Polymer delivery in well treatment applications
    44.
    发明授权
    Polymer delivery in well treatment applications 有权
    聚合物输送在井处理应用中

    公开(公告)号:US09574128B2

    公开(公告)日:2017-02-21

    申请号:US12166804

    申请日:2008-07-02

    摘要: This invention relates to compositions and methods for treating subterranean formations, in particular, oilfield stimulation compositions and methods using water-in-water polymer emulsions to uniformly dissolve a rheologically active polymer, such as a thickener or friction reducer, in the treatment fluid. The emulsions have a low viscosity and are easily pumped for mixing into a treatment fluid, where upon dilution with an aqueous medium, the polymer is easily hydrated without forming fish-eyes. The partitioning agent in the water-in-water emulsion does not generally affect the rheology of the treatment fluid. The invention also relates to further processing of the emulsion by wet grinding, high shear mixing and/or heating to enhance the hydration rate in the preparation of the well treatment fluid.

    摘要翻译: 本发明涉及用于处理地下地层的组合物和方法,特别是油田刺激组合物和使用水包水聚合物乳液在处理液中均匀溶解流变学活性聚合物如增稠剂或摩擦减小剂的方法。 乳液具有低粘度并且容易地泵入以混合到处理流体中,其中当用水性介质稀释时,聚合物容易水合而不形成鱼眼。 水包油乳液中的分配剂通常不影响处理液的流变性。 本发明还涉及通过湿法研磨,高剪切混合和/或加热进一步处理乳液,以提高在井处理流体的制备中的水化速率。

    System And Method For Performing Treatments To Provide Multiple Fractures
    45.
    发明申请
    System And Method For Performing Treatments To Provide Multiple Fractures 审中-公开
    用于进行多次骨折治疗的系统和方法

    公开(公告)号:US20130118750A1

    公开(公告)日:2013-05-16

    申请号:US13296307

    申请日:2011-11-15

    IPC分类号: E21B43/26 G05D16/20 G05D7/06

    CPC分类号: E21B43/26 G05D16/2066

    摘要: A method includes initiating a first hydraulic fracture with a first fracture initiation fluid at a first position in a wellbore. The method further includes positioning a high-solids content fluid (HSCF) in the first hydraulic fracture. The method further includes initiating a second hydraulic fracture with a second fracture initiation fluid at a second position in the wellbore, where the second position is not hydraulically isolated from the first position. The method further includes positioning the HSCF in the second hydraulic fracture.

    摘要翻译: 一种方法包括在井眼中的第一位置处用第一裂缝起始流体引发第一水力裂缝。 该方法还包括在第一水力裂缝中定位高固体含量流体(HSCF)。 该方法还包括在井眼中的第二位置处引发具有第二断裂引发流体的第二水力裂缝,其中第二位置不与第一位置液压隔离。 该方法还包括将HSCF定位在第二水力裂缝中。

    CHITOSAN AS BIOCIDE IN OILFIELD FLUIDS
    46.
    发明申请
    CHITOSAN AS BIOCIDE IN OILFIELD FLUIDS 审中-公开
    柴油作为生物油在油田流体中

    公开(公告)号:US20120273207A1

    公开(公告)日:2012-11-01

    申请号:US13097550

    申请日:2011-04-29

    IPC分类号: E21B43/26 C09K8/62 C08B37/08

    CPC分类号: C09K8/68 C08L5/08 C09K8/905

    摘要: The current application discloses fluids and methods for treating a subterranean formation penetrated by a wellbore, such as hydraulic fracturing. In one aspect, there is provided an oilfield fluid comprising chitosan at an amount sufficient to inhibit the growth of bacterial in the oilfield fluid. In another aspect, there is provided a method of preserving an oilfield fluid containing adding chitosan at a concentration that is sufficient to inhibit the growth of bacteria in the oilfield fluid. In a further aspect, there is provided a method of treating a subterranean formation penetrated by a wellbore, comprising preparing a treatment fluid, adding chitosan at a concentration sufficient to inhibit the growth of bacteria in the treatment fluid, introducing the mixture to the subterranean formation, and treating the subterranean formation with the mixture.

    摘要翻译: 目前的应用公开了用于处理由井眼渗透的地层的流体和方法,例如水力压裂。 一方面,提供了含有足以抑制油田液体中的细菌生长的量的壳聚糖的油田液体。 在另一方面,提供了一种保存含有足以抑制油田液体中的细菌生长的浓度的壳聚糖的油田液体的方法。 在另一方面,提供了一种处理由井筒渗透的地层的方法,包括制备处理流体,以足以抑制处理流体中细菌生长的浓度添加壳聚糖,将混合物引入地层 ,并用混合物处理地下地层。

    HIGH SOLIDS CONTENT SLURRIES AND METHODS
    48.
    发明申请
    HIGH SOLIDS CONTENT SLURRIES AND METHODS 有权
    高固体内容物流和方法

    公开(公告)号:US20120138296A1

    公开(公告)日:2012-06-07

    申请号:US13372589

    申请日:2012-02-14

    IPC分类号: E21B43/267 C09K8/62

    摘要: A slurry and method are disclosed for low damage gravel packing. The slurry comprises a solids mixture comprising a plurality of volume-averaged particle size distribution (PSD) modes such that a packed volume fraction (PVF) exceeds 0.75; a carrier fluid in an amount to provide a solids volume fraction (SVF) less than the PVF of the solids mixture; and a stability additive to inhibit settling of the solids mixture. The method comprises circulating the slurry into a wellbore to deposit the slurry downhole; terminating the slurry circulation for a period of time, wherein the stability additive inhibits settling of the solids mixture; and thereafter circulating the deposited slurry in contact with a surface of a screen. Stability additives disclosed include colloidal particles, hydratable polymer particles, and particles having an aspect ratio above 6.

    摘要翻译: 公开了一种用于低损伤砾石包装的浆料和方法。 该浆液包含一种包含多个体积平均粒度分布(PSD)模式的固体混合物,使得填充体积分数(PVF)超过0.75; 载体流体,其量提供小于固体混合物的PVF的固体体积分数(SVF); 以及稳定添加剂以抑制固体混合物的沉降。 该方法包括将浆料循环到井眼中以将井下的泥浆沉积; 终止浆料循环一段时间,其中稳定性添加剂抑制固体混合物的沉降; 然后使沉积的浆料与筛网的表面接触。 所公开的稳定添加剂包括胶体颗粒,可水合的聚合物颗粒和长宽比高于6的颗粒。

    Stabilizing biphasic concentrates through the addition of small amounts of high molecular weight polyelectrolytes
    50.
    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。