AUTO-INVERTIBLE INVERSE POLYMER EMULSION

    公开(公告)号:US20210355258A1

    公开(公告)日:2021-11-18

    申请号:US17288962

    申请日:2019-11-04

    申请人: SPCM SA

    摘要: The invention relates to an inverse polymer emulsion having the particular feature of auto-inverting without any need for the use of an inverting agent and containing a polymer of at least one water-soluble monomer and at least one LCST macromonomer. The invention also relates to the use of the inverse emulsion in the fields of the oil and gas industry, water treatment, slurry treatment, paper manufacturing, construction, mining, cosmetics, textiles, detergents or agriculture.

    COMPOSITION FOR OIL AND GAS RECOVERY
    3.
    发明公开

    公开(公告)号:US20230357627A1

    公开(公告)日:2023-11-09

    申请号:US17754796

    申请日:2020-11-05

    申请人: SPCM SA

    发明人: Cédrick FAVERO

    IPC分类号: C09K8/68

    CPC分类号: C09K8/685

    摘要: The invention relates to a composition for preparing injection fluid in oil and gas recovery comprising an inverse emulsion of an associative water-soluble polymer A comprising at least one hydrophobic monomer or hydrophobic macromonomer, and solid particles of a water-soluble polymer B, said polymer B being preferably associative. The invention also relates to a method of treating a portion of subterranean formation comprising providing the composition, preparing an injection fluid with at least the composition, introducing the injection fluid into portion of the subterranean formation. The composition is particularly useful to prepare fracturing fluid in fracturing operations.

    METHOD FOR PREPARING STRUCTURED POLYMERS IN POWDER FORM BY THE GEL PROCESS

    公开(公告)号:US20220315712A1

    公开(公告)日:2022-10-06

    申请号:US17596075

    申请日:2020-05-07

    申请人: SPCM SA

    摘要: This invention relates to a method for preparing a structured water-soluble polymer having a weight average molecular weight greater than 1 million Daltons and a Huggins Coefficient KH greater than 0.4, the method comprising the following successive steps: a) Preparing a polymer, in the form of a gel, by free-radical polymerization in aqueous solution at an initiation temperature between −20° C. and +50° C. of at least one water-soluble monounsaturated ethylenic monomer, the total weight concentration of monomer(s) in relation to the polymerization charge being between 10 and 60%; b) Granulating the resulting polymer gel; c) Drying the polymer gel to obtain a polymer in powder form; d) Grinding and sifting the powder; at least 10% by weight of water-soluble polymer, based on the total weight of the water-soluble monounsaturated ethylenic monomer or monounsaturated ethylenic monomers used in step a), being added during the polymerization step a) and optionally during the granulation step b), the water-soluble polymer being structured and added as a water-in-oil inverse emulsion or dispersion in oil.