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    Sequenced polymers for monitoring the filtrate
    23.
    发明授权
    Sequenced polymers for monitoring the filtrate 有权

    公开(公告)号：US11427747B2

    公开(公告)日：2022-08-30

    申请号：US17021176

    申请日：2020-09-15

    Applicant: RHODIA OPERATIONS

    Inventor： Arnaud Cadix ,  David James Wilson

    IPC: C04B24/26 ,  C04B28/02 ,  C09K8/035 ,  C09K8/487 ,  C09K8/508 ,  C04B28/14 ,  C08F293/00 ,  C04B103/00 ,  C04B103/46

    Abstract: The present invention relates to the use of a sequenced polymer as an agent for monitoring the filtrate in a fluid injected under pressure into an oil rock, wherein the fluid comprises solid particles and/or is brought into contact with solid particles within the oil rock after being injected, the polymer comprising at least three blocks, including: at least one first block which is adsorbed, preferably irreversibly, onto at least some of the particles (p); a second block (B) having a composition other than that of the first and a mean molecular weight of more than 10,000 g/mol, and which is soluble in the fluid (F); and at least one third block of type (A) or type (B).

    Copolymer comprising units of type a deriving from carboxylic acid monomers and units of type b deriving from sulfonic acid monomers
    24.
    发明授权
    Copolymer comprising units of type a deriving from carboxylic acid monomers and units of type b deriving from sulfonic acid monomers 有权

    公开(公告)号：US11384315B2

    公开(公告)日：2022-07-12

    申请号：US15112799

    申请日：2015-01-20

    Applicant: RHODIA OPERATIONS

    Inventor： Céline Orizet ,  David James Wilson ,  Julie Clavier ,  Eric Van Gramberen

    IPC: C11D3/37 ,  C08F293/00 ,  C08F228/02 ,  C08F220/58

    Abstract: The present invention relates to a copolymer comprising units of type A deriving from carboxylic acid monomers and units of type B deriving from sulfonic acid monomers, said units of type A and B representing more than 80 mol % of the total moles of units in the copolymer, characterized in that it comprises at least: —one first block formed of at least 95 mol % of units of type A and having a degree of polymerization DP1 comprised between 5 and 150; and —one second block formed of at least 95 mol % of units of type A and B with a molar ratio of units of type A to units of type B greater or equal to 1, wherein said units of type A and units of type B are statistically distributed, said second block having a degree of polymerization DP2 such that DP2/DP1≥1. It also relates to new detergent compositions comprising such a copolymer, and to the use of this copolymer in a detergent composition, especially an ADW composition, to prevent, limit or eliminate the filming phenomena.

    SUSPENSION OF ASSOCIATIVE POLYMERS FOR THE TREATMENT OF UNDERGROUND FORMATIONS
    25.
    发明申请
    SUSPENSION OF ASSOCIATIVE POLYMERS FOR THE TREATMENT OF UNDERGROUND FORMATIONS 有权

    公开(公告)号：US20220169911A1

    公开(公告)日：2022-06-02

    申请号：US17436949

    申请日：2020-03-03

    Applicant: RHODIA OPERATIONS

    Inventor： Arnaud Cadix ,  David James Wilson

    IPC: C09K8/508 ,  C09K8/516

    Abstract: This invention relates to the field of techniques for treating subterranean formations with gels during an oil or gas exploration or production operation, i.e., during drilling, completion, or hydraulic fracking processes. The invention relates in particular to a system making it possible to limit or even inhibit the phenomena known as loss of fluids (wager and/or gas) in an underground formation, particularly in a zone where the temperature is high.
    More particularly, the invention relates to a suspension (S) comprising: an aqueous phase containing salts; and within said aqueous phase, particles (p) based on associative polymers (P).

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