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1. (WO2013162902) SYNERGISTIC COMBINATION OF A FLUID LOSS ADDITIVE AND RHEOLOGY MODIFIER

Pub. No.:    WO/2013/162902    International Application No.:    PCT/US2013/036110
Publication Date: Fri Nov 01 00:59:59 CET 2013 International Filing Date: Fri Apr 12 01:59:59 CEST 2013
IPC: C09K 8/487
Applicants: ISP INVESTMENTS INC
Inventors: ZHENG, Jun
WANG, Janice, Jianzhao
FARRAR, David
SILVER, Catherine
COCKCROFT, Bob
Title: SYNERGISTIC COMBINATION OF A FLUID LOSS ADDITIVE AND RHEOLOGY MODIFIER
Abstract:
Compositions containing a synergistic combination of polymers with high fluid loss control and excellent retention of rheological properties even under HPHT conditions. In accordance with certain aspects, the present application is directed to a dispersion polymerization process and chemistry modification to make fluid loss control and rheology modifier polymers. Moreover, the fluid loss additives and rheology modifiers disclosed herein can be delivered to the field as water dispersions or dry powders, either separately or blended together, to facilitate handling and processing.