Wells – Processes – Cementing – plugging or consolidating
Patent
1985-05-28
1987-01-06
Suchfield, George A.
Wells
Processes
Cementing, plugging or consolidating
166294, 175 72, 252 8512, E21B 33138
Patent
active
046339507
ABSTRACT:
The invention is a method for reducing lost circulation of aqueous or oil based drilling fluids wherein one or more hydrocarbon absorbent polymers are dispersed in an aqueous carrier fluid which is injected into the lost circulation zone. The aqueous carrier fluid initially prevents hydrocarbon from contacting the hydrocarbon absorbent polymer until such contact is desired. Once the aqueous polymer slug is properly placed at the lost circulation zone, a hydrocarbon is mixed with the aqueous slug so that the polymer will expand with the absorbed hydrocarbon and substantially increase in size to close off the lost circulation zone.
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Delhommer Harold J.
Walker Clarence O.
Delhommer Harold J.
Park Jack H.
Priem Kenneth R.
Suchfield George A.
Texaco Inc.
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