ORGANIC SALTS FOR REDUCING STONE PERMEABILITIES

    公开(公告)号:ZA201201675B

    公开(公告)日:2016-02-24

    申请号:ZA201201675

    申请日:2012-03-07

    Applicant: BASF SE

    Abstract: The use of free, aromatic acids which contain at least two aromatic ring systems or at least two acid functions, and/or salts thereof, for influencing rock formations in the exploitation of underground mineral oil and/or natural gas deposits is described. The free acids are used in particular for influencing and especially controlling the flow of acid into rock formations in so-called acidizing methods. Suitable salts of said aromatic acids serve for reducing the rock permeability and in particular reducing the inflow of water into the well bore. In addition to this use, corresponding methods are also claimed.

    ORGANIC SALTS FOR REDUCING STONE PERMEABILITIES

    公开(公告)号:AU2010281809B2

    公开(公告)日:2014-10-02

    申请号:AU2010281809

    申请日:2010-06-14

    Applicant: BASF SE

    Abstract: The invention relates to the use of free aromatic acids comprising at least two aromatic ring systems, or at least two acid functionalities, and/or the salts thereof, for influencing stone formations when mining underground petroleum and/or natural gas deposits. The free acids are used in particular when influencing and primarily controlling the inflow of acid in stone formations in a so-called acidizing process. Suitable salts of the indicated aromatic acids serve for reducing the stone permeability and in particular for reducing water inflow. The invention further relates to corresponding methods in addition to said use.

    PROCESS FOR TERTIARY MINERAL OIL PRODUCTION

    公开(公告)号:CA2889516A1

    公开(公告)日:2014-05-22

    申请号:CA2889516

    申请日:2013-11-06

    Applicant: BASF SE

    Abstract: Process for tertiary mineral oil production in which an aqueous injection fluid comprising at least a water soluble polyacrylamide-(co)polymer dissolved in the aqueous fluid is injected into a mineral oil deposit and the aqueous injection fluid is prepared by mixing a liquid dispersion polymer composition comprising particles of polyacrylamide-(co)polymers dispersed in an organic, hydrophobic liquid with an aqueous fluid. Preferably, the process is carried out on an off-shore production site.

    Method for oil recovery using hydrophobically associating polymers

    公开(公告)号:AU2011333834A1

    公开(公告)日:2013-06-27

    申请号:AU2011333834

    申请日:2011-11-22

    Applicant: BASF SE

    Abstract: The invention relates to a method for oil recovery, according to which an aqueous formulation comprising at least one water-soluble, hydrophobically associating copolymer is forced through at least one injection well in an oil deposit and crude oil is extracted from the oil deposit through at least one production well, said deposit being at a temperature of between 35°C and 120°C, preferably between 40°C and 90°C. The water-soluble, hydrophobically associating copolymer comprises at least acryl amide or derivatives thereof, a monoethylenically unsaturated monomer having anionic groups and a monoethylencally unsaturated monomer that can cause the association of the copolymer.

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