- Patent Number:
11987,744
- Appl. No:
18/452258
- Application Filed:
August 18, 2023
- نبذة مختصرة :
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): [chemical expression included] Injecting the injection fluid into the subterranean formation, said cross-linked (co)polymer PR forming a hydrogel in the presence of water.
- Inventors:
SNF Group (Andrezieux Boutheon, FR)
- Assignees:
SNF GROUP (Andrezieux Boutheon, FR)
- Claim:
1. A method for modifying 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 non-cross-linked (co)polymer NR, a lipophilic phase, at least one interface polymer composed of at least one monomer of formula (I): [chemical expression included] in which, R1, R2, R3 are independently selected from the group consisting of a hydrogen atom, a methyl group and Z—X, Z is selected from the group consisting of 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 having from 1 to 20 carbon atoms which may have one or more heteroatoms selected from nitrogen and oxygen, X is a group chosen from alkanolamides, sorbitan esters, ethoxylated sorbitan esters, glyceryl esters, and polyglycosides; and comprising a saturated or unsaturated, linear, branched or cyclic, optionally aromatic, hydrocarbon chain, injecting the injection fluid and a cross-linking agent for the (co)polymer NR into a subterranean formation, said (co)polymer NR, once cross-linked, forming a hydrogel in the presence of water.
- Claim:
2. The method according to claim 1 , wherein the (co)polymer NR is obtained from at least one non-ionic monomer and/or at least one anionic monomer and/or at least one cationic monomer and/or at least one zwitterionic monomer.
- Claim:
3. The method according to claim 2 , wherein the non-ionic monomer is selected from the group consisting of acrylamide, methacrylamide, N-isopropylacrylamide, N,N-dimethylacrylamide, N-methylolacrylamide, N-vinylformamide, N-vinylacetamide, N-vinylpyridine, N-vinylpyrrolidone, acryloyl morpholine, glycidyl methacrylate, glyceryl methacrylate and diacetone acrylamide.
- Claim:
4. The method according to claim 2 , wherein the anionic monomer is chosen from the group consisting of salts of 3-sulphopropyl methacrylate, and unsalified, partially or totally salified monomers chosen from acrylic acid, methacrylic acid, itaconic acid, maleic acid, acrylamido tertiary butyl sulphonic acid, vinylsulphonic acid, and vinylphosphonic acid.
- Claim:
5. The method according to claim 1 , wherein the interface polymer comprises, in addition to the monomer of formula (I), at least one non-ionic monomer and/or at least one anionic monomer and/or at least one cationic monomer.
- Claim:
6. The method according to claim 1 , wherein the monomer of formula (I) has the following formula: [chemical expression included] in which, R1, R2, R3, independently, are a hydrogen atom or a methyl group, Z is selected from the group consisting of CH 2 , C(═O)—O, C(═O)—NH, and —(C═O)—O—CH 2 —CH(OH)—CH 2 , X is a group chosen from alkanolamides and sorbitan esters, and comprising a saturated or unsaturated, linear, branched or cyclic, optionally aromatic, hydrocarbon chain.
- Claim:
7. The method according to claim 1 , wherein the monomer of formula (I) is selected from sorbitan monooleate (meth)acrylate, 2-hydroxypropyl (meth)acrylate of diethanolamide monooleate or sorbitan monooleate glyceryl (meth)acrylate.
- Claim:
8. The method according to claim 1 , wherein the monomer of formula (I) has the following formula: [chemical expression included]
- Claim:
9. The method according to claim 1 , wherein the (co)polymer comprises at least one associative cationic monomer and/or at least one LCST group.
- Claim:
10. The method according to claim 2 , wherein the monomer of formula (I) is selected from sorbitan monooleate (meth)acrylate, 2-hydroxypropyl (meth)acrylate of diethanolamide monooleate or sorbitan monooleate glyceryl (meth)acrylate.
- Claim:
11. The method according to claim 8 , wherein the (co)polymer NR is obtained from at least one non-ionic monomer and/or at least one anionic monomer and/or at least one cationic monomer and/or at least one zwitterionic monomer, and wherein: the non-ionic monomer is selected from the group consisting of acrylamide, methacrylamide, N-isopropylacrylamide, N,N-dimethylacrylamide, N-methylolacrylamide, N-vinylformamide, N-vinylacetamide, N-vinylpyridine, N-vinylpyrrolidone, acryloyl morpholine, glycidyl methacrylate, glyceryl methacrylate and diacetone acrylamide; and the anionic monomer is chosen from the group consisting of salts of 3-sulphopropyl methacrylate, and unsalified, partially or totally salified monomers chosen from acrylic acid, methacrylic acid, itaconic acid, maleic acid, acrylamido tertiary butyl sulphonic acid, vinylsulphonic acid, and vinylphosphonic acid.
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- Other References:
International Search Report (and English translation) and Written Opinion of the International Searching Authority for International Application No. PCT/FR2020/050134 mailed on May 4, 2020. cited by applicant
Griffin, W.C., “Classification of Surface-Active Agents by ‘HLB’”, Journal of the Society of Cosmetic Chemists 1 (1949): 311-326. cited by applicant
- Primary Examiner:
Nold, Charles R
- Attorney, Agent or Firm:
Heslin Rothenberg Farley & Mesiti P.C.
- الرقم المعرف:
edspgr.11987744
No Comments.