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公开(公告)号：US06971448B2
公开(公告)日：2005-12-06
申请号：US10376182
申请日：2003-02-26
IPC分类号： F16D69/02 , E21B33/138
CPC分类号： C09K8/512
摘要： Methods and compositions for sealing subterranean zones having temperatures in the range of from about 80° F. to about 300° F. are provided. A method of the invention is basically comprised of the steps of providing a subterranean zone sealing composition that becomes substantially rigid when exposed to subterranean zone temperatures above about 80° F. and has a pH above about 8.5 comprised of water, a substantially fully hydrated depolymerized polymer and a cross-linking agent. The sealing composition is introduced into the subterranean zone whereby it becomes rigid and seals the zone. The sealing composition can subsequently be removed by contact with a fluid having a pH below about 8 when a boron compound is utilized as the cross-linking agent.
摘要翻译： 提供了用于密封温度在约80°F至约300°F范围内的地下区域的方法和组合物。 本发明的方法基本上包括以下步骤：提供地下区域密封组合物，当暴露于高于约80°F的地下区域温度时变得基本上刚性，并且具有高于约8.5的pH，由水组成，基本上完全水合的解聚 聚合物和交联剂。 密封组合物被引入地下区域，由此它变得刚性并密封该区域。 当硼化合物用作交联剂时，密封组合物随后可以通过与pH低于约8的流体接触来除去。
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公开(公告)号：US07276466B2
公开(公告)日：2007-10-02
申请号：US10650101
申请日：2003-08-26
摘要： The present invention relates to improved methods and compositions for reducing the viscosity of subterranean servicing fluids where the servicing fluid has been cross-linked to increase its viscosity and that crosslinking can be reversed using a delayed release acid produced to reduce the fluid's pH.
摘要翻译： 本发明涉及用于降低地下维修液的粘度的改进方法和组合物，其中维修液已经被交联以增加其粘度，并且可以使用所产生的延迟释放酸来逆转交联以降低流体的pH。
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3.发明授权公开(公告)号：US07096947B2
公开(公告)日：2006-08-29
申请号：US10765334
申请日：2004-01-27
IPC分类号： E21B43/26 , E21B43/267
CPC分类号： C09K8/62 , C09K8/508 , C09K8/64 , C09K8/665 , C09K8/68 , Y10S507/906 , Y10S507/922
摘要： The present invention relates to subterranean fracturing operations, and more particularly to fracturing fluids that includes a fluid loss control additive, and methods of using such fracturing fluids in fracturing subterranean formations. In one embodiment, a fracturing fluid of the present invention includes a viscosifier; and a fluid loss control additive that includes a deformable, degradable material.
摘要翻译： 本发明涉及地下压裂操作，更具体地涉及包括流体损失控制添加剂的压裂流体，以及在压裂地下地层中使用这种压裂流体的方法。 在一个实施方案中，本发明的压裂液包括增粘剂; 以及包含可变形的可降解材料的流体损失控制添加剂。
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公开(公告)号：US07281583B2
公开(公告)日：2007-10-16
申请号：US11088559
申请日：2005-03-24
CPC分类号： C09K8/512
摘要： Methods and compositions for sealing subterranean zones having temperatures in the range of about 80° F. to about 300° F. are provided. In a method of the invention, a sealing composition of the invention of water, a substantially fully hydrated depolymerized polymer and poly lactic acid, with a pH above about 8.5, is introduced into the subterranean zone wherein it becomes substantially rigid and seals the zone when exposed to subterrnean zone temperatures above about 80° F.
摘要翻译： 提供了用于密封温度在约80°F至约300°F范围内的地下区域的方法和组合物。 在本发明的方法中，将本发明的水，基本上完全水合的解聚聚合物和聚乳酸的pH值高于约8.5的密封组合物引入到地下区域中，其中其变得基本上刚性并且当 暴露于高于约80°F的亚区域温度。
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公开(公告)号：US08563480B2
公开(公告)日：2013-10-22
申请号：US12786814
申请日：2010-05-25
CPC分类号： C09K8/5045 , C09K8/03 , C09K8/06 , C09K8/508 , C09K8/52 , C09K2208/18 , Y10T428/2982
摘要： The present invention relates to bridging agents for use in subterranean formations, to well drill-in and servicing fluids comprising such bridging agents, and to methods of using such bridging agents and well drill-in and servicing fluids in subterranean drilling operations. An example of a well drill-in and servicing fluid of the present invention comprises a viscosified fluid, a fluid loss control additive, and a bridging agent comprising a degradable material.
