Wells – Processes – Cementing – plugging or consolidating
Reexamination Certificate
2006-05-10
2008-08-05
Bates, Zakiya W. (Department: 3676)
Wells
Processes
Cementing, plugging or consolidating
C166S293000, C166S300000, C166S302000
Reexamination Certificate
active
07407008
ABSTRACT:
Loss circulation fluids contain aqueous based compositions having at least one alkali metal formate and at least one thermally activated self-crosslinkable gel forming material, wherein the composition is easily transported to a loss circulation zone and yet has ability to close off the loss circulation zone once thermally activated to reduce the loss of circulation fluids into flow passages of a subterranean formation. In addition, packer fluids contain aqueous based compositions which contain at least one alkali metal formate and at least one thermally activated self-crosslinkable gel forming material, wherein the packer fluid forms a thermal insulating fully hydrated gel once thermally activated.
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Bates Zakiya W.
Cabot Specialty Fluids, Inc.
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