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    Gelled oil with surfactant
    4.
    发明授权
    Gelled oil with surfactant 失效
    凝胶油与表面活性剂

    公开(公告)号：US07521400B2

    公开(公告)日：2009-04-21

    申请号：US11064332

    申请日：2005-02-22

    Applicant: Mathew Samuel

    Inventor： Mathew Samuel

    IPC: C09J8/64 ,  E21B43/26 ,  B01F3/12

    CPC classification number: C09K8/32 ,  C09K8/64 ,  C09K8/82 ,  C09K2208/30

    Abstract: A viscoelastic gelled oil, for example gelled diesel or paraffin oil, is made with a gelling agent, for example a phosphate ester, a metal carboxylate, for example an aluminum carboxylate, and a gel-enhancing surfactant, for example a zwitterionic surfactant, for example erucylamidopropyl betaine. The gel-enhancing surfactant makes the gel viscoelastic, increases the stability and decreases the sensitivity to the concentrations of the gelling agent and the metal carboxylate. The enhanced viscoelastic gelled oils are used, as examples, in hydraulic fracturing, frac packing, gravel packing, diversion, fluid loss control, lost circulation control, sand control, wellbore cleanout, wellbore or pipeline sweeping, organic scale dissolution, organic scale removal, and drilling.

    Abstract translation: 粘胶凝胶油，例如胶凝的柴油或石蜡油，用胶凝剂，例如磷酸酯，金属羧酸盐，例如羧酸铝，以及凝胶增强表面活性剂（例如两性离子表面活性剂）制成，用于 例如芥子酰胺丙基甜菜碱。 凝胶增强表面活性剂使凝胶粘弹性增加，稳定性降低，对胶凝剂和金属羧酸盐的浓度敏感性降低。 使用增强的粘弹性凝胶油作为例子，在水力压裂，压裂填料，砾石填充，引水，失水控制，流失控制，防砂，井筒清理，井眼或管道清扫，有机垢溶解，有机垢去除， 和钻孔。

    Rheology modifiers
    6.
    发明授权
    Rheology modifiers 有权
    流变改性剂

    公开(公告)号：US07387987B2

    公开(公告)日：2008-06-17

    申请号：US11279612

    申请日：2006-04-13

    Applicant: Yiyan Chen ,  Jesse C. Lee ,  Mathew Samuel

    Inventor： Yiyan Chen ,  Jesse C. Lee ,  Mathew Samuel

    IPC: C09K8/584 ,  C09K8/588 ,  E21B21/00

    CPC classification number: C09K8/68 ,  C09K2208/30

    Abstract: A method for increasing the rate of shear rehealing of fluids made with cationic, zwitterionic, and amphoteric viscoelastic surfactant fluid systems by adding an effective amount of a polymeric rheology enhancer selected from polypropylene glycols and block copolymers of polypropylene glycol and polyethylene glycol. For applications in which rapid shear rehealing is required, the rheology enhancer allows fluids to be made and used at lower viscoelastic surfactant concentrations. Preferred surfactants are betaines and quaternary amines. The fluids are useful in oilfield treatments, for example fracturing and gravel packing.

    Abstract translation: 通过加入有效量的选自聚丙二醇和聚丙二醇和聚乙二醇的嵌段共聚物的聚合物流变增强剂，提高用阳离子，两性离子和两性粘弹性表面活性剂流体体系制备的流体的剪切再吸收速率的方法。 对于需要快速剪切回流的应用，流变增强剂允许在较低的粘弹性表面活性剂浓度下制备和使用流体。 优选的表面活性剂是甜菜碱和季胺。 这些流体可用于油田处理，例如压裂和砾石填充。

    Self-Cleaning Well Control Fluid
    7.
    发明申请
    Self-Cleaning Well Control Fluid 有权
    自清洁井控流体

