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1. (WO2018085404) WATER-BASED SEALING COMPOSITIONS WITH AMINOSILANE CROSSLINKERS

Pub. No.:    WO/2018/085404    International Application No.:    PCT/US2017/059537
Publication Date: Sat May 12 01:59:59 CEST 2018 International Filing Date: Thu Nov 02 00:59:59 CET 2017
IPC: C09K 8/44
C09K 8/508
C09K 8/512
C08L 35/00
Applicants: SAUDI ARABIAN OIL COMPANY
ARAMCO SERVICES COMPANY
Inventors: REDDY, B. Raghava
HILFIGER, Matthew Gary
Title: WATER-BASED SEALING COMPOSITIONS WITH AMINOSILANE CROSSLINKERS
Abstract:
Treating a subterranean formation with a composition including a maleic anhydride copolymer and an aminosilane crosslinker. The maleic anhydride copolymer includes first repeat units I and II and at least one of second repeat units III and IV, where each R1 is independently -H, -O(C1-C?5) alkyl, or -(C1-C5) alkyl; each R2 is independently-H, -O(C1-C5) alkyl, or -(C1-C5) alkyl; each R3 is independently -OH or -O-M1, each M1 is independently an alkali metal, an alkaline earth metal, an ammonium ion, or a quaternary ammonium ion; and each R4 is independently-NH2 or -OM1. The aminosilane crosslinker has at least one primary amine group. Siloxane bonds may be formed between the aminosilane crosslinker and a siliceous material in contact with the gelled composition in the subterranean formation.