Stabilizing biphasic concentrates through the addition of small amounts of high molecular weight polyelectrolytes
    32.
    发明授权
    Stabilizing biphasic concentrates through the addition of small amounts of high molecular weight polyelectrolytes 有权
    通过加入少量高分子量聚电解质稳定两相浓缩物

    公开(公告)号:US08043999B2

    公开(公告)日:2011-10-25

    申请号:US12353768

    申请日:2009-01-14

    IPC分类号: C09K8/588 C09K8/68

    摘要: This invention relates to compositions and methods of treating a subterranean formation penetrated by a well bore including providing a treatment composition comprising a rheological polymer, a partitioning agent, a charged polyelectrolyte, and a first liquid medium, forming a stabilized heterogeneous mixture comprising a dispersed rheological polymer-rich phase and a partitioning agent-rich phase, and injecting the treatment fluid into the well bore. The invention relates to methods and compositions for preparing a well treatment fluid, including mixing polyethylene glycol partitioning agent, a charged polyelectrolyte, a first aqueous medium, and one or more rheological polymers selected from the group consisting of guar, modified guar, cellulose, modified cellulose, heteropolysaccharide, heteropolysaccharide derivative, or polyacrylamide, to hydrate the one or more polymers and form a water-in-water emulsion, and mixing the water-in-water emulsion with a second aqueous medium to form a well treatment fluid.

    摘要翻译: 本发明涉及处理由井眼渗透的地层的组合物和方法,包括提供包含流变聚合物,分配剂,带电聚电解质和第一液体介质的处理组合物,形成稳定的非均匀混合物,其包含分散的流变学 富聚合物相和富分配剂相,并将处理流体注入井眼。 本发明涉及用于制备井处理流体的方法和组合物,包括混合聚乙二醇分配剂,带电聚电解质,第一含水介质和一种或多种流变聚合物,其选自瓜尔胶,改性瓜尔胶,纤维素,改性 纤维素,杂多糖,杂多糖衍生物或聚丙烯酰胺,以水合一种或多种聚合物并形成水包油乳液,并将水包油乳液与第二水性介质混合以形成良好的处理流体。

    BREAKING THE RHEOLOGY OF A WELLBORE FLUID BY CREATING PHASE SEPARATION
    33.
    发明申请
    BREAKING THE RHEOLOGY OF A WELLBORE FLUID BY CREATING PHASE SEPARATION 审中-公开
    通过创建相分离破坏井筒流体的流变学

    公开(公告)号:US20100184630A1

    公开(公告)日:2010-07-22

    申请号:US12354931

    申请日:2009-01-16

    IPC分类号: C09K8/60 C09K8/588

    摘要: Embodiments of this invention relate to compositions and methods of treating a subterranean formation penetrated by a well bore including introducing a Theological polymer into a subterranean formation, introducing a partitioning agent into a subterranean formation and forming a heterogeneous mixture comprising a dispersed Theological polymer-rich phase and a partitioning agent-rich phase, wherein the viscosity of the mixture is lower than the viscosity of the mixture when no partitioning agent is present. Embodiments of this invention relate to compositions and methods of treating a surface in contact with a wellbore and/or a subterranean formation penetrated by a well bore including forming a heterogeneous mixture comprising a dispersed Theological polymer-rich phase and a partitioning agent-rich phase at the surface of the subterranean formation, and introducing the mixture into a subterranean formation, wherein the viscosity of the mixture within the subterranean formation is lower than the viscosity of the mixture when no partitioning agent is present and wherein the viscosity of the mixture within the subterranean formation is lower than the viscosity of the mixture when the mixture is formed at the surface of the subterranean formation.

