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1. (WO2019032250) POLYURETHANES FOR WATER SHUT-OFF IN OIL AND GAS WELLS
Latest bibliographic data on file with the International BureauSubmit observation

Pub. No.: WO/2019/032250 International Application No.: PCT/US2018/042436
Publication Date: 14.02.2019 International Filing Date: 17.07.2018
IPC:
C08G 18/78 (2006.01) ,C08G 18/79 (2006.01) ,C08G 18/32 (2006.01) ,C08G 18/48 (2006.01) ,C09K 8/00 (2006.01) ,C09K 8/50 (2006.01)
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
18
Polymeric products of isocyanates or isothiocyanates
06
with compounds having active hydrogen
70
characterised by the isocyanates or isothiocyanates used
72
Polyisocyanates or polyisothiocyanates
77
having hetero atoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
78
Nitrogen
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
18
Polymeric products of isocyanates or isothiocyanates
06
with compounds having active hydrogen
70
characterised by the isocyanates or isothiocyanates used
72
Polyisocyanates or polyisothiocyanates
77
having hetero atoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
78
Nitrogen
79
characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
18
Polymeric products of isocyanates or isothiocyanates
06
with compounds having active hydrogen
28
characterised by the compounds used containing active hydrogen
30
Low-molecular-weight compounds
32
Polyhydroxy compounds; Polyamines; Hydroxy amines
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
18
Polymeric products of isocyanates or isothiocyanates
06
with compounds having active hydrogen
28
characterised by the compounds used containing active hydrogen
40
High-molecular-weight compounds
48
Polyethers
C CHEMISTRY; METALLURGY
09
DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
K
MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
8
Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
C CHEMISTRY; METALLURGY
09
DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
K
MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
8
Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
50
Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
Applicants:
COVESTRO LLC [US/US]; 1 Covestro Circle Pittsburgh, Pennsylvania 15205, US
Inventors:
ZIELINSKI, David P.; US
JEFFRIES, Michael; US
MAXIN, Amy; US
Agent:
MROZINSKI, Jr., John E.; US
Priority Data:
62/542,33908.08.2017US
Title (EN) POLYURETHANES FOR WATER SHUT-OFF IN OIL AND GAS WELLS
(FR) POLYURÉTHANES POUR L'ARRÊT DE L'ÉCOULEMENT DE L'EAU DANS DES PUITS DE PÉTROLE ET DE GAZ
Abstract:
(EN) The present invention provides methods and materials for treating an oil and gas well by introducing a polyurethane composition into the well to plug perforations and other non-productive zones of an oil and gas well to greatly reduce or prevent the ingress of formation water during production. These methods include: (a) preparing a polyurethane composition by mixing a polyol-containing component and a polyisocyanate-containing component; and (b) introducing the polyurethane composition into the well. The polyol-containing component includes a polymeric polyol having a viscosity at 25°C of no m ore than 1000 mPa∙s and the isocyanate-containing component includes an unblocked (cyclo)aliphatic polyisocyanate polymer, optionally including allophanate groups, and having a viscosity at 25°C of no more t han 1000 mPa∙s and at least 99% solids content.
(FR) La présente invention concerne des procédés et des matériaux permettant de traiter un puits de pétrole et de gaz en introduisant une composition de polyuréthane dans le puits pour boucher des perforations et d'autres zones non productrices d'un puits de pétrole et de gaz pour réduire considérablement ou empêcher l'entrée d'eau de formation pendant la production. Ces procédés consistent à : (a) préparer une composition de polyuréthane en mélangeant un constituant contenant un polyol et un constituant contenant un polyisocyanate ; et (b) introduire la composition de polyuréthane dans le puits. Le constituant contenant un polyol comprend un polyol polymère présentant une viscosité à 25°C inférieure ou égale à 1 000 mPa.s et le constituant contenant un isocyanate comprend un polymère polyisocyanate (cyclo)aliphatique non bloqué, comprenant éventuellement des groupes allophanate, et présentant une viscosité à 25°C inférieure ou égale à 1 000 mPa.s et une teneur en matière sèche d'au moins 99 %.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)