公开(公告)号：US11767460B2

公开(公告)日：2023-09-26

申请号：US17422840

申请日：2020-01-29

申请人： SNF Group

发明人： Cédrick Favero ,  Olivier Braun ,  Lionel Lauber

IPC分类号： C09K8/44 ,  E21B43/16

CPC分类号： C09K8/44

摘要： The invention relates to a method for modifying the water permeability of a subterranean formation, comprising at least the following steps:



Preparing an injection fluid from a dispersion of a hydrophilic phase in a lipophilic phase, with water or brine, the dispersion comprising:

a hydrophilic phase comprising at least one cross-linked (co)polymer PR,
a lipophilic phase,
at least one interface polymer composed of at least one monomer of formula (I):












Injecting the injection fluid into the subterranean formation, said cross-linked (co)polymer PR forming a hydrogel in the presence of water.

公开(公告)号：US11718783B2

公开(公告)日：2023-08-08

申请号：US16768355

申请日：2018-12-12

申请人： SNF Group

发明人： Olivier Braun ,  Lionel Lauber

IPC分类号： E21B43/16 ,  C09K8/588 ,  C09K8/584 ,  C08F22/00 ,  C08F220/56

CPC分类号： C09K8/588 ,  C08F220/56 ,  C09K8/584 ,  E21B43/16 ,  C08F2800/20

摘要： The invention concerns a method for preparing a dispersion of a hydrophilic phase in a lipophilic phase, comprising:—a hydrophilic phase comprising at least one water-soluble (co)polymer, —a lipophilic phase, —at least one interface polymer consisting of at least one monomer of formula (I): Formula (I) in which, —R1, R2, R3 are separately a hydrogen atom, a methyl group, a carboxylate group and Z—X, —Z is chosen from the group comprising C(═O)—O; C(═O)—NH; O—C(═O); NH—C(═O)—NH; NH—C(═O)—O; and a saturated or unsaturated, substituted or unsubstituted carbon chain comprising 1 to 20 carbon atoms capable of comprising one or more heteroatoms chosen from nitrogen and oxygen, —X is a group chosen from the alkanolamides, sorbitan esters, ethoxylated sorbitan esters, glyceryl esters, and polyglycosides; and comprising a saturated or unsaturated, linear, branched or cyclic, optionally aromatic, hydrocarbon chain.

公开(公告)号：US20230240952A1

公开(公告)日：2023-08-03

申请号：US18044015

申请日：2021-09-06

申请人： SNF Group

发明人： Frédéric BLONDEL ,  Dimitri MATIOSZEK

IPC分类号： A61K8/34 ,  C08F220/58 ,  C08F220/06 ,  A61K8/81 ,  A61Q17/00

CPC分类号： A61K8/34 ,  C08F220/585 ,  C08F220/06 ,  A61K8/345 ,  A61K8/8147 ,  A61K8/8158 ,  A61Q17/005 ,  C08F2810/20 ,  C08F2800/10 ,  A61K2800/48

摘要： This invention relates to the use, for the manufacture of a hydroalcoholic composition comprising at least water and at least one alcohol of a branched or cross-linked copolymer obtained from:



(i) 20 mol % to 94.99 mol % of at least one monomer containing an acrylic group and bearing at least one weak acid function,
(ii) 5 mol % to 79.99 mol % of at least one monomer bearing at least one strong acid function,
(iii) 0.01 mol % to 4 mol % of a cross-linking/branching agent,
said copolymer being obtained by precipitation polymerization, in a solvent comprising at least one alcohol.

公开(公告)号：US20240254384A1

公开(公告)日：2024-08-01

申请号：US18562598

申请日：2022-07-08

申请人： SNF Group

发明人： Cédrick FAVERO ,  Johann KIEFFER

IPC分类号： C09K8/88 ,  C09K8/42

CPC分类号： C09K8/882 ,  C09K8/424

摘要： A method is for obtaining a bio-sourced (meth)allylsulfonate alkali salt obtained from a (meth)allyl halide. The (meth)allyl halide is at least partially renewable and non-fossil. A (co)polymer can be obtained from the bio-sourced (meth)allylsulfonate alkali salt. The (co)polymer can be used in a method for enhanced oil and/or gas recovery by sweeping a subterranean formation.

公开(公告)号：US20240034822A1

公开(公告)日：2024-02-01

申请号：US18349309

申请日：2023-07-10

申请人： SNF Group

发明人： Cédrick FAVERO ,  Johann KIEFFER ,  Nicolas BOISSE ,  Jing LING

IPC分类号： C08F220/58 ,  C08L33/26 ,  C02F1/52 ,  D21H17/45

CPC分类号： C08F220/585 ,  C08L33/26 ,  C02F1/5272 ,  D21H17/455

摘要： Provided is a polymer composition containing a water-soluble cationic copolymer P2 structured in micro-blocks obtained by radical polymerization of at least one non-ionic monomer and at least one cationic monomer, in the presence of a homopolymer P1 having an average molecular weight between 5,000 and 100,000 daltons, the homopolymer P1 having been prepared from 2-acrylamido-2-methylpropane sulphonate in salified form and in the presence of 200 to 20,000 ppm by weight of 2-methyl-2-propenyl-sulphonic acid in salified form. Related methods are also provided.

