COATED PROPPANT AND METHODS OF MAKING AND USE THEREOF

    公开(公告)号:WO2021055202A1

    公开(公告)日:2021-03-25

    申请号:PCT/US2020/049910

    申请日:2020-09-09

    IPC分类号: C09K8/62 C09K8/80

    摘要: Methods for producing proppants with a fluorinated polyurethane proppant coating are provided. The methods include coating the proppant particles with a strengthening agent, a strengthening agent, and a resin to produce proppants with fluorinated polyurethane proppant coating. Additionally, a proppant comprising a proppant particle and a fluorinated polyurethane proppant coating is provided. The fluorinated polyurethane proppant coating includes a strengthening agent, a strengthening agent, and a resin. The fluorinated polyurethane proppant coating coats the proppant particle. Additionally, a method for increasing a rate of hydrocarbon production from a subsurface formation through the use of the proppants is provided.

    COATED PROPPANTS
    7.
    发明申请
    COATED PROPPANTS 审中-公开

    公开(公告)号:WO2021021242A1

    公开(公告)日:2021-02-04

    申请号:PCT/US2020/014508

    申请日:2020-01-22

    发明人: AGARWAL, Praveen

    IPC分类号: C09K8/80

    摘要: Coated proppant particles are prepared by coating the particles with a coating composition that includes at least one polyisocyanate and at least one ingredient selected from i) an isocyanate trimerization catalyst, ii) a carbodiimide catalyst, iii) an alcohol, iv) a polyamine and v) an alkanolamine, and curing the coating composition. Starch is present during at least part of the curing step, such that the starch becomes embedded in at least a portion of the cured coating. The coating composition cures rapidly at moderate temperatures, and bonds to itself well under conditions of heat and pressure as are experienced by the particles in subterranean formations.

    NANOCOMPOSITE COATED PROPPANTS AND METHODS OF MAKING SAME

    公开(公告)号:WO2020214566A1

    公开(公告)日:2020-10-22

    申请号:PCT/US2020/028077

    申请日:2020-04-14

    IPC分类号: C09K8/80 C01B32/162

    摘要: The present disclosure relates to methods of making nanocomposite coated proppants with a nanocomposite coating, including adding a quantity of precursor nanoparticles comprising carbon nanotubes supported by metal oxide catalyst nanoparticles to an uncured resin. The metal oxide catalyst nanoparticles and the uncured resin are selected such that the metal oxide catalyst nanoparticles are dissolvable in the uncured resin. The metal oxide catalyst nanoparticles are capable of dissolving in the uncured resin such that an amount of carbon nanotubes are dispersed within the uncured resin to form a nanocomposite coating. The method may further include coating proppant particles with the nanocomposite coating to make nanocomposite coated proppants.

    SYSTEMS AND METHODS FOR ASSESSING SUSPENDED PARTICLE SETTLING

    公开(公告)号:WO2020132445A1

    公开(公告)日:2020-06-25

    申请号:PCT/US2019/067857

    申请日:2019-12-20

    IPC分类号: C09K8/56 C09K8/80 E21B43/26

    摘要: A method for determining a rate at which solid particles settle from a liquid in a slurry includes (a) mixing the solid particles and the liquid to form the slurry. In addition, the method includes (b) placing the slurry in an inner cavity of a vessel. Further, the method includes (c) measuring a hydrostatic pressure of the slurry at a bottom of the inner cavity over a period of time after (b). The method also includes (d) determining a quantity of the solid particles that settle from the liquid as a function of time over the period of time using the hydrostatic pressure measurements from (c).