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1. 发明授权

US08541051B2 On-the fly coating of acid-releasing degradable material onto a particulate 有权
标题翻译：将释放酸的可降解材料的飞沫涂层在颗粒上
公开(公告)号：US08541051B2
公开(公告)日：2013-09-24
申请号：US10736339
申请日：2003-12-15
申请人： Rajesh K. Saini , Bradley L. Todd
发明人： Rajesh K. Saini , Bradley L. Todd
IPC分类号： B05D7/00 , E21B43/16
CPC分类号： C09K8/536 , C09K8/706 , C09K8/72 , C09K8/805 , E21B43/04
摘要： The present invention relates to methods and compositions for treating subterranean formations, and more specifically, to improved methods and compositions for degrading filter cake deposited on a subterranean formation. One embodiment of the present invention provides a method of creating particulates coated with acid-releasing degradable material on-the-fly comprising the step of: combining an acid-releasing degradable material with a solvent or a plasticizer to create a coating solution; and, coating the coating solution onto a particulate on-the-fly to create coated particulates. Another embodiment of the present invention provides a gravel pack comprising gravel particles coated on-the-fly with an acid-releasing degradable material.
摘要翻译：本发明涉及用于处理地下地层的方法和组合物，更具体地说，涉及降解沉积在地层上的滤饼的改进方法和组合物。本发明的一个实施方案提供了一种在真空下产生涂有释放酸的可降解材料的颗粒的方法，包括以下步骤：将释放酸的可降解材料与溶剂或增塑剂组合以产生涂布溶液; 并将该涂层溶液涂覆在颗粒上以形成涂覆的微粒。本发明的另一个实施方案提供了一种砾石充填包，其中包含用脱酸剂降解材料在飞行中涂覆的砾石颗粒。

2. 发明申请

US20130081801A1 Methods for Improving Coatings on Downhole Tools 审中-公开
标题翻译：改善井下工具涂料的方法
公开(公告)号：US20130081801A1
公开(公告)日：2013-04-04
申请号：US13252403
申请日：2011-10-04
申请人： Feng Liang , Bradley L. Todd , Thomas D. Welton , Rajesh K. Saini
发明人： Feng Liang , Bradley L. Todd , Thomas D. Welton , Rajesh K. Saini
IPC分类号： E21B33/12 , E21B43/00 , E21B34/06 , E21B17/00 , B05D3/10 , E21B43/08
CPC分类号： E21B43/08 , C09D5/008
摘要： The present invention relates to the use of degradable coatings suitable for use on downhole tools. In particular, the present invention relates to pliable coatings for use on downhole tools that have been designed to be able to resist flaking or breaking off of the tool in response to a physical shock. Some embodiments of the present invention provide methods of reacting lactic acid, glycolic acid, or a combination thereof in a polymerization reaction to form a degradable polymer; combining the degradable polymer and a plasticizer to form a coating composition; applying the coating composition to a downhole tool; placing the coated downhole tool into a portion of a subterranean formation; and, hydrolyzing the degradable polymer of the coating composition to release an acid and degrade the coating.
摘要翻译：本发明涉及适用于井下工具的可降解涂料的应用。特别地，本发明涉及用于井下工具的柔性涂层，其被设计成能够抵抗物理冲击而抵抗工具的剥落或破裂。本发明的一些实施方案提供了在聚合反应中使乳酸，乙醇酸或其组合反应形成可降解聚合物的方法; 组合可降解聚合物和增塑剂以形成涂料组合物; 将涂料组合物施加到井下工具; 将涂覆的井下工具放置在地层的一部分中; 并且水解涂料组合物的可降解聚合物以释放酸并降解涂层。

