中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

34 records (took 0.022 seconds)

    Method for blocking subterranean formations
    22.
    发明专利
    Method for blocking subterranean formations 未知

    公开(公告)号：AU2009328509B2

    公开(公告)日：2015-01-22

    申请号：AU2009328509

    申请日：2009-11-07

    Applicant: BASF SE

    Inventor： REICHENBACH-KLINKE ROLAND ,  GUZMANN MARCUS ,  PFEUFFER THOMAS ,  HERTH GREGOR ,  FRIEDRICH STEFAN

    IPC: C09K8/508 ,  C09K8/512 ,  C09K8/516

    Abstract: A method for blocking subterranean formations in the extraction of fossil oil and/or gas is proposed, wherein water-absorbent particles are introduced into porous and fluid-conducting rock formations in a first step, said particles being water-swellable, crosslinked and water-insoluble polymers, and wherein the particles in the water-conducting rock formation ultimately suppress the fluid flow through the rock layers by absorption of water. Said method is characterized in that the absorbent particles are a superabsorbent polymer having anionic and/or cationic properties and a time-delayed swelling effect. Said method, which can also be performed in saline formation water, has the characteristic that the swelling of the superabsorbers used begins after five minutes at the earliest, and the superabsorbers are accessible through four proposed process variants and any combinations thereof. Said method, which does not require a carrier fluid, has the characteristics of simplicity and in particular the controllable delay in the swelling effect under the specific conditions of subterranean rock formations.

    WATER SOLUBLE,HYDROPHOBIC ASSOCIATING COPOLYMER
    23.
    发明专利
    WATER SOLUBLE,HYDROPHOBIC ASSOCIATING COPOLYMER 未知

    公开(公告)号：ZA201201587B

    公开(公告)日：2014-05-28

    申请号：ZA201201587

    申请日：2012-03-02

    Applicant: BASF SE

    Inventor： PFEUFFER THOMAS ,  REICHENBACH-KLINKE ROLAND ,  FRIEDRICH STEFAN ,  GUZMANN MARCUS

    IPC: C08F20060101

    Abstract: Water-soluble, hydrophobically associated copolymer (I) comprising (a) at least one monoethylenically unsaturated, water-soluble surface active monomer, and (b) at least one monoethylenically unsaturated hydrophilic monomer (b) different from the monomer (a), is claimed, where during the preparation of (I), additionally (c) a non-polymerizable surfactant is used before the initiation of the polymerization reaction. An independent claim is included for a process for preparing (I) comprising subjecting (a) and (b) to an aqueous solution polymerization in the presence of (c).

    HYDROPHOBICALLY ASSOCIATING COPOLYMERS
    25.
    发明专利
    HYDROPHOBICALLY ASSOCIATING COPOLYMERS 未知

    公开(公告)号：ZA201109260B

    公开(公告)日：2013-02-27

    申请号：ZA201109260

    申请日：2011-12-15

    Applicant: BASF SE

    Inventor： REICHENBACH-KLINKE RONALD ,  PFEUFFER THOMAS ,  SCHMIDT KATI ,  OSTROWSKI THOMAS ,  LEYRER REINHOLD J ,  FOGEL YULIA ,  FRIEDRICH STEFAN ,  GAEBERLEIN PETER ,  ORLEANS ANDREA ,  SCHUHBECK MANFRED ,  GUZMANN MARCUS ,  ROSCH MARKUS ,  LANGLOTZ BJORN

    IPC: C08F20060101

    Abstract: Water-soluble hydrophobically, associating copolymer comprises (in wt.%): (a) monoethylenically unsaturated hydrophobically associated monomers (0.1-20); and (b) at least one of them different, monoethylenically unsaturated hydrophilic monomers (25-99.9), based on the total amount of all monomers in the copolymer, where at least one of the monomer is a hydrocarbon (I). Water-soluble hydrophobically, associating copolymer comprises (in wt.%): (a) monoethylenically unsaturated hydrophobically associated monomers (0.1-20); and (b) at least one of them different, monoethylenically unsaturated hydrophilic monomer (25-99.9), based on the total amount of all monomers in the copolymer, where at least one of the monomer is a hydrocarbon of formula (H 2C=C(R 1>)-R 4>-O-(-CH 2-CH(R 2>)-O-) k-(-CH 2-CH(R 3>)-O-) i-R 5>) (I). The units -(-CH 2-CH(R 2>)-O-) kand (-CH 2-CH (R 3>)-O-) lare arranged in the block structure in hydrocarbon (I). k : 10-150; l : 5-25; R 1> : H or CH 3; R 2> : H, CH 3or C 2H 5; R 3> : 2C or ether of formula (-CH 2-OR 9); R 9> : 2C; R 4> : single bond or divalent linkage comprising -(C nH 2 n)-[R 4> 1>], -O-(C nH 2 n)-[R 4> 2>] or -C(O)-O-(C nH 2 n-)-[R 4> 3>]; R 4> 1> : -CH 2- (preferred), -CH 2-CH 2-, -CH 2-CH 2-CH 2-; R 4> 2> : -O-CH 2-CH 2-, -O-CH 2-CH 2-CH 2- or preferably -O-CH 2-CH 2-CH 2-CH 2-; R 4> 3> : -C(O)-O-CH 2-CH 2- (preferred), -C(O)O-CH(CH 3)-CH 2-, -C(O)O-CH 2-CH(CH 3)-, -C(O)O-CH 2-CH 2-CH 2-CH 2- or -C(O)O-CH 2-CH 2-CH 2-CH 2-CH 2-CH 2-; n : 1-6; and R 5> : H or 1-30C hydrocarbon. Provided that 50% of R 2>is H.

Patent Agency Ranking