5.
    发明专利
    未知

    公开(公告)号:DE59000096D1

    公开(公告)日:1992-05-27

    申请号:DE59000096

    申请日:1990-02-07

    Applicant: HOECHST AG

    Abstract: In the process described, the oil/gas-containing subterranean formations are contacted with a selected fluoro-surfactant as a stimulant. A particularly preferred stimulant consists essentially of the said fluoro-surfactants and of non-fluorinated, nonionic surfactants from the group of the alkoxypolyethylene glycol ethers and from the group of the alkylphenoxypolyethylene glycol ethers, the three components being present in a weight ratio of preferably about 1:1:1.

    6.
    发明专利
    未知

    公开(公告)号:DE3904092A1

    公开(公告)日:1990-08-16

    申请号:DE3904092

    申请日:1989-02-11

    Applicant: HOECHST AG

    Abstract: In the process described, the oil/gas-containing subterranean formations are contacted with a selected fluoro-surfactant as a stimulant. A particularly preferred stimulant consists essentially of the said fluoro-surfactants and of non-fluorinated, nonionic surfactants from the group of the alkoxypolyethylene glycol ethers and from the group of the alkylphenoxypolyethylene glycol ethers, the three components being present in a weight ratio of preferably about 1:1:1.

Patent Agency Ranking