3. 发明申请

US20080035342A1 Non-acid acidizing methods and compositions 有权
标题翻译：非酸酸化方法和组合物
公开(公告)号：US20080035342A1
公开(公告)日：2008-02-14
申请号：US11502285
申请日：2006-08-10
申请人： Rajesh K. Saini , Bradley L. Todd , David E. McMechan , Thomas D. Welton , Richard W. Pauls
发明人： Rajesh K. Saini , Bradley L. Todd , David E. McMechan , Thomas D. Welton , Richard W. Pauls
IPC分类号： E21B43/22 , E21B43/27
CPC分类号： E21B43/26 , C09K8/72
摘要： Methods of acidizing subterranean formations or well bores, and more specifically, to acidizing systems involving acid-generating fluids that comprise acid-generating compounds and associated methods are provided. An example of a method of the present invention comprises: providing an acid-generating fluid that comprises an acid-generating compound; placing the acid-generating fluid into a well bore penetrating a subterranean formation; and allowing the acid-generating compound to produce an acid that then acidizes at least a portion of the subterranean formation or damage contained in the formation or well bore.
摘要翻译：提供酸化地下地层或井眼的方法，更具体地说，涉及包含酸产生化合物和相关方法的产酸流体的酸化体系。本发明的方法的一个实例包括：提供包含产酸化合物的产酸流体; 将产酸流体置于贯穿地下地层的井眼中; 并且允许产酸化合物产生一种酸，然后酸化至少一部分地层或包含在地层或井眼中的损伤。

4. 发明授权

US08936086B2 Methods of fluid loss control, diversion, and sealing using deformable particulates 有权
标题翻译：使用可变形颗粒的流体损失控制，引流和密封方法
公开(公告)号：US08936086B2
公开(公告)日：2015-01-20
申请号：US13252349
申请日：2011-10-04
申请人： Feng Liang , Bradley L. Todd , Thomas D. Welton , Rajesh K. Saini
发明人： Feng Liang , Bradley L. Todd , Thomas D. Welton , Rajesh K. Saini
IPC分类号： E21B33/13 , C09K8/508 , C09K8/035
CPC分类号： C09K8/035 , C09K8/508
摘要： Method including the steps of providing a treatment fluid that comprises a base fluid and polymeric particulates and introducing the treatment fluid into a subterranean formation having a temperature above about 65° C. The polymeric particulates comprise a degradable polymer and a plasticizer and exhibit a Tg above about −15° C. When the polymeric particulates are placed into a subterranean formation having a temperature above about 65° C. they transform from rigid form to malleable form and are able to provide fluid loss, seal the rock surfaces for fluid diversion, or plug an area along the annulus of a well bore. The malleable particulates then degrade over time in the subterranean formation.
摘要翻译：方法包括提供包括基础流体和聚合物颗粒的处理流体并将处理流体引入温度高于约65℃的地下地层的步骤。聚合物颗粒包含可降解聚合物和增塑剂并且显示Tg高于约-15℃。当将聚合物颗粒置于温度高于约65℃的地下地层中时，它们从刚性形式转变为可延展形式并且能够提供流体损失，密封岩石表面用于流体分流，或沿着井眼的环带堵塞一个区域。然后随着时间的推移，可延展的颗粒在地层中降解。

5. 发明授权

US08720555B2 Self-diverting high-rate water packs 有权
标题翻译：自转高速水包
公开(公告)号：US08720555B2
公开(公告)日：2014-05-13
申请号：US13252373
申请日：2011-10-04
申请人： Feng Liang , Bradley L. Todd , Rajesh K. Saini , Stanley J. Heath
发明人： Feng Liang , Bradley L. Todd , Rajesh K. Saini , Stanley J. Heath
IPC分类号： E21B43/25 , E21B43/267 , C09K8/80
CPC分类号： C09K8/56 , C09K8/68 , C09K8/805 , E21B43/04
摘要： A method for diverting fluids across a perforation tunnel in high-rate water pack operations may include providing a wellbore extending into a subterranean formation, wherein a perforation tunnel provides a fluid connection between the wellbore and the subterranean formation; providing a diverting particulate that comprises a degradable plasticized polymer coating on a particulate; placing the diverting particulate into the perforation tunnel, wherein the step of placing the diverting particulate forms a particulate pack within the subterranean formation and the perforation tunnel; allowing the degradable plasticized polymer coating to deform and fill the interstitial spaces within the particulate pack in the perforation tunnel such that the fluid conductivity between the wellbore and the subterranean formation is substantially blocked; and allowing the plasticized polymer coating to degrade over time thereby substantially restoring the fluid conductivity between the wellbore and the subterranean formation.
摘要翻译：在高速水包装操作中将流体转移穿过穿孔隧道的方法可以包括提供延伸到地下地层中的井眼，其中穿孔在井筒和地下地层之间提供流体连接; 提供包含颗粒上的可降解塑化聚合物涂层的转向颗粒; 将转向颗粒放置到穿孔隧道中，其中放置转向颗粒的步骤在地层和穿孔隧道内形成颗粒状包装; 允许可降解塑化聚合物涂层变形并填充穿孔隧道内的颗粒包装内的间隙空间，使得井筒和地下地层之间的流体传导性基本上被阻挡; 并且允许塑化的聚合物涂层随着时间的推移而降解，从而基本上恢复井筒和地下地层之间的流体传导性。

