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1. (WO2014209485) A HIGH-TEMPERATURE HIGH-PRESSURE (HTHP) STABLE SYNTHETIC POLYMER FOR WATER BASED OIL-WELL SERVICING FLUIDS

Pub. No.:    WO/2014/209485    International Application No.:    PCT/US2014/035665
Publication Date: Thu Jan 01 00:59:59 CET 2015 International Filing Date: Tue Apr 29 01:59:59 CEST 2014
IPC: C08F 220/56
C09K 8/512
C08F 226/08
Applicants: ISP INVESTMENTS INC.
Inventors: WANG, Janice Jianzhao
MELBOUCI, Mohand
LYNN, Jeffrey
LEI, Cuiyue
OSAMA, Musa M.
Title: A HIGH-TEMPERATURE HIGH-PRESSURE (HTHP) STABLE SYNTHETIC POLYMER FOR WATER BASED OIL-WELL SERVICING FLUIDS
Abstract:
Stable water based High-Temperature-High-Pressure (HTHP) and/or Non-HTHP crosslinked copolymers for oil and gas applications consist of (i) a crosslinked, linear polyvinyl amide/polymerizable carboxylic acid) copolymer, having a composition, by weight, of 25-75 wt. % of a vinyl amide monomer selected from vinyl pyrrolidone, vinyl caprolactam, N-vinyl-N-methylacetamide and mixtures thereof, and 25-75 wt. % of a polymerizable carboxylic acid monomer selected from acrylic acid, (meth)acrylic acid, crotonic acid, itaconic acid, maleic acid and mixture thereof; and (ii) a crosslinker in an amount of 0.01-5% based on weight of total monomers. Also discloses relevant compositions comprising said copolymer and method of use thereof.