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    Preparation of polymer particles
    8.
    发明申请
    Preparation of polymer particles 审中-公开
    聚合物颗粒的制备

    公开(公告)号：US20100006795A1

    公开(公告)日：2010-01-14

    申请号：US12584905

    申请日：2009-09-15

    申请人： Vidar Skagestad ,  Lars Kilaas

    发明人： Vidar Skagestad ,  Lars Kilaas

    IPC分类号： H01F1/26

    CPC分类号： B01J20/28009 ,  B01J20/26 ,  B01J20/30 ,  C08F2/32 ,  C08F2/44 ,  Y10T428/254

    摘要： A process for the preparation of polymer magnetic particles, which comprises: (a) providing a water phase containing magnetic components homogeneously dispersed therein; (b) wherein the water phase is contacted with or further contains a polymerisable metal-containing or organic monomer which is soluble in the water phase; and (c) polymerizing the monomer in the presence of the magnetic in which the magnetic components are substantially uniformly distributed; wherein at least a part of the polymerizing step (c) is carried out in a water-in-oil emulsion in which the water phase containing the magnetic components homogeneously dispersed therein is present as a discontinuous phase in a continuous oil phase.

    摘要翻译： 一种制备聚合物磁性颗粒的方法，其包括：（a）提供含有均匀分散在其中的磁性组分的水相; （b）其中水相与可溶于水相的可聚合的含金属或有机单体接触或进一步含有; 和（c）在磁性组分基本均匀分布的磁性存在下使单体聚合; 其中聚合步骤（c）的至少一部分在油包水乳液中进行，其中含有均匀分散在其中的磁性组分的水相以连续油相中的不连续相存在。

    Method and chemical agent for reduction of water production from oil and gas containing wells
    10.
    发明授权
    Method and chemical agent for reduction of water production from oil and gas containing wells 失效
    含油气井降水产生的方法和化学试剂

    公开(公告)号：US08765647B2

    公开(公告)日：2014-07-01

    申请号：US12297982

    申请日：2007-04-26

    申请人： Lars Kilaas ,  Einar Dahl-Jörgensen

    发明人： Lars Kilaas ,  Einar Dahl-Jörgensen

    IPC分类号： C09K8/60 ,  C09K8/68 ,  C09K8/528 ,  C09K8/588 ,  E21B43/16

    CPC分类号： C09K8/565 ,  C09K8/502

    摘要： Method and agent for reducing water production from oil and gas wells. The agent comprises polymer, cross-linked particles which are stable in water-free solvents. The particles are manufactured in an oil-in-oil emulsion and are cross-linked with at least one water-stable cross-linker and at least one water-labile cross-linker. The water-labile cross-linker is chosen so that when it is opened or broken in a reaction with water a hydrophilic seat is formed which increases the particle's ability to swell in water. The particles furthermore comprise a controlled amount of an immobilized chemical compound which by means of the reaction between water and reactive groups in the polymer skeleton, become able to form chemical bonds to another particle, to another reactive seat in the same particle or to another compounds thereby increasing the agent's stability in the formation.

    摘要翻译： 降低油气井产水量的方法和试剂。 该试剂包括在无水溶剂中稳定的聚合物交联颗粒。 颗粒以油包水乳液制成，并与至少一种水稳定交联剂和至少一种不稳定的交联剂交联。 选择水不稳定的交联剂，使得当它与水的反应打开或断开时，形成亲水性座位，这增加了颗粒在水中溶胀的能力。 颗粒还包括受控量的固定化学化合物，其通过水和聚合物骨架中的反应性基团之间的反应变得能够与另一颗粒形成化学键，与另一种颗粒中的另一反应性基团或另一种化合物 从而增加了物体在地层中的稳定性。