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    METHODS AND COMPOSITIONS FOR ENHANCED OIL RECOVERY
    3.
    发明申请
    METHODS AND COMPOSITIONS FOR ENHANCED OIL RECOVERY 审中-公开

    公开(公告)号：WO2020061063A1

    公开(公告)日：2020-03-26

    申请号：PCT/US2019/051536

    申请日：2019-09-17

    Applicant: KEMIRA OYJ ,  KEMIRA CHEMICALS, INC.

    Inventor： NURMI, Leena ,  HANSKI, Sirkku ,  TOIVONEN, Susanna ,  ROSATI, Louis

    IPC: C09K8/58 ,  C09K8/28 ,  C09K8/68

    Abstract: The present embodiments generally relate to methods and compositions comprising one or more polymers which gradually increase in charge, thereby providing for an increase in viscosity in an aqueous solution or aqueous composition, such as when present in a desired aqueous environment. Use of such compositions and methods comprising one or more polymers which gradually increase in charge, thereby providing for an increase in viscosity in an aqueous solution or aqueous composition during enhanced oil recovery may result in an increase in oil production relative to methods and/or compositions which do not comprise one or more polymers which gradually increase in charge, thereby providing for an increase in viscosity in an aqueous solution or aqueous composition.

    SYSTEMS AND METHODS FOR TREATING TAILINGS
    4.
    发明申请
    SYSTEMS AND METHODS FOR TREATING TAILINGS 审中-公开

    公开(公告)号：WO2020028824A1

    公开(公告)日：2020-02-06

    申请号：PCT/US2019/044937

    申请日：2019-08-02

    Applicant: KEMIRA OYJ ,  KEMIRA CHEMICALS, INC.

    Inventor： FENDERSON, Tom ,  PELAEZ, Miguel

    IPC: B03D1/02

    Abstract: Methods and apparatus or systems useful in the treatment of tailings are provided, e.g., oil sands tailings, and mature fine tailings. These methods and apparatus or system used therein comprise the combined use of electrocoagulation and chemical flocculation effected using one or more flocculants. The combined use of electrocoagulation and chemical flocculation in these methods and using these apparatus or system results in improvements such as improved removal of fine, slow settling clay particles, persistent contaminants, and/or residual bitumen; lower solids content, lower turbidity, and lower carbon oxygen demand ("COD").

    METHOD FOR TREATING PRODUCED WATER
    5.
    发明申请
    METHOD FOR TREATING PRODUCED WATER 审中-公开

    公开(公告)号：WO2020014714A3

    公开(公告)日：2020-01-16

    申请号：PCT/US2019/045317

    申请日：2019-08-06

    Applicant: KEMIRA OYJ ,  KEMIRA CHEMICALS, INC.

    Inventor： MIKKOLA, Esa ,  HONKANEN, Tapio ,  NUUTINEN, Vesa

    IPC: C02F1/58 ,  C02F1/70

    Abstract: The present embodiments generally relate to the treatment of produced water such as produced water resulting from an industrial process such as one involving the use of copious amounts of water and the addition of one or more polymers such as viscosifying or thickening polymers, in particular enhanced oil recovery processes or another processes resulting in polymer flooded produced water. These treatment methods include contacting the produced water with one or more reducing agents and one or more metals, wherein said treatment may result in a reduction of the viscosity of said produced water and/or the degradation of polymers which are contained therein.

    PAPER STRENGTH IMPROVING COMPOSITION, MANUFACTURE THEREOF AND USE IN PAPER MAKING
    6.
    发明申请
    PAPER STRENGTH IMPROVING COMPOSITION, MANUFACTURE THEREOF AND USE IN PAPER MAKING 审中-公开

    公开(公告)号：WO2019221692A1

    公开(公告)日：2019-11-21

    申请号：PCT/US2018/032504

    申请日：2018-05-14

    Applicant: KEMIRA OYJ ,  KEMIRA CHEMICALS INC.

