz, Jr. et al.
patent: 2007/0123433 (2007-05-01), Sarkar et al.
patent: 0 404 489 (1995-03-01), None
patent: 00/57022 (2000-09-01), None
patent: 2004/037946 (2004-05-01), None
patent: WO 2004/037946 (2004-06-01), None
patent: 2005/028587 (2005-03-01), None
http://chemfinder.cambridgesoft.com/result.asp for sodium chlorite, accessed Oct. 24, 2006.
International Search Report for PCT/GB2005/001193 mailed Jun. 16, 2005.
Harris Ralph Edmund
McKay Ian Donald
Cleansorb Limited
Figueroa John J
Nixon & Vanderhye
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