Wells – Processes – Heating – cooling or insulating
Reexamination Certificate
2006-01-24
2006-01-24
Suchfield, George (Department: 3676)
Wells
Processes
Heating, cooling or insulating
C166S304000, C166S312000, C507S266000, C507S927000, C507S929000
Reexamination Certificate
active
06988552
ABSTRACT:
A method to clean the wellbore and the near wellbore formation adjacent to the wellbore of the gas bearing formation adjacent to the production zone of the wellbore. The method includes the steps of injecting a treatment liquid containing from 84.5 to 100% of liquid carbon dioxide, 0 to 15% of an alcohol, and 0 to 0.5% of a surfactant into the well in a predetermined quantity and maintaining the pressure of the treatment liquid in the near wellbore formation of the gas bearing formation below the fracturing pressure of the formation, releasing the pressure on the wellbore and allowing the liquid CO2to vaporize and other materials to blow out of the well.
REFERENCES:
patent: 3368627 (1968-02-01), Hurst et al.
patent: 3765488 (1973-10-01), Pence, Jr.
patent: 3954636 (1976-05-01), Crowe et al.
patent: 4390068 (1983-06-01), Patton et al.
patent: 4501675 (1985-02-01), Malloy et al.
patent: 4519455 (1985-05-01), Holtmyer et al.
patent: 4617993 (1986-10-01), Brown
patent: 4628999 (1986-12-01), Kiss et al.
patent: 4679627 (1987-07-01), Harrison
patent: 5099924 (1992-03-01), Gidley
patent: 5168930 (1992-12-01), Wiseman et al.
patent: 5358046 (1994-10-01), Sydansk et al.
patent: 5394942 (1995-03-01), Catania et al.
patent: 6105672 (2000-08-01), Deruyter et al.
patent: 6505681 (2003-01-01), Catanla et al.
Gidley et al., “CO2overcomes sandstone acidizing problems”,Oil&Gas Journal, Sep. 30, 2002.
Mike Crabtree et al., “Fighting Scale-Removal and Prevention”, Oilfield Review, Autumn 1999, pp. 30-45.
Bell, Jr. Thomas A.
Wilson Dennis Ray
ConocoPhillips Company
Hitchcock Evert LLP
Suchfield George
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