Wells – Processes – Cementing – plugging or consolidating
Patent
1994-04-29
1995-08-08
Suchfield, George A.
Wells
Processes
Cementing, plugging or consolidating
166283, 166294, 175 72, 507114, 507216, 507903, E21B 2100, E21B 4325, E21B 4326
Patent
active
054390575
ABSTRACT:
The present invention provides a method of controlling fluid loss to a permeable formation penetrated by a wellbore. A novel fluid loss agent is prepared by forming a crosslinked polymer gel which then is sheared to break the gel into discrete particles. A slurry then is formed of the particles by dispersing the particles in an aqueous fluid having a density similar to that of the gel particles. The slurry then is introduced into contact with the permeable formation and a filter cake of the particles is formed upon contact with the formation and loss of the slurrying fluid to the formation. The filter cake provides further fluid loss control to the permeable formation.
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Himes Ronald E.
Weaver Jimmie D.
Halliburton Company
Kent Robert A.
Suchfield George A.
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