6. 发明申请

US20130081813A1 Methods of Fluid Loss Control, Diversion, and Sealing Using Deformable Particulates 有权
标题翻译：使用可变形颗粒的流体损失控制，引流和密封方法
公开(公告)号：US20130081813A1
公开(公告)日：2013-04-04
申请号：US13252349
申请日：2011-10-04
申请人： Feng Liang , Bradley L. Todd , Thomas D. Welton , Rajesh K. Saini
发明人： Feng Liang , Bradley L. Todd , Thomas D. Welton , Rajesh K. Saini
IPC分类号： E21B43/22
CPC分类号： C09K8/035 , C09K8/508
摘要： Method including the steps of providing a treatment fluid that comprises a base fluid and polymeric particulates wherein the polymeric particulates comprise a degradable polymer and a plasticizer and exhibit a Tg above about −15° C.; introducing the treatment fluid into a subterranean formation having a temperature above about 65° C. such that the particulates transform from rigid to malleable form and are able to provide fluid loss, seal the rock surfaces for fluid diversion, or plug an area along the annulus of a well bore; and, degrading the malleable particulates over time in the subterranean formation.
摘要翻译：方法包括提供包含基础流体和聚合物颗粒的处理流体的步骤，其中聚合物颗粒包含可降解聚合物和增塑剂，并且具有高于约-15℃的Tg。将处理流体引入具有高于约65℃的温度的地下地层，使得颗粒从刚性变形为可延展形式并且能够提供流体损失，密封岩石表面用于流体分流，或者沿着环形空间的井眼; 并且在地下地层中随着时间的推移降解可延展的颗粒物。

7. 发明授权

US08545935B2 On-the-fly coating of acid-releasing degradable material onto a particulate 有权
标题翻译：将释放酸的可降解材料即时涂布在颗粒上
公开(公告)号：US08545935B2
公开(公告)日：2013-10-01
申请号：US13435400
申请日：2012-03-30
申请人： Rajesh K. Saini , Bradley L. Todd
发明人： Rajesh K. Saini , Bradley L. Todd
IPC分类号： B05D7/00
CPC分类号： C09K8/536 , C09K8/706 , C09K8/72 , C09K8/805 , E21B43/04
摘要： Methods of creating particulates coated with acid-releasing degradable material comprising the steps of: combining an acid-releasing degradable material with a solvent or a plasticizer to create a coating solution; providing a first flowing stream comprising the coating solution; providing a second flowing stream comprising particulates; and, combining the first and second flowing streams to create a third flowing stream comprising particulates coated with the coating solution. Wherein the acid-releasing degradable material comprises at least one acid-releasing degradable material selected from the group consisting of: poly(orthoester); a lactide, a poly(lactide); a glycolide; a poly(glycolide); a poly(ε-caprolactone); a poly(hydroxybutyrate); a substantially water insoluble anhydride; a poly(anhydride); a poly(amino acid); a copolymer of two or more of the above-listed compounds; and any combination thereof.
摘要翻译：制备涂有释放酸的可降解材料的颗粒的方法，包括以下步骤：将释放酸的可降解材料与溶剂或增塑剂结合以产生涂布溶液; 提供包含所述涂布溶液的第一流动流; 提供包含微粒的第二流动流; 以及组合第一和第二流动流以产生包含涂覆有涂层溶液的微粒的第三流动流。其中所述释放酸的可降解材料包含至少一种选自以下的释放酸的可降解材料：聚（原酸酯）; 丙交酯，聚（丙交酯）; 乙交酯; 聚（乙交酯）; 聚（ε-己内酯）; 聚（羟基丁酸酯）; 基本上不溶于水的酸酐; 聚（酸酐）; 聚（氨基酸）; 两种或更多种上述化合物的共聚物; 及其任何组合。