摘要翻译： 本发明涉及用于地下地层，用于钻井和维修包含这种桥接剂的流体的桥连剂，以及在地下钻井操作中使用这种桥接剂和井钻井和维修流体的方法。 本发明的钻井和维修流体的实例包括增稠流体，流体损失控制添加剂和包含可降解材料的桥连剂。
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6.发明授权Downhole wellbore tools having deteriorable and water-swellable components thereof and methods of use 失效井下井眼工具具有恶化的水溶胀性组分和使用方法公开(公告)号：US07661481B2
公开(公告)日：2010-02-16
申请号：US11447475
申请日：2006-06-06
CPC分类号： E21B33/134 , E21B33/12
摘要： An apparatus is provided for use as a downhole tool or a component thereof for insertion into a wellbore. According to one aspect, the apparatus has a body having a chamber, wherein at least a portion of the body is radially expandable; and a water-swellable material in the chamber, wherein the water-swellable material is dissolvable in water. According to another aspect, the apparatus has a body having a chamber, wherein at least a portion of the body is radially expandable, and wherein at least a portion of the body is made with a material that is deteriorable by hydrolysis; and a water-swellable material in the chamber. According to a further aspect, the water-swellable material is dissolvable in water. A process of temporarily blocking or sealing a wellbore is also provided, including moving an apparatus according to the invention through a wellbore to a selected position in the wellbore; exposing the water-swellable material to water or an aqueous fluid to expand the apparatus into engagement with the wellbore; performing a well completion, servicing, or workover operation in which the apparatus is contacted with fluids; and thereafter, allowing the deteriorable material to deteriorate and/or allowing the water-swellable material to dissolve.
摘要翻译： 提供一种用作井下工具或其部件用于插入井眼的装置。 根据一个方面，该装置具有一个具有室的主体，其中主体的至少一部分是可径向扩张的; 以及所述室中的水溶胀性材料，其中所述水溶胀性材料可溶于水。 根据另一方面，所述装置具有主体，该主体具有腔室，其中所述主体的至少一部分是径向可膨胀的，并且其中所述主体的至少一部分由可通过水解而劣化的材料制成; 和室内的水溶胀材料。 根据另一方面，水溶胀性材料可溶于水。 还提供了临时封闭或密封井眼的过程，包括将根据本发明的设备通过井筒移动到井眼中的选定位置; 将水溶胀材料暴露于水或含水流体以使设备膨胀成与井眼接合; 执行设备与流体接触的完井，维修或修井操作; 然后使劣化物质劣化和/或使水溶胀性物质溶解。
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7.发明授权Treatment fluids comprising starch and ceramic particulate bridging agents and methods of using these fluids to provide fluid loss control 有权包含淀粉和陶瓷颗粒桥联剂的处理流体以及使用这些流体以提供流体损失控制的方法公开(公告)号：US07462581B2
公开(公告)日：2008-12-09
申请号：US11701748
申请日：2007-02-02
IPC分类号： C09K8/60 , E21B33/134
CPC分类号： C09K8/516 , C09K8/16 , C09K8/206 , C09K8/5045 , C09K8/514 , C09K2208/18 , Y10S507/935
摘要： Compositions relating to fluid loss control operations are provided. In some embodiments, fluid loss treatment fluid compositions are provided that may comprise ceramic particulate bridging agents, wherein at least a portion of the ceramic particulate bridging agents comprise chemically bonded particulates, a partially depolymerized starch derivative, and a base fluid are provided. In other embodiments, fluid loss treatment fluid compositions are provided comprising ceramic particulate bridging agents, wherein at least a portion of the ceramic particulate bridging agents are substantially insoluble in water; a partially depolymerized starch derivative, and a base fluid.