    摘要翻译: 本发明的实施方案涉及处理由井眼渗透的地下地层的组合物和方法,包括将神学聚合物引入地下地层,将分配剂引入地下地层并形成包含分散的神经聚合物丰富相的不均匀混合物 和分配剂富集相,其中当不存在分配剂时,混合物的粘度低于混合物的粘度。 本发明的实施方案涉及处理与井眼和/或穿透井眼的地层接触的表面的组合物和方法,包括形成包含分散的神经聚合物丰富相和富分配剂相的不均匀混合物 地下地层的表面,并将混合物引入地下地层,其中当没有分配剂时,地层内的混合物的粘度低于混合物的粘度,并且其中地下混合物的粘度 当在地层表面形成混合物时,其形成比混合物的粘度低。

    Polymeric Microspheres As Degradable Fluid Loss Additives In Oilfield Applications
    35.
    发明申请
    Polymeric Microspheres As Degradable Fluid Loss Additives In Oilfield Applications 失效
    聚合物微球作为油田应用中可降解的流体损失添加剂

    公开(公告)号:US20090205824A1

    公开(公告)日:2009-08-20

    申请号:US12353810

    申请日:2009-01-14

    摘要: Methods and apparatus for forming a fluid for use within in a subterranean formation including crosslinking a polymer along the surface of microspheres in a water-in-water emulsion and introducing the microspheres into the subterranean formation. Methods and apparatus for forming a fluid for use within in a subterranean formation including crosslinking a polymer along the surface of microspheres in a water in water emulsion, isolating the microspheres from the emulsion, and introducing the microspheres into the subterranean formation. Methods and apparatus for forming a fluid to treat a subterranean formation including introducing a crosslinkable polymer, partitioning agent, and crosslinker into a solvent, crosslinking the crosslinkable polymer, isolating beads of the crosslinkable polymer from the partitioning agent, introducing the beads into a fluid for treating a subterranean formation.

    摘要翻译: 用于形成在地下地层内使用的流体的方法和装置,包括在水包油乳液中沿着微球表面交联聚合物,并将微球引入地下地层。 用于形成在地层内使用的流体的方法和装置,包括在水包油乳液中沿着微球表面交联聚合物,从微乳液中分离出微球体,并将微球引入到地层中。 用于形成处理地下地层的流体的方法和装置,包括将可交联聚合物,分配剂和交联剂引入溶剂中,交联可交联聚合物,将可交联聚合物的珠子与分配剂隔离,将珠子引入流体中 处理地层。

    PROVISION OF VISCOUS COMPOSITIONS BELOW GROUND
    40.
    发明申请
    PROVISION OF VISCOUS COMPOSITIONS BELOW GROUND 审中-公开
    接近地面粘度组合物的施工

    公开(公告)号:US20100184631A1

    公开(公告)日:2010-07-22

    申请号:US12355061

    申请日:2009-01-16

    IPC分类号: C09K8/584

    摘要: A method of providing a viscous emulsion at a subterranean location accessible via a wellbore, begins by providing an aqueous/aqueous emulsion comprising two aqueous solutions which, at surface temperature and pressure, are able to co-exist as separate aqueous phases in contact with each other. The two phases contain respective solutes which are sufficiently incompatible that they cause phase separation. The dispersed phase is rich in one solute, which may be a thickening polymer, while continuous phase is rich in a second solute, which may comprise surfactant. A hydrophobic liquid is dispersed in this emulsion to become the dispersed phase of a viscous emulsion whose continuous phase is provided by the aqueous/aqueous emulsion. The hydrophobic liquid and the aqueous/aqueous emulsion may be pumped separately down the wellbore to the subterranean location, and allowed to mix there so as to form the viscous emulsion at the subterranean location. On mixing, surfactant from the aqueous/aqueous emulsion may migrate to the oil/water interface, allowing the aqueous phases to become one phase with the result that the emulsion is further thickened by any thickening polymer in its composition. Even more thickening can be achieved by crosslinking the thickening polymer.

    摘要翻译: 在通过井孔可接近的地下位置提供粘性乳液的方法开始于提供包含两种水溶液的水性/水性乳液,所述两种水溶液在表面温度和压力下能够作为与每个相接触的分开的水相共存 其他。 这两个相含有各自的溶质,它们是相互不相容的,它们引起相分离。 分散相富含一种溶质,其可以是增稠聚合物,而连续相富含第二溶质,其可以包含表面活性剂。 疏水性液体分散在该乳液中,成为其连续相由水/乳液提供的粘性乳液的分散相。 疏水性液体和水性/水性乳液可以沿着井筒分开泵送到地下位置,并允许在那里混合,以便在地下位置形成粘性乳液。 在混合时,来自水/乳液的表面活性剂可以迁移到油/水界面,使水相变成一相,结果乳液在其组成中被任何增稠聚合物进一步增稠。 通过交联增稠聚合物可以获得更多的增稠。