Lost circulation fluid for oil field drilling operations

C - Chemistry – Metallurgy – 09 – K

Patent

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31/23

C09K 8/88 (2006.01) E21B 21/00 (2006.01)

Patent

CA 2016417

A flowing crosslinked polymer gel is employed as a lost circulation fluid in a process for reducing lost circulation during an oil field drilling operation. The lost circulation fluid comprises a carboxylate-containing polymer, a chromic carboxylate crosslinking agent, and an aqueous solvent.

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