中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

58 records (took 0.04 seconds)

    ORGANIC SALTS FOR REDUCING STONE PERMEABILITIES
    25.
    发明专利
    ORGANIC SALTS FOR REDUCING STONE PERMEABILITIES 未知

    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

    Inventor： BRODT GREGOR ,  SCHLEIFER NORBERT ,  SPINDLER CHRISTIAN

    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
    26.
    发明专利
    ORGANIC SALTS FOR REDUCING STONE PERMEABILITIES 未知

    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

    Inventor： SPINDLER CHRISTIAN ,  SCHLEIFER NORBERT ,  BRODT GREGOR

    IPC: C09K8/506 ,  C09K8/60 ,  C09K8/74

    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.

    Concentration of suspensions
    27.
    发明专利
    Concentration of suspensions 未知

    公开(公告)号：AU2011236476B2

    公开(公告)日：2013-09-05

    申请号：AU2011236476

    申请日：2011-04-08

    Applicant: BASF SE

    Inventor： STOCKS PAUL ,  FLANAGAN IAN JOHN ,  BRODT GREGOR ,  ADKINS STEPHEN

    IPC: B01D21/01

    Abstract: A process of forming a second aqueous suspension of solid particles (15) by gravity sedimentation of a first aqueous suspension of solid particles (14) in a vessel (13), comprising the steps of, adding at least one organic polymeric flocculant (12) to the first aqueous suspension of solid particles (14) thereby forming a suspension of flocculated solids (1 1 ), which flocculated solids settle to form a bed of consolidated solids (5), introduction of an effective amount of an agent, into the i) bed of consolidated solids (5) or ii) the flocculated solids that are settling (1 1 ), in order to form the second aqueous suspension (15), in which the second aqueous suspension of solid particles (15) is of higher solids content than the first aqueous suspension of solid particles (14), and in which the agent is selected from the group consisting of free radical agents and oxidising agents, wherein the agent is introduced means selected from the group consisting of A) one or more rakes (10) which convey the agent; B) one or more conduits (16) entering through the top of the vessel through which the agent is introduced C) one or more apertures or conduits (17) in the side walls of the vessel through which the agent is introduced; D) one or more apertures or conduits (18) in the base of the vessel through which the agent is introduced; E) introducing the agent through one or more apertures or conduits (19) in the feed line conveying the bed of consolidated solids from the base of the vessel, preferably between the base of the vessel and a pump; and F) one or more sparges (20) through which the agent is introduced.

    29.
    发明专利
    未知

    公开(公告)号：DE50311809D1

    公开(公告)日：2009-09-24

    申请号：DE50311809

    申请日：2003-06-04

    Applicant: BASF SE

    Inventor： BAUM PIA ,  MICHL KATHRIN ,  WEINGART FRANZ ,  NIED STEPHAN ,  BRODT GREGOR

    IPC: C11D3/37 ,  C08F290/06

    Abstract: Sulfonic acid group copolymer composition comprises (a) 30-95 mole% of at least one monoethylenically unsaturated carboxylic acid, (b) 3-35 mole% of at least one sulfonic acid group containing monomers, and (c) 1-35 mole% of nonionic monomer obtained by statistical or block polymerization. Sulfonic acid group copolymer composition comprises: (1) 30-95 mole% of at least one monoethylenically unsaturated carboxylic acid; (2) 3-35 mole% of at least one sulfonic acid group containing monomer of formula (I); and (3) 1-35 mole% of nonionic monomer of formula (II). R = H or Me; R1 = branched 1-4C alkyl; X = chemical bond or -COO-R1; and M = H, alkali metal, or ammonium. R2 = H or Me; R3 = chemical bond or optionally branched 1-6C alkylene; R4 = optionally branched 2-4C alkylene; R5 = optionally branched 1-6C alkyl, 5-8C cycloalkyl, or aryl; n = 3-50. The polymer is obtained by statistical or block polymerization.

Patent Agency Ranking