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    Methods of reducing fluid loss in a wellbore servicing fluid
    1.
    发明授权
    Methods of reducing fluid loss in a wellbore servicing fluid 有权
    减少井筒维修流体中流体损失的方法

    公开(公告)号：US07196039B2

    公开(公告)日：2007-03-27

    申请号：US10733059

    申请日：2003-12-11

    申请人： Bharat B. Patel

    发明人： Bharat B. Patel

    IPC分类号： C09K8/24 ,  C09K8/487 ,  C09K8/76 ,  C09K8/88

    CPC分类号： C09K8/12 ,  C09K8/68 ,  Y10S507/935

    摘要： Methods of reducing the fluid loss from a wellbore servicing fluid include combining a terpolymer with the wellbore servicing fluid to reduce the fluid loss from the fluid, followed by displacing the fluid into a wellbore. In an embodiment, the following monomers are used to make the terpolymer: from about 75 wt. % to about 95 wt. % of 2-acrylamido-2-methylpropanesulfonic acid or an alkali salt thereof; from about 3 wt. % to about 15 wt. % of acrylamide; and from about 3 wt. % to about 15 wt. % of N-vinyl-2-pyrrolidone, all weight percentages being based on a total weight of the monomers. The wellbore servicing fluid may comprise water or an aqueous salt solution such as a formate solution. The wellbore servicing fluid may also comprise clay such as montmorillonite and attapulgite clay.

    摘要翻译： 从井眼维修流体减少流体损失的方法包括将三元共聚物与井筒维修流体组合以减少流体中的流体损失，随后将流体置换成井眼。 在一个实施方案中，使用以下单体制备三元共聚物：约75wt。 ％至约95wt。 ％的2-丙烯酰氨基-2-甲基丙磺酸或其碱金属盐; 约3重量％ ％至约15wt。 ％丙烯酰胺; 和约3重量％ ％至约15wt。 ％的N-乙烯基-2-吡咯烷酮，所有重量百分数都是基于单体的总重量。 井眼维修流体可以包括水或盐水溶液，例如甲酸盐溶液。 井筒维修流体还可以包括粘土，例如蒙脱石和绿坡缕石粘土。

    Drilling fluid
    4.
    发明授权
    Drilling fluid 失效
    钻井液

    公开(公告)号：US4704214A

    公开(公告)日：1987-11-03

    申请号：US659805

    申请日：1984-10-11

    申请人： Jeffrey A. Russell ,  Bharat B. Patel

    发明人： Jeffrey A. Russell ,  Bharat B. Patel

    IPC分类号： C09K8/20 ,  C09K7/02

    CPC分类号： C09K8/203

    摘要： In an aqueous drilling fluid, an improved thinning effect is obtained by adding a first agent comprising a mixture of a sulfoalkylated tannin or polyvalent metal complex thereof with a lignite, optionally in combination with a second agent comprising a metal compound of chromium, titanium, iron, zinc, strontium or magnesium which is at least partially soluble in water.

    摘要翻译： 在含水钻井液中，通过将包含磺烷基化的单宁或其多价金属络合物的混合物的第一试剂与褐煤加入，任选地与包含铬，钛，铁的金属化合物的第二试剂组合，获得改进的减薄效果 ，至少部分可溶于水的锌，锶或镁。

    Sulfonated rubber compositions and processes therefor and therewith
    5.
    发明授权
    Sulfonated rubber compositions and processes therefor and therewith 有权
    磺化橡胶组合物及其工艺

    公开(公告)号：US06547710B1

    公开(公告)日：2003-04-15

    申请号：US09712117

    申请日：2000-11-14

    申请人： Bharat B. Patel ,  Marshall D. Bishop

    发明人： Bharat B. Patel ,  Marshall D. Bishop

    IPC分类号： C08F838

    CPC分类号： C08C19/04 ,  C08C19/20

    摘要： A sulfonated, oxidized rubber composition and a neutralized, sulfonated, oxidized rubber composition are provided. The sulfonated, oxidized rubber composition, preferably a composition containing such sulfonated, oxidized rubber composition, can be used as an additive in or for asphalt. The neutralized, sulfonated, oxidized rubber composition, preferably a composition comprising such neutralized, sulfonated, oxidized rubber composition, can be used for oil field applications such as preventing the loss of fluids used during such oil field applications. A process of preparing such compositions includes contacting a rubber composition, such as butyl rubber in the form of waste tire particles, with an oxidizing agent to provide an oxidized rubber composition. The oxidized rubber composition is then contacted with a sulfur-containing acid to provide a sulfonated, oxidized rubber composition. The sulfonated, oxidized rubber composition is then contacted with a base to provide a neutralized, sulfonated, oxidized rubber composition.

