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    Method of treating a formation
    1.
    发明授权
    Method of treating a formation 有权
    处理地层的方法

    公开(公告)号：US08640774B1

    公开(公告)日：2014-02-04

    申请号：US12032859

    申请日：2008-02-18

    申请人： Kevin W Frederick ,  Shih-Ruey T Chen

    发明人： Kevin W Frederick ,  Shih-Ruey T Chen

    IPC分类号： E21B43/16

    CPC分类号： C09K8/70 ,  C09K8/36 ,  C09K8/62 ,  E21B43/26

    摘要： A method of treating a portion of a subterranean formation that includes: providing a water-in-oil emulsion, inverting the water-in-oil emulsion to form a friction reducing treatment solution, and introducing the treatment solution into the portion of the subterranean formation. The water-in-oil emulsion has an oil phase, an aqueous phase and surfactants. The oil phase (O) and an aqueous phase (A) are present at an O/A ratio of from about 1:8 to about 10:1. The oil phase is present as a continuous phase and contains an inert hydrophobic liquid. The aqueous phase is present as a dispersed phase of distinct particles in the oil phase and includes water and a water soluble polymer. The water soluble polymer makes up from 10 to 25 weight percent of the water-in-oil emulsion. The water-in-oil emulsion is inverted by adding it to water to form a friction reducing treatment solution.

    摘要翻译： 一种处理地下地层的一部分的方法，其包括：提供油包水乳液，使油包水乳液翻转以形成减摩处理溶液，并将处理溶液引入到地层中 。 油包水乳液具有油相，水相和表面活性剂。 油相（O）和水相（A）以约1:8至约10:1的O / A比存在。 油相以连续相存在并含有惰性疏水液体。 水相以油相中不同颗粒的分散相存在，包括水和水溶性聚合物。 水溶性聚合物占油包水乳液的10-25％（重量）。 油包水乳液通过将其加入到水中而形成减摩处理溶液。

    Process for preparing novel high solids non-aqueous polymer compositions
    6.
    发明授权
    Process for preparing novel high solids non-aqueous polymer compositions 失效

    公开(公告)号：US5589525A

    公开(公告)日：1996-12-31

    申请号：US315371

    申请日：1994-09-30

    申请人： Wood E. Hunter ,  Kevin W. Frederick ,  Randy J. Loeffler

    发明人： Wood E. Hunter ,  Kevin W. Frederick ,  Randy J. Loeffler

    IPC分类号： C08J3/00 ,  B01D1/22 ,  C08F6/00 ,  C08J3/09 ,  C08L33/04

    CPC分类号： B01D1/22 ,  C08F6/008 ,  C08J3/09

    摘要： The use of falling-film evaporation and a concentration means such as centrifugal separation to dehydrate and concentrate a water-in-oil polymer emulsion or suspension is disclosed. In a preferred embodiment, a water-in-oil polymer composition containing less than about 25% active polymer solids is dehydrated in falling-film evaporator to produce an evaporator concentrate containing less than about 5.0% water. The evaporator concentrate then flows to a separation device such as a centrifuge, wherein oil is removed to produce a composition that is substantially a polymer and emulsifying surfactant-in-oil composition containing in excess of about 60 weight % polymer solids. The centrifuge raffinate may optionally be treated in a second separation means to capture additional polymer solids, with optional recycle of the oil-rich raffinate. The concentrated polymer composition is preferably stabilized with a steric stabilizer to produce a free flowing liquid product.

    Water soluble polymer complexes with surfactants
    7.
    发明授权
    Water soluble polymer complexes with surfactants 有权
    水溶性聚合物与表面活性剂的配合物

    公开(公告)号：US08211414B2

    公开(公告)日：2012-07-03

    申请号：US11108352

    申请日：2005-04-18

    申请人： Shih-Ruey T Chen ,  Kevin W. Frederick

    发明人： Shih-Ruey T Chen ,  Kevin W. Frederick

    IPC分类号： A61K8/81

    CPC分类号： A61Q19/00 ,  A61K8/8158 ,  A61K8/8176 ,  A61Q5/02 ,  A61Q5/12

    摘要： A complex including a polymer and a surfactant formed by polymerizing a monomer mixture containing: (A) acid functional monomers at least partially neutralized with one or more amines according to one or more of formulas (I) through (IV): R1—NR2R3  (I) R1—N+R2R3R7X−  (II) R4—C(O)—NR5—R6—NR2R3  (III) R4—C(O)—NR5—R6—N+R2R3R7X−  (IV) wherein R1 and R4 are independently a C8-C24 group; R2, R3 and R5 are independently H or a C1-C6 group, or where R2 and R3 combine to form an anelled ring of from 4 to 12 carbon atoms in length optionally containing hetero atoms; R6 is C1-C24 group, R7 is H or a C1-C12 group, and X is a halide, a sulfate or a sulfonate; (B) one or more cationic monomers; and optionally (C) one or more other monomers.

    摘要翻译： 包含通过聚合单体混合物形成的聚合物和表面活性剂的复合物，所述单体混合物包含：（A）根据一种或多种式（I）至（IV）的一种或多种胺至少部分中和的酸官能单体：R1-NR2R3（ I）R1-N + R2R3R7X-（Ⅱ）R4-C（O）-NR5-R6-NR2R3（Ⅲ）R4-C（O）-NR5-R6-N + R2R3R7X-（Ⅳ）其中R1和R4独立地 C8-C24组; R 2，R 3和R 5独立地为H或C 1 -C 6基，或其中R 2和R 3结合形成任选含有杂原子的长度为4至12个碳原子的直链环; R6是C1-C24基团，R7是H或C1-C12基团，X是卤素，硫酸盐或磺酸盐; （B）一种或多种阳离子单体; 和（C）一种或多种其它单体。

    Process for preparing novel high solids non-aqueous polymer compositions
    10.
    发明授权
    Process for preparing novel high solids non-aqueous polymer compositions 失效

    公开(公告)号：US5480921A

    公开(公告)日：1996-01-02

    申请号：US299689

    申请日：1994-09-01

    申请人： Wood E. Hunter ,  Kevin W. Frederick ,  Randy J. Loeffler

    发明人： Wood E. Hunter ,  Kevin W. Frederick ,  Randy J. Loeffler

    IPC分类号： C08J3/00 ,  C08F6/20 ,  C08J3/09 ,  C08K5/01 ,  C08J9/28 ,  C08L33/02 ,  C08L33/26

    CPC分类号： C08F6/20 ,  C08J3/09

    摘要： The use of falling-film evaporation and a concentration means such as centrifugal separation to dehydrate and concentrate a water-in-oil polymer emulsion or suspension is disclosed. In a preferred embodiment, a water-in-oil polymer composition containing less than about 25% active polymer solids is dehydrated in falling-film evaporator to produce an evaporator concentrate containing less than about 5.0% water. The evaporator concentrate then flows to a separation device such as a centrifuge, wherein oil is removed to produce a composition that is substantially a polymer and emulsifying surfactant-in-oil composition containing in excess of about 60 weight % polymer solids. The centrifuge raffinate may optionally be treated in a second separation means to capture additional polymer solids, with optional recycle of the oil-rich raffinate. The concentrated polymer composition is preferably stabilized with a steric stabilizer to produce a free flowing liquid product.