8. 发明申请

US20130081821A1 Reinforcing Amorphous PLA with Solid Particles for Downhole Applications 审中-公开
标题翻译：用固体颗粒增强无定形PLA用于井下应用
公开(公告)号：US20130081821A1
公开(公告)日：2013-04-04
申请号：US13252327
申请日：2011-10-04
申请人： Feng Liang , Rajesh K. Saini , Bradley L. Todd
发明人： Feng Liang , Rajesh K. Saini , Bradley L. Todd
IPC分类号： E21B37/00 , C08L67/04 , C09D167/04 , B82Y99/00 , B82Y30/00
CPC分类号： C09K8/03 , C08J3/201 , C08J2367/04 , C08L101/16 , C09D167/04 , C09K8/50 , C09K8/516
摘要： The present invention relates to the use of composite material in downhole applications, and more particularly, relates to methods of making composite material comprising reinforced amorphous polylactic acid and methods of use related thereto. Some methods comprise providing an amorphous polylactic acid and a solid reinforcing material; forming a composite material by melting the amorphous polylactic acid and mixing it with the solid reinforcing material; and, using the composite material in a downhole application.
摘要翻译：本发明涉及复合材料在井下应用中的应用，更具体地涉及制备包含增强的无定形聚乳酸的复合材料的方法及其相关使用方法。一些方法包括提供无定形聚乳酸和固体增强材料; 通过熔化无定形聚乳酸并将其与固体增强材料混合而形成复合材料; 并且在井下应用中使用复合材料。

9. 发明授权

US07795186B2 Fluid-loss control pills comprising breakers that comprise orthoesters and/or poly(orthoesters) and methods of use 有权
标题翻译：含有包含原酸酯和/或聚（原酸酯）和使用方法的断裂器的流体损失控制丸
公开(公告)号：US07795186B2
公开(公告)日：2010-09-14
申请号：US12488966
申请日：2009-06-22
申请人： Rajesh K. Saini , Karen Savery , Bradley L. Todd
发明人： Rajesh K. Saini , Karen Savery , Bradley L. Todd
IPC分类号： E21B43/26 , C09K8/70
CPC分类号： C09K8/506 , C09K8/512 , C09K8/514
摘要： Provided herein are methods and compositions for generating acids for use downhole, for example, to break fluid-loss control pills. The delayed-release acid breakers of the present invention comprise orthoesters and/or poly(orthoesters).
摘要翻译：本文提供了用于产生用于井下的酸的方法和组合物，例如以破坏流体损失控制药丸。本发明的延迟释放酸分离器包括原酸酯和/或聚（原酸酯）。

10. 发明申请

US20080035341A1 Non-acid acidizing methods and compositions 有权
标题翻译：非酸酸化方法和组合物
公开(公告)号：US20080035341A1
公开(公告)日：2008-02-14
申请号：US11502284
申请日：2006-08-10
申请人： Rajesh K. Saini , Bradley L. Todd , David E. McMechan , Thomas D. Welton , Richard W. Pauls
发明人： Rajesh K. Saini , Bradley L. Todd , David E. McMechan , Thomas D. Welton , Richard W. Pauls
IPC分类号： E21B43/27 , E21B43/22
CPC分类号： C09K8/72
摘要： Methods of acidizing subterranean formations or well bores, and more specifically, to acidizing systems involving acid-generating fluids that comprise acid-generating compounds and associated methods are provided. An example is a method that comprises: providing an acid-generating fluid that comprises an acid-generating compound; placing the acid-generating fluid into a subterranean formation; and allowing an acid to generate from the acid-generating fluid.
摘要翻译：提供酸化地下地层或井眼的方法，更具体地说，涉及包含产酸化合物和相关方法的产酸流体的酸化体系。一个实例是一种方法，其包括：提供包含酸产生化合物的产酸流体; 将产酸流体置于地层中; 并且允许酸从产酸流体产生。

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