    公开(公告)号：US20070238622A1

    公开(公告)日：2007-10-11

    申请号：US11278191

    申请日：2006-03-31

    Applicant: Diankui Fu ,  Steve Russell ,  Mathew Samuel

    Inventor： Diankui Fu ,  Steve Russell ,  Mathew Samuel

    IPC: C09K8/00 ,  E21B43/00

    CPC classification number: C09K8/74 ,  C09K2208/30

    Abstract: A composition and method is given for a well control fluid that is injected into a well during completion or remediation and prevents fluid flow from a formation into the well during operations (such as shut-in, or placement or adjustment of tools/hardware) when no fluid flow is desired. The composition includes a viscoelastic surfactant fluid system (VES) and a decomposable first solid material, preferably in fiber form, that forms a pack or plug in the well at the location where fluid would otherwise leak off, and then decomposes without intervention to release a product that is a breaker for the surfactant or the micelles of the VES. The composition optionally also contains a pH control agent and a second solid (that may also be a fluid loss agent) that affect the decomposition of the first solid.

    Abstract translation: 给出了一种组合物和方法，用于在完井或修复期间注入井中的井控流体，并且在操作期间（例如关闭，放置或调整工具/硬件），防止流体从地层流入井中 不需要流体流动。 组合物包括粘弹性表面活性剂流体系统（VES）和可分解的第一固体材料，优选纤维形式，其在流体否则会泄漏的位置处形成在井中的包装或塞子，然后在没有干预的情况下分解以释放 该产品是VES的表面活性剂或胶束的断裂剂。 该组合物任选地还含有影响第一固体分解的pH控制剂和第二固体（也可以是流体损失剂）。

    Prevention of Water and Condensate Blocks in Wells
    8.
    发明申请
    Prevention of Water and Condensate Blocks in Wells 审中-公开
    预防井中的水和冷凝块

    公开(公告)号：US20070029085A1

    公开(公告)日：2007-02-08

    申请号：US11460843

    申请日：2006-07-28

    Applicant: Mohan Panga ,  Mathew Samuel ,  Keng Chan ,  Philippe Enkababian ,  Pascal Cheneviere

    Inventor： Mohan Panga ,  Mathew Samuel ,  Keng Chan ,  Philippe Enkababian ,  Pascal Cheneviere

    IPC: E21B43/22 ,  E21B43/25

    CPC classification number: C09K8/035 ,  C09K8/584 ,  C09K8/588 ,  C09K8/602 ,  C09K8/88 ,  C09K2208/30 ,  E21B43/25

    Abstract: Compositions and methods are given to prevent, alleviate and remedy water blocks and gas blocks (condensate block or condensate banking). Wettability modifiers are contacted with the formation to change the surfaces from water wet or oil wet to intermediate wet or gas wet. Preferred wettability modifiers include partially or completely fluorinated surfactants or polymers, for example fluorosilanes such as perfluorosilanes, urethane oligomers containing perfluoro alkyl moieties, fluoroacrylates, and fluoroalkyl containing terpolymers or their mixtures. Other examples include surfactants, for example viscoelastic surfactants such as cationic surfactants such as quaternary amines, and zwitterionic surfactants, such as betaines, optionally mixed with co-surfactants.

    Abstract translation: 给出了组合和方法，以防止，减轻和补救水块和瓦斯块（冷凝物块或冷凝物）。 润湿性调节剂与地层接触，以将表面从湿润的或油的湿润变为中间的湿气或湿气。 优选的润湿性改性剂包括部分或完全氟化的表面活性剂或聚合物，例如氟硅烷如全氟硅烷，含全氟烷基部分的氨基甲酸酯低聚物，氟代丙烯酸酯和含氟烷基的三元共聚物或其混合物。 其它实例包括表面活性剂，例如粘弹性表面活性剂，例如阳离子表面活性剂如季胺，和两性离子表面活性剂，如甜菜碱，任选与辅助表面活性剂混合。

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