摘要翻译： 提供了关于流体损失控制操作的组成。 在一些实施方案中，提供了可包含陶瓷颗粒桥联剂的流体损失处理流体组合物，其中至少一部分陶瓷颗粒桥连剂包含化学键合的颗粒，部分解聚的淀粉衍生物和基础流体。 在其它实施方案中，提供了包含陶瓷颗粒桥联剂的流体损失处理流体组合物，其中至少一部分陶瓷颗粒桥连剂基本上不溶于水; 部分解聚的淀粉衍生物和基础液。
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8.发明授权Compositions and methods for improving proppant pack permeability and fracture conductivity in a subterranean well 有权用于改善地下井中支撑剂填料渗透性和断裂导电性的组合物和方法公开(公告)号：US07044220B2
公开(公告)日：2006-05-16
申请号：US10608291
申请日：2003-06-27
IPC分类号： E21B43/267 , E21B33/138
CPC分类号： C09K8/805 , C09K8/80 , E21B43/267 , Y10S507/906 , Y10S507/924
摘要： The present invention relates to enhancing fluid flow from subterranean formations. More particularly, this invention relates to providing improved proppant matrixes within fractures in a subterranean formation. An example of the methods of increasing the conductivity of a fracture in a subterranean formation comprises the steps of providing a fracturing treatment fluid comprising a proppant composition, the proppant composition comprising proppant particulates and a degradable material capable of undergoing an irreversible degradation downhole; introducing the proppant composition to the fracture; and allowing the proppant composition to form a proppant matrix having voids in the fracture.
摘要翻译： 本发明涉及增强地下地层的流体流动。 更具体地，本发明涉及在地层中的裂缝内提供改进的支撑剂基质。 增加地层中断裂导电性的方法的实例包括提供包括支撑剂组合物的压裂处理流体的步骤，所述支撑剂组合物包含支撑剂颗粒和能够在井下经历不可逆降解的可降解材料; 将支撑剂组合物引入裂缝中; 并允许支撑剂组合物形成在裂缝中具有空隙的支撑剂基质。
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9.发明授权Subterranean treatment fluids comprising a degradable bridging agent and methods of treating subterranean formations 有权包含可降解桥接剂的地下处理流体和处理地下地层的方法公开(公告)号：US07829507B2
公开(公告)日：2010-11-09
申请号：US10664126
申请日：2003-09-17
CPC分类号： C09K8/5045 , C09K8/03 , C09K8/06 , C09K8/508 , C09K8/52 , C09K2208/18 , Y10T428/2982
摘要： The present invention relates to bridging agents for use in subterranean formations, to well drill-in and servicing fluids comprising such bridging agents, and to methods of using such bridging agents and well drill-in and servicing fluids in subterranean drilling operations. An example of a well drill-in and servicing fluid of the present invention comprises a viscosified fluid, a fluid loss control additive, and a bridging agent comprising a degradable material.
摘要翻译： 本发明涉及用于地下地层，用于钻井和维修包含这种桥接剂的流体的桥连剂，以及在地下钻井操作中使用这种桥接剂和井钻井和维修流体的方法。 本发明的钻井和维修流体的实例包括增稠流体，流体损失控制添加剂和包含可降解材料的桥连剂。
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公开(公告)号：US07353879B2
公开(公告)日：2008-04-08
申请号：US10803689
申请日：2004-03-18
申请人： Bradley L. Todd , Phillip M. Starr , Loren C. Swor , Kenneth L. Schwendemann , Trinidad Munoz, Jr.
发明人： Bradley L. Todd , Phillip M. Starr , Loren C. Swor , Kenneth L. Schwendemann , Trinidad Munoz, Jr.
IPC分类号： E21B29/00
摘要： A disposable downhole tool or a component thereof comprises an effective amount of biodegradable material such that the tool or the component thereof desirably decomposes when exposed to a wellbore environment. In an embodiment, the biodegradable material comprises a degradable polymer. The biodegradable material may further comprise a hydrated organic or inorganic solid compound. The biodegradable material may also be selected to achieve a desired decomposition rate when the tool is exposed to the wellbore environment. In an embodiment, the disposable downhole tool further comprises an enclosure for storing a chemical solution that catalyzes decomposition. The tool may also comprise an activation mechanism for releasing the chemical solution from the enclosure. In various embodiments, the disposable downhole tool is a frac plug, a bridge plug, or a packer.
摘要翻译： 一次性井下工具或其组件包括有效量的可生物降解的材料，使得当暴露于井眼环境时，该工具或其组分期望分解。 在一个实施方案中，生物可降解材料包含可降解聚合物。 可生物降解材料还可以包含水合有机或无机固体化合物。 当工具暴露于井眼环境时，还可以选择可生物降解的材料以达到期望的分解速率。 在一个实施例中，一次性井下工具还包括用于存储催化分解的化学溶液的外壳。 工具还可以包括用于将化学溶液从外壳释放的激活机构。 在各种实施例中，一次性井下工具是压裂塞，桥塞或封隔器。
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