Wells – Processes – Chemical inter-reaction of two or more introduced materials
Reexamination Certificate
2007-01-02
2007-01-02
Suchfield, George (Department: 3676)
Wells
Processes
Chemical inter-reaction of two or more introduced materials
C166S305100, C166S307000, C166S309000, C166S312000, C507S202000, C507S267000, C507S260000, C507S244000, C507S251000, C507S272000
Reexamination Certificate
active
10789712
ABSTRACT:
The present invention relates to methods of chemically generating gas in aqueous fluids utilized in the drilling and completion of wells such as drilling fluids, spacer fluids, and aqueous acid solutions. In one embodiment, the invention provides a method of preventing the formation of fractures in a subterranean formation during a drilling operation. In other embodiments, the present invention provides methods of separating a first fluid and a second fluid in a subterranean formation; methods of forming lightweight well treatment fluids; methods of enhancing the permeability of a subterranean zone; lightweight drilling fluids; lightweight spacer fluids; foamed aqueous acidic well treatment fluids; and methods of making foamed aqueous and aqueous acidic well treatment fluids.
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Cox Ricky A.
Dennis, Jr. John L.
Griffith James E.
Luke Karen
Ravi Krishna M.
Baker Botts, L.L.p.
Halliburton Energy Service,s Inc.
Roddy Craig W.
Suchfield George
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