公开(公告)号：US11802109B2

公开(公告)日：2023-10-31

申请号：US17447754

申请日：2021-09-15

申请人： SNF GROUP

发明人： Cédrick Favero ,  Johann Kieffer ,  Benoît Legras ,  Raphaël Doudin

IPC分类号： C07C303/44 ,  C08F20/58 ,  C02F1/56 ,  C02F1/54 ,  C02F1/52

CPC分类号： C07C303/44 ,  C02F1/5272 ,  C02F1/56 ,  C08F20/58

摘要： The invention relates to a method for the purification of acrylamido-2-methyl-2-propanesulphonic acid comprising the following successive steps:



1) preparation of a suspension of acrylamido-2-methyl-2-propanesulphonic acid crystals by distillation of an aqueous solution of acrylamido-2-methyl-2-propanesulphonic acid in order to obtain a suspension of acrylamido-2-methyl-2-propanesulphonic acid crystals,
2) isolation of the acrylamido-2-methyl-2-propanesulphonic acid crystals generally by solid/liquid separation from said suspension in order to isolate said acrylamido-2-methyl-2-propanesulphonic acid crystals,


characterised in that the distillation step is carried out continuously and at a pressure below atmospheric pressure.


The invention also relates to a polymer obtained from acrylamido-2-methyl-2-propanesulphonic acid crystals or its salts, obtained according to such a method, and to the use of said polymer in oil and gas recovery, in water treatment, in sludge treatment, in manufacturing paper, in construction, in mining, in cosmetic formulation, in detergent formulation, in textile making, or in agriculture.

公开(公告)号：US12091480B2

公开(公告)日：2024-09-17

申请号：US17041746

申请日：2018-04-12

申请人： SNF GROUP

发明人： Cédrick Favero ,  Johann Kieffer ,  Jing Ling

IPC分类号： C08F220/34 ,  C07C213/08 ,  C07C213/10 ,  C07C219/08

CPC分类号： C08F220/34 ,  C07C213/08 ,  C07C213/10 ,  C07C219/08

摘要： Process for the production of 2-dimethylaminoethyl (meth)acrylate in multiple stage batch reactions involving the recycling of the catalyst (DBTO) in subsequent reaction, the addition a certain amount of fresh catalyst to the recycled catalyst, the use of said catalysts in the subsequent reaction, and wherein the volume decrease due to azeotropic distillation is compensate in order to keep the volume constant in the reactor during the reaction by the continuous addition of a composition comprising methyl(meth)acrylate and dimethylaminoethanol.

公开(公告)号：US20240199939A1

公开(公告)日：2024-06-20

申请号：US18556603

申请日：2022-04-13

申请人： SNF Group

发明人： Olivier BRAUN ,  Bruno GIOVANNETTI ,  Farag MUHAMMED

IPC分类号： C09K8/12 ,  C08F220/58 ,  C09K8/52 ,  E21B21/06

CPC分类号： C09K8/12 ,  C08F220/585 ,  C09K8/52 ,  E21B21/062 ,  C08F2800/10 ,  C09K2208/10

摘要： This invention relates to a water-soluble associative amphoteric polymer and its use as a subterranean drilling or treatment fluid, for example in the fields of subterranean hydrocarbon recovery, construction, or geothermal energy.

公开(公告)号：US20240132711A1

公开(公告)日：2024-04-25

申请号：US18481832

申请日：2023-10-05

申请人： SNF GROUP

发明人： Cédrick FAVERO ,  Johann KIEFFER ,  Nicolas BOISSE ,  Jing LING

IPC分类号： C08L33/26 ,  C08F220/56 ,  C09K8/588 ,  C09K8/62 ,  E21B43/20

CPC分类号： C08L33/26 ,  C08F220/56 ,  C09K8/588 ,  C09K8/62 ,  E21B43/20 ,  C08L2205/025

摘要： This invention relates to a polymer composition comprising a water-soluble anionic P2 polymer obtained by radical polymerization of at least one anionic monomer, in the presence of a water-soluble homopolymer P1 with a weight-average molecular weight of between 5,000 and 100,000 daltons
said water-soluble anionic P2 polymer having a weight-average molecular weight of greater than 100,000 dalton and less than or equal to 40 million daltons,

said water-soluble P1 homopolymer having been prepared from 2-acrylamido-2-methylpropanesulphonic acid in salified form and in the presence of 200 to 20,000 ppm by weight of 2-methyl-2-propenylsulphonic acid in salified form.

公开(公告)号：US20230392066A1

公开(公告)日：2023-12-07

申请号：US18452258

申请日：2023-08-18

申请人： SNF Group

发明人： Cédrick FAVERO ,  Olivier BRAUN ,  Lionel LAUBER

IPC分类号： C09K8/44

CPC分类号： C09K8/44

摘要： The invention relates to a method for modifying the water permeability of a subterranean formation, comprising at least the following steps:



Preparing an injection fluid from a dispersion of a hydrophilic phase in a lipophilic phase, with water or brine, the dispersion comprising:

a hydrophilic phase comprising at least one cross-linked (co)polymer PR,
a lipophilic phase,
at least one interface polymer composed of at least one monomer of formula (I):












Injecting the injection fluid into the subterranean formation,
said cross-linked (co)polymer PR forming a hydrogel in the presence of water.