Boring or penetrating the earth – With above-ground means for preparing or separating drilling...
Reexamination Certificate
2011-07-19
2011-07-19
Suchfield, George (Department: 3676)
Boring or penetrating the earth
With above-ground means for preparing or separating drilling...
C175S066000, C175S207000
Reexamination Certificate
active
07980329
ABSTRACT:
A method and system for drilling a wellbore is described. The system includes a wellbore with a variable density drilling mud, drilling pipe, a bottom hole assembly disposed in the wellbore and a drilling mud processing unit in fluid communication with the wellbore. The variable density drilling mud has compressible particles and drilling fluid. The bottom hole assembly is coupled to the drilling pipe, while the drilling mud processing unit is configured to separate the compressible particles from the variable density drilling mud. The compressible particles in this embodiment may include compressible hollow objects filled with pressurized gas and configured to maintain the mud weight between the fracture pressure gradient and the pore pressure gradient. In addition, the system and method may also manage the use of compressible particles having different characteristics, such as size, during the drilling operations.
REFERENCES:
patent: 3174561 (1965-03-01), Sterrett
patent: 3231030 (1966-01-01), Blom
patent: 4216836 (1980-08-01), Rayborn
patent: 4217208 (1980-08-01), Wentzler
patent: 4571296 (1986-02-01), Lott
patent: 5881826 (1999-03-01), Brookey
patent: 6138757 (2000-10-01), Latos et al.
patent: 6235803 (2001-05-01), Weiser et al.
patent: 6415877 (2002-07-01), Fincher et al.
patent: 6451953 (2002-09-01), Albright
patent: 6530437 (2003-03-01), Maurer et al.
patent: 6588501 (2003-07-01), Boyadjieff
patent: 6610798 (2003-08-01), Bleijenberg et al.
patent: 6689465 (2004-02-01), Omori et al.
patent: 6739408 (2004-05-01), Rowden
patent: 6747107 (2004-06-01), Petela et al.
patent: 6953097 (2005-10-01), Seyffert
patent: 7108066 (2006-09-01), Jamison
patent: 7264051 (2007-09-01), Nguyen et al.
patent: 7334636 (2008-02-01), Nguyen
patent: 7361693 (2008-04-01), Albright et al.
patent: 7494711 (2009-02-01), Kaufman et al.
patent: 7677332 (2010-03-01), Spiecker et al.
patent: 2002/0011338 (2002-01-01), Maurer et al.
patent: 2003/0164235 (2003-09-01), Leeson et al.
patent: 2003/0196804 (2003-10-01), Riet
patent: 2004/0033905 (2004-02-01), Shinbach et al.
patent: 2004/0089591 (2004-05-01), Marcotullio et al.
patent: 2004/0154963 (2004-08-01), Rayborn
patent: 2005/0023038 (2005-02-01), Seyffert
patent: 2005/0113262 (2005-05-01), Ravi et al.
patent: 2005/0161262 (2005-07-01), Jamison
patent: 2005/0284641 (2005-12-01), Watkins et al.
patent: 2006/0070772 (2006-04-01), deBoer
patent: 2006/0213663 (2006-09-01), Vargo, Jr. et al.
patent: 2006/0217270 (2006-09-01), Vargo, Jr. et al.
patent: 2006/0254775 (2006-11-01), Jamison
patent: 2007/0027036 (2007-02-01), Polizzotti et al.
patent: 2008/0300339 (2008-12-01), Wright et al.
patent: 2009/0114450 (2009-05-01), Watkins et al.
patent: 2009/0151944 (2009-06-01), Fuller et al.
patent: 2009/0163388 (2009-06-01), Reddy et al.
patent: WO 2006/007347 (2006-01-01), None
European Search ReportNo. 113773, dated Sep. 15, 2006.
International Search Report and Written Opinion, dated Dec. 28, 2007.
Carstensen Barbara
Entchev Pavlin B.
Gupta Ramesh
Peiffer Dennis G.
Pokutylowicz Norman
ExxonMobil Upstream Research Company
Suchfield George
LandOfFree
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