    Inventor： LUO, Yuping ,  CHEN, Junhua ,  DANG, Zheng

    IPC: D21H21/20 ,  D21H17/37 ,  D21H17/28 ,  D21H17/41 ,  D21H17/52 ,  D21H17/55 ,  D21H19/24 ,  D21H19/54

    Abstract: Embodiments of the present invention relate to a method of making a paper comprising the steps of: a) providing a cationic wet strength resin comprising a polyamidoamine epihalohydrin, a condensation copolymer of epihalohydrin and amine, or combination thereof; b) providing an anionic polymer; c) co-mixing the cationic wet strength resin and the anionic polymer to provide a composition comprising polyelectrolyte complexes; d) providing an aqueous pulp slurry, draining the aqueous pulp slurry on a screen to form a wet fiber web, and drying the wet fiber web to obtain the paper, wherein said co-mixed composition is introduced to the aqueous pulp slurry or on the formed wet fiber web. Embodiments of the present invention further relates to a paper wet strength composition, its use in paper making and a paper obtainable therefrom.

    PREFORMED PARTICLE GEL FOR ENHANCED OIL RECOVERY
    7.
    发明申请
    PREFORMED PARTICLE GEL FOR ENHANCED OIL RECOVERY 审中-公开

    公开(公告)号：WO2019183390A1

    公开(公告)日：2019-09-26

    申请号：PCT/US2019/023425

    申请日：2019-03-21

    Applicant: KEMIRA OYJ ,  KEMIRA CHEMICALS, INC.

    Inventor： O'TOOLE, Michael

    IPC: B01J20/26 ,  B01J20/30 ,  C02F1/28

    Abstract: Re-crosslinkable interpenetrating polymer network preformed particle gels (IPN PPGs) and compositions containing re-crosslinkable IPN PPGs, are provided, as well as methods of re-crosslinking the re-crosslinkable IPN PPGs with ionic crosslinkers, and the resultant re-crosslinked IPN PPG compositions. In addition, the use of the re-crosslinkable and re-crosslinked IPN PPGs are provided, e.g., in methods, processes, and techniques related to enhanced oil recovery, e.g., conformance control, wherein the use of said re-crosslinked IPN PPGs may improve hydrocarbon recovery, e.g., by improving sweep efficiency. These re-crosslinked IPN PPGs are also useful in water and gas shutoff, fluid loss control, zone abandonment, water and gas coning, squeeze and recompletion, chemical liner completions and lost circulation during drilling operations and plugging during drilling and drilling completion.

    WATER SOLUBLE POLYMER DISPERSIONS
    8.
    发明申请
    WATER SOLUBLE POLYMER DISPERSIONS 审中-公开

    公开(公告)号：WO2018213684A1

    公开(公告)日：2018-11-22

    申请号：PCT/US2018/033355

    申请日：2018-05-18

    Applicant: KEMIRA OYJ ,  KEMIRA CHEMICALS INC.

    Inventor： O'TOOLE, Michael ,  NGUYEN, Danny

    IPC: C01F7/47 ,  C02F11/14 ,  C08J3/12

    Abstract: Polymer compositions comprising: one or more polyacrylamide powders, one or more dispersants, one or more alkali metal or ammonium salts, fumed silica and water. The polymer composition offer improved stability over comparable polymer composition without fumed silica and alkali metal or ammonium salts. Also disclosed are methods of preparing the polymer compositions, treatment fluids comprising the polymer compositions, and methods of treating a portion of a subterranean formation with the treatment fluids.

    A SOFTENER COMPOSITION
    9.
    发明申请
    A SOFTENER COMPOSITION 审中-公开
    软化剂组合物

    公开(公告)号：WO2017151084A1

    公开(公告)日：2017-09-08

    申请号：PCT/US2016/019999

    申请日：2016-02-29

    Applicant: KEMIRA, Oyj ,  KEMIRA CHEMICALS INC.

    Inventor： LU, Chen ,  CAMPBELL, Clay ,  RABIDEAU, Jenna Sue

    IPC: D21H27/00 ,  D21H17/37 ,  D21H17/65 ,  D21H21/10 ,  D21H21/18 ,  D21H21/20 ,  D21H21/22 ,  D21H21/24 ,  D21H23/04 ,  D21H23/22 ,  D21H23/24

    Abstract: The present invention relates to a softener composition for use in manufacture of a paper comprising a softener and an acidic material, wherein the softener composition has a relative acidity (RA) value of more than 0.05. The present invention further relates to a method for manufacturing a paper product, wherein the softener composition is applied. The present invention additionally relates to a paper product manufactured with the method.

    Abstract translation: 本发明涉及用于制造包含软化剂和酸性物质的纸的软化剂组合物，其中软化剂组合物具有大于0.05的相对酸度（RA）值。 本发明进一步涉及一种制造纸制品的方法，其中施用柔软剂组合物。 本发明还涉及用该方法制造的纸产品。

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