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    COMPOSITIONS AND METHODS FOR BREAKING A VISCOSITY INCREASING POLYMER AT VERY LOW TEMPERATURE USED IN DOWNHOLE WELL APPLICATIONS
    21.
    发明申请
    COMPOSITIONS AND METHODS FOR BREAKING A VISCOSITY INCREASING POLYMER AT VERY LOW TEMPERATURE USED IN DOWNHOLE WELL APPLICATIONS 有权
    组合物和方法，用于破坏粘度增加聚合物在非常低的温度下使用在井下良好的应用

    公开(公告)号：US20110152132A1

    公开(公告)日：2011-06-23

    申请号：US13039777

    申请日：2011-03-03

    申请人： Michael W. Sanders ,  Jeffrey L. Mundy ,  Fong Fong Foo ,  Rajesh K. Saini

    发明人： Michael W. Sanders ,  Jeffrey L. Mundy ,  Fong Fong Foo ,  Rajesh K. Saini

    IPC分类号： C09K8/00

    CPC分类号： C09K8/524 ,  C09K8/68 ,  C09K8/90 ,  C09K2208/26

    摘要： A composition for treating a portion of a wellbore or a portion of a subterranean formation is provided, the composition comprising: (a) water; (b) a source of hydrogen peroxide, and (c) an activator for the source of hydrogen peroxide; wherein the pH of the composition is adjusted to be within an appropriate range for the type of activator. A method for treating a portion of a wellbore or a portion of a subterranean formation, the method comprising the steps of: forming or providing a composition comprising: (a) water; (b) a source of hydrogen peroxide, and (c) an activator for the source of hydrogen peroxide; wherein the pH of the composition is adjusted within an appropriate range for the type of activator; and introducing the composition through a wellbore to treat a portion of a wellbore or a portion of a subterranean formation. The activator can be a water-soluble alkanoyl-donor compound or a chelated transition metal. Preferably, the composition further comprises an iron chelating agent. The composition and method are adapted for breaking a viscosity increasing polymer, such as xanthan. The method has particular applications where the static temperature of the portion of the wellbore or the portion of the subterranean formation to be treated is less than 100° F. (38° C.).

    摘要翻译： 提供了一种用于处理一部分井孔或一部分地层的组合物，该组合物包含：（a）水; （b）过氧化氢源，和（c）用于过氧化氢源的活化剂; 其中将组合物的pH调节到活化剂类型的适当范围内。 一种用于处理井筒或地下地层的一部分的一部分的方法，所述方法包括以下步骤：形成或提供组合物，其包含：（a）水; （b）过氧化氢源，和（c）用于过氧化氢源的活化剂; 其中将组合物的pH调节到活化剂类型的适当范围内; 并通过井筒引入组合物以处理井筒或地下地层的一部分的一部分。 活化剂可以是水溶性烷酰基供体化合物或螯合过渡金属。 优选地，组合物还包含铁螯合剂。 该组合物和方法适用于破坏增粘聚合物如黄原胶。 该方法具有特定的应用，其中井眼部分或待处理的地下部分的静态温度小于100°F（38℃）。

    Methods and compositions for treating subterranean formations
    26.
    发明申请
    Methods and compositions for treating subterranean formations 有权
    用于处理地下地层的方法和组合物

    公开(公告)号：US20100048431A1

    公开(公告)日：2010-02-25

    申请号：US12229229

    申请日：2008-08-21

    申请人： Rajesh K. Saini ,  Michael W. Sanders ,  Fong-Fong Foo ,  Jeff L. Mundy

    发明人： Rajesh K. Saini ,  Michael W. Sanders ,  Fong-Fong Foo ,  Jeff L. Mundy

    IPC分类号： C09K8/60

    CPC分类号： C09K8/88 ,  C09K2208/26

    摘要： Methods and compositions useful in treating subterranean formations, and more particularly, breaker compositions that may be useful in treating subterranean formations wherein synthetic polymers are used, are provided. Of the many methods and compositions provided herein, one composition comprises a source of hydrogen peroxide and an activator. One method comprises providing a polymer breaker composition comprising a source of hydrogen peroxide and an activator; introducing the polymer breaker composition into a well bore which penetrates a subterranean formation; allowing the activator to activate the source of hydrogen peroxide to create an oxidizing species; and allowing the oxidizing species to break synthetic polymers present in the subterranean formation.

    摘要翻译： 提供了可用于处理地下地层的方法和组合物，更具体地，提供可用于处理其中使用合成聚合物的地下地层的破碎组合物。 在本文提供的许多方法和组合物中，一种组合物包含过氧化氢源和活化剂。 一种方法包括提供包含过氧化氢源和活化剂的聚合物破乳剂组合物; 将聚合物破碎剂组合物引入穿透地层的井眼中; 允许活化剂活化过氧化氢源以产生氧化物质; 并允许氧化物质破坏存在于地层中的合成聚合物。

    Methods and apparatus for completing wells
    27.
    发明授权
    Methods and apparatus for completing wells 有权

    公开(公告)号：US07100691B2

    公开(公告)日：2006-09-05

    申请号：US10944131

    申请日：2004-09-17

    申请人： Philip D. Nguyen ,  Michael W. Sanders ,  Ronald A. Gibson ,  David Leslie Lord ,  David Eugene McMechan

    发明人： Philip D. Nguyen ,  Michael W. Sanders ,  Ronald A. Gibson ,  David Leslie Lord ,  David Eugene McMechan

    IPC分类号： E21B43/04 ,  E21B43/08

    CPC分类号： E21B43/08 ,  E21B43/045

    摘要： Improved methods and apparatus for completing a subterranean zone penetrated by a wellbore are provided. The improved methods basically comprise the steps of placing a sand control screen (e.g., screens, screened pipes, perforated liners, prepacked screens, etc.) and an outer shroud assembly mounted over the sand screen in the wellbore adjacent the zone to be completed, the shroud having perforated and blank (non-perforated) segments with the blank segments corresponding to selected intervals of the wellbore, for example problem zones such as shale streaks or isolated zones where flows are restricted by mechanical seals or packers, and injecting particulate material into the wellbore, whereby gravel packing takes place in the remaining length of the wellbore/shroud annulus without voids. The inner annulus between the shroud and screen provides an alternate flow path for the slurry to bypass the blocked intervals and continue with its placement. Mechanical seals or packers may be used in combination with the shroud and associated sand screen. The method is also applicable to placing gravel packs in a cased and perforated well drilled in the zone.