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1. 发明授权

US07971644B2 Fluid loss additive and breaking agent 有权
标题翻译：流体损失添加剂和破坏剂
公开(公告)号：US07971644B2
公开(公告)日：2011-07-05
申请号：US12356276
申请日：2009-01-20
申请人： Hemant K. Ladva , Syed Ali , Mohan K. R. Panga , Richard D. Hutchins , Don Williamson
发明人： Hemant K. Ladva , Syed Ali , Mohan K. R. Panga , Richard D. Hutchins , Don Williamson
IPC分类号： E21B43/267
CPC分类号： C09K8/68 , C09K8/70 , C09K8/88
摘要： A system includes a hydraulic fracturing fluid including a polymeric constituent and an additive having particles including poly-vinyl acetate in an amount sufficient to control fluid loss. The system includes a formation of interest having a downhole temperature, and the particles including poly-vinyl acetate have a size and/or shape such that the poly-vinyl acetate hydrolyses at the downhole temperature. The particles may have a size and/or shape such that the particles are deformable at the downhole temperature. The poly-vinyl acetate in the particles may be a part of the particle substrate, a coating on the particles, and/or the entire particle may be poly-vinyl acetate. The poly-vinyl acetate may be included in any portion of the hydraulic fracturing fluid, or only the portion of the hydraulic fracturing fluid that is not proppant laden.
摘要翻译：一种系统包括水力压裂流体，其包括聚合物成分和具有足以控制流体损失的量的包含聚乙酸乙烯酯的颗粒的添加剂。该系统包括具有井下温度的感兴趣的形成，并且包括聚乙酸乙烯酯的颗粒具有尺寸和/或形状，使得聚乙酸乙烯酯在井下温度下水解。颗粒可以具有尺寸和/或形状，使得颗粒在井下温度下可变形。颗粒中的聚乙酸乙烯酯可以是颗粒基质的一部分，颗粒上的涂层和/或整个颗粒可以是聚乙酸乙烯酯。聚乙酸乙烯酯可以包括在水力压裂液的任何部分中，或仅包含不支撑剂的部分水力压裂液。

2. 发明申请

US20100181065A1 Fluid Loss Additive and Breaking Agent 有权
标题翻译：流体损失添加剂和破乳剂
公开(公告)号：US20100181065A1
公开(公告)日：2010-07-22
申请号：US12356276
申请日：2009-01-20
申请人： Hemant K. Ladva , Syed Ali , Mohan K.R. Panga , Richard D. Hutchins , Don Williamson
发明人： Hemant K. Ladva , Syed Ali , Mohan K.R. Panga , Richard D. Hutchins , Don Williamson
IPC分类号： E21B43/26 , E21B33/00 , E21B36/00 , E21B43/267 , C09K8/66 , E21B47/06 , E21B47/00
CPC分类号： C09K8/68 , C09K8/70 , C09K8/88
摘要： A system includes a hydraulic fracturing fluid including a polymeric constituent and an additive having particles including poly-vinyl acetate in an amount sufficient to control fluid loss. The system includes a formation of interest having a downhole temperature, and the particles including poly-vinyl acetate have a size and/or shape such that the poly-vinyl acetate hydrolyses at the downhole temperature. The particles may have a size and/or shape such that the particles are deformable at the downhole temperature. The poly-vinyl acetate in the particles may be a part of the particle substrate, a coating on the particles, and/or the entire particle may be poly-vinyl acetate. The poly-vinyl acetate may be included in any portion of the hydraulic fracturing fluid, or only the portion of the hydraulic fracturing fluid that is not proppant laden.
摘要翻译：一种系统包括水力压裂流体，其包括聚合物成分和具有足以控制流体损失的量的包含聚乙酸乙烯酯的颗粒的添加剂。该系统包括具有井下温度的感兴趣的形成，并且包括聚乙酸乙烯酯的颗粒具有尺寸和/或形状，使得聚乙酸乙烯酯在井下温度下水解。颗粒可以具有尺寸和/或形状，使得颗粒在井下温度下可变形。颗粒中的聚乙酸乙烯酯可以是颗粒基质的一部分，颗粒上的涂层和/或整个颗粒可以是聚乙酸乙烯酯。聚乙酸乙烯酯可以包括在水力压裂液的任何部分中，或仅包含不支撑剂的部分水力压裂液。

3. 发明申请

US20080289828A1 Methods of Limiting Leak Off and Damage In Hydraulic Fractures 有权
标题翻译：限制泄漏和水力破裂损伤的方法
公开(公告)号：US20080289828A1
公开(公告)日：2008-11-27
申请号：US12139226
申请日：2008-06-13
申请人： Richard D. Hutchins , Hemant K. Ladva , Don Williamson , Sylvie Daniel
发明人： Richard D. Hutchins , Hemant K. Ladva , Don Williamson , Sylvie Daniel
IPC分类号： E21B43/267
CPC分类号： C09K8/68 , C09K8/685 , C09K8/88 , C09K2208/26 , C09K2208/30
摘要： Methods for treating a formation penetrated by a wellbore which improves fluid loss control during treatment. In some aspects, the treatments include preparing an aqueous fluid including one or more water inert degradable polymers and an optional viscosifier, injecting the aqueous fluid into the wellbore at a pressure equal to or greater than the formation's fracture initiation pressure, and thereafter injecting into the wellbore a proppant laden fