Carboxymethylhydroxyethyl cellulose drilling, workover and...

Details Carboxymethylhydroxyethyl cellulose drilling, workover and... Carboxymethylhydroxyethyl cellulose drilling, workover and...

C - Chemistry, Metallurgy

09

K

31/26, 134/53

C09K 8/10 (2006.01) C08K 3/24 (2006.01) C09K 8/512 (2006.01) C09K 8/514 (2006.01)

Patent

CA 1131539

Abstract of the Disclosure Certain carboxymethylhydroxyethyl cellulose (CMHEC) solutions in water of various salinities are gelled by dichromate ion at a pH of about 5 or less, thus forming a drilling fluid or component thereof. In an embodiment a CMHEC water solution is gelled using an alkali metal dichromate, e.g., Na2CR2O7?2H2O.

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