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    2.
    发明专利
    未知

    公开(公告)号：NO931335D0

    公开(公告)日：1993-04-07

    申请号：NO931335

    申请日：1993-04-07

    Applicant: HOECHST AG

    Inventor： PUSCH GUENTER ,  RANJBAR MOHAMMAD

    IPC: E21B33/13 ,  C09K8/508 ,  C09K8/575 ,  C09K8/88 ,  E21B33/138 ,  E21B43/02 ,  E21B43/25 ,  E21B43/32 ,  E21B

    Abstract: The present invention relates to a process for reducing or completely stopping water production (encroachment) from a deposit in at least a part of a well, which traverses a deposit, for the recovery of oil and/or hydrocarbon gas, wherein an aqueous solution of a copolymer is introduced, starting from the well, into the part of the deposit in which the water production is to be reduced or stopped, and the well is then put into operation for the recovery of oil and/or hydrocarbon gas, the fluids present in the deposit coming into contact with the said part of the deposit containing the adsorbed copolymer, and the oil and/or hydrocarbon gas flowing through this part of the deposit and passing into the well, while the passage through the deposit is reduced, which process is characterised in that the aqueous solution contains a copolymer based on acrylamidoalkylenesulphonate, vinylacetamide and, if appropriate, further monomers.

    3.
    发明专利
    未知

    公开(公告)号：NO303147B1

    公开(公告)日：1998-06-02

    申请号：NO931335

    申请日：1993-04-07

    Applicant: HOECHST AG

    Inventor： PUSCH GUENTER ,  RANJBAR MOHAMMAD

    IPC: E21B33/13 ,  C09K8/508 ,  C09K8/575 ,  C09K8/88 ,  E21B33/138 ,  E21B43/02 ,  E21B43/25 ,  E21B43/32 ,  E21B43/22

    Abstract: The present invention relates to a process for reducing or completely stopping water production (encroachment) from a deposit in at least a part of a well, which traverses a deposit, for the recovery of oil and/or hydrocarbon gas, wherein an aqueous solution of a copolymer is introduced, starting from the well, into the part of the deposit in which the water production is to be reduced or stopped, and the well is then put into operation for the recovery of oil and/or hydrocarbon gas, the fluids present in the deposit coming into contact with the said part of the deposit containing the adsorbed copolymer, and the oil and/or hydrocarbon gas flowing through this part of the deposit and passing into the well, while the passage through the deposit is reduced, which process is characterised in that the aqueous solution contains a copolymer based on acrylamidoalkylenesulphonate, vinylacetamide and, if appropriate, further monomers.

    5.
    发明专利
    未知

    公开(公告)号：NO892785L

    公开(公告)日：1990-01-08

    申请号：NO892785

    申请日：1989-07-05

    Applicant: HOECHST AG

    Inventor： MILLER DENNIS ,  SCHMIDT MANFRED ,  HALASZ SIGMAR-PETER VON ,  HOLST ARNO ,  PUSCH GUENTER ,  ROSENTHAL GERHARD

    IPC: C09K8/584 ,  C09K8/588 ,  C09K23/02 ,  C09K23/12 ,  C09K23/42 ,  B01F17/00 ,  E21B43/00

    Abstract: Aqueous surfactant compositions containing a surfactant mixture of a) 55 to 85% by weight of an alkanesulphonate, petroleumsulphonate, olefinsulphonate or alkylbenzenesulphonate having a mean molecular weight of 280-400 and b) 15 to 45% by weight of an ether sulphonate of the formula RO(AO)mA'SO3M where R is C6-C20-alkyl or a phenyl group which is substituted by one to three alkyl groups having a total of 6 to 20 carbon atoms, A is a C2H4 or C3H6 group or a mixture of the two groups, A' is -C2H4- or -C3H6-, m is a number of 3 to 25, and M is an alkali metal atom or ammonium. These surfactant mixtures are suitable for tertiary oil recovery in combination with specific salt-stable copolymers based on polyarylamide. They form stable solutions or dispersions with highly saline water.

    9.
    发明专利
    未知

    公开(公告)号：NO892785D0

    公开(公告)日：1989-07-05

    申请号：NO892785

    申请日：1989-07-05

    Applicant: HOECHST AG

    Inventor： MILLER DENNIS ,  SCHMIDT MANFRED ,  HALASZ SIGMAR-PETER VON ,  HOLST ARNO ,  PUSCH GUENTER ,  ROSENTHAL GERHARD

    IPC: C09K8/584 ,  C09K8/588 ,  C09K23/02 ,  C09K23/12 ,  C09K23/42 ,  B01F17/00 ,  E21B43/00

    Abstract: Aqueous surfactant compositions containing a surfactant mixture of a) 55 to 85% by weight of an alkanesulphonate, petroleumsulphonate, olefinsulphonate or alkylbenzenesulphonate having a mean molecular weight of 280-400 and b) 15 to 45% by weight of an ether sulphonate of the formula RO(AO)mA'SO3M where R is C6-C20-alkyl or a phenyl group which is substituted by one to three alkyl groups having a total of 6 to 20 carbon atoms, A is a C2H4 or C3H6 group or a mixture of the two groups, A' is -C2H4- or -C3H6-, m is a number of 3 to 25, and M is an alkali metal atom or ammonium. These surfactant mixtures are suitable for tertiary oil recovery in combination with specific salt-stable copolymers based on polyarylamide. They form stable solutions or dispersions with highly saline water.

    10.
    发明专利
    未知

    公开(公告)号：MX9302045A

    公开(公告)日：1994-07-29

    申请号：MX9302045

    申请日：1993-04-07

    Applicant: HOECHST AG

    Inventor： PUSCH GUENTER ,  RANJBAR MOHAMMAD

    IPC: E21B33/13 ,  C09K8/508 ,  C09K8/575 ,  C09K8/88 ,  E21B33/138 ,  E21B43/02 ,  E21B43/25 ,  E21B43/32 ,  E21B43/12

    Abstract: The present invention relates to a process for reducing or completely stopping water production (encroachment) from a deposit in at least a part of a well, which traverses a deposit, for the recovery of oil and/or hydrocarbon gas, wherein an aqueous solution of a copolymer is introduced, starting from the well, into the part of the deposit in which the water production is to be reduced or stopped, and the well is then put into operation for the recovery of oil and/or hydrocarbon gas, the fluids present in the deposit coming into contact with the said part of the deposit containing the adsorbed copolymer, and the oil and/or hydrocarbon gas flowing through this part of the deposit and passing into the well, while the passage through the deposit is reduced, which process is characterised in that the aqueous solution contains a copolymer based on acrylamidoalkylenesulphonate, vinylacetamide and, if appropriate, further monomers.

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