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公开(公告)号：US10113099B2
公开(公告)日：2018-10-30
申请号：US14766507
申请日：2014-02-18
Applicant: ISP INVESTMENTS INC.
Inventor： Janice Jianzhao Wang , Jun Zheng , Mohand Melbouci
Abstract: What is described herein is an aqueous high-temperature high-pressure (HTHP) stable drilling mud composition comprising (i) about 20 wt. % to about 80 wt. % of 0-60% w/w brine solution; (ii) about 0.1 wt. % to about 3 wt. % of butylated reaction product of p-cresol and dicyclopentadiene, a polymeric hindered phenol based antioxidant; (iii) about 0.1 wt. % to about 10.0 wt. % of triethanol amine, a chelating agent; (iv) (a) about 0.1 wt. % to about 10 wt. % of rheology modifier (RM); and/or (b) about 0.5 wt. % to about 30 wt. % of fluid loss additive (FLA); (v) about 20 wt. % to about 80 wt. % of weighting agent; (vi) about 0 wt. % to about 20 wt. % of drilling solid; and (vii) about 0 wt. % to about 50 wt % of water.
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公开(公告)号：US10202533B2
公开(公告)日：2019-02-12
申请号：US14911114
申请日：2014-04-28
Applicant: ISP INVESTMENTS INC.
Inventor： Janice Jianzhao Wang , Mohand Melbouci , Jeffrey Lynn , Cuiyue Lei , Osama M. Musa
IPC: C09K8/12 , C09K8/035 , C08F226/10 , C09K8/512 , C09K8/42 , C09K8/508 , C09K8/528 , C09K8/588 , C09K8/60 , C09K8/68 , C09K8/88
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.
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