    摘要翻译： 提供磺化氧化橡胶组合物和中和的磺化氧化橡胶组合物。 磺化氧化橡胶组合物，优选含有这种磺化氧化橡胶组合物的组合物可用作沥青中的添加剂或用于沥青。 中和的磺化氧化橡胶组合物，优选包含这种中和的磺化氧化橡胶组合物的组合物可用于油田应用，例如防止在这种油田应用期间使用的流体损失。 制备这种组合物的方法包括将橡胶组合物，例如废轮胎颗粒形式的丁基橡胶与氧化剂接触以提供氧化橡胶组合物。 然后将氧化的橡胶组合物与含硫酸接触以提供磺化的氧化橡胶组合物。 然后将磺化氧化的橡胶组合物与碱接触以提供中和的磺化氧化橡胶组合物。

    Tin/cerium compounds for lignosulfonate processing
    7.
    发明授权
    Tin/cerium compounds for lignosulfonate processing 失效
    用于木质素磺酸盐处理的锡/铈化合物

    公开(公告)号：US5610124A

    公开(公告)日：1997-03-11

    申请号：US336610

    申请日：1994-11-09

    申请人： Bharat B. Patel

    发明人： Bharat B. Patel

    IPC分类号： C07G99/00 ,  C09K8/20 ,  C09K7/02 ,  C07G1/00

    CPC分类号： C09K8/203 ,  C07G17/002

    摘要： This invention concerns tin-, cerium-, and base-treated tin-bearing lignosulfonates, a process for their preparation from calcium lignosulfonate, and a process for the use thereof as drilling fluid additives.

    摘要翻译： 本发明涉及锡，铈和碱处理的含锡木质素磺酸盐，其由木质素磺酸钙制备的方法及其用作钻井液添加剂的方法。

    Composition and process for stabilizing viscosity or controlling water loss of polymer-containing water based fluids
    8.
    发明授权
    Composition and process for stabilizing viscosity or controlling water loss of polymer-containing water based fluids 失效
    用于稳定粘度或控制含聚合物的水基流体失水的组合物和方法

    公开(公告)号：US5576271A

    公开(公告)日：1996-11-19

    申请号：US298740

    申请日：1994-08-31

    申请人： Bharat B. Patel

    发明人： Bharat B. Patel

    IPC分类号： C09K8/05 ,  C09K8/16 ,  C09K7/02

    CPC分类号： C09K8/16 ,  C09K8/05

    摘要： A composition useful for viscosifying a water-based fluid is provided which comprises a polymer such as guar gum, a metal compound such as an aluminum compound. The composition can also contain a polymer such as guar gum, a magnesium compound such as magnesium oxide, a metal aluminate such as sodium aluminate or a metal compound such as an aluminum compound, and optionally a fatty acid or salts thereof. The water-based fluid can also contain a clay such as bentonite. A process for viscosifying a water-based fluid and for substantially retaining the viscosity of the water-based fluid is also provided which comprises contacting the fluid with the composition described herein. Also disclosed is a process for controlling water loss of a water-based drilling fluid wherein the process comprises contacting the fluid with the composition described herein.

    摘要翻译： 提供了一种用于增稠水性流体的组合物，其包括聚合物如瓜尔胶，金属化合物如铝化合物。 该组合物还可以含有聚合物如瓜耳胶，镁化合物如氧化镁，铝酸铝如铝酸钠或金属化合物如铝化合物，以及任选的脂肪酸或其盐。 水性流体还可以含有粘土如膨润土。 还提供了一种用于使水基流体增稠和基本上保持水基流体的粘度的方法，其包括使流体与本文所述的组合物接触。 还公开了一种用于控制水基钻井液的水分损失的方法，其中该方法包括使流体与本文所述的组合物接触。

    Tin/cerium compounds for lignosulfonate processing
    9.
    发明授权
    Tin/cerium compounds for lignosulfonate processing 失效
    用于木质素磺酸盐处理的锡/铈化合物

    公开(公告)号：US5401718A

    公开(公告)日：1995-03-28

    申请号：US981162

    申请日：1992-11-24

    申请人： Bharat B. Patel

    发明人： Bharat B. Patel

    IPC分类号： C07G99/00 ,  C09K8/20 ,  C09K7/02

    CPC分类号： C09K8/203 ,  C07G17/002

    摘要： This invention concerns tin-, cerium-, and base-treated tin-bearing lignosulfonates, a process for their preparation from calcium lignosulfonate, and a process for the use thereof as drilling fluid additives.

    摘要翻译： 本发明涉及锡，铈和碱处理的含锡木质素磺酸盐，其由木质素磺酸钙制备的方法及其用作钻井液添加剂的方法。

    Blended drilling fluid thinner
    10.
    发明授权
    Blended drilling fluid thinner 失效
    混合钻井液更薄

    公开(公告)号：US5399548A

    公开(公告)日：1995-03-21

    申请号：US976818

    申请日：1992-11-16

    申请人： Bharat B. Patel

    发明人： Bharat B. Patel

    IPC分类号： C09K8/03 ,  C09K8/12 ,  C09K8/24 ,  E21B21/00 ,  C09K7/02 ,  E21B43/16

    CPC分类号： C09K8/24 ,  C09K8/12 ,  Y10S507/925

    摘要： A blended additive composition, which is useful for thinning aqueous drilling fluids, is disclosed. The composition includes a first component selected from the group including: a modified tannin, a modified lignite and sodium lignosulfonate; a second component being a polymer prepared from acrylic acid; and a third component being a metal compound selected from the group of metals including iron, tin, chromium, manganese, titanium, aluminum and zinc.

    摘要翻译： 公开了一种可用于稀释含水钻井液的混合添加剂组合物。 该组合物包括选自以下的第一组分：改性单宁，改性褐煤和木素磺酸钠; 第二组分是由丙烯酸制备的聚合物; 第三成分是选自铁，锡，铬，锰，钛，铝和锌的金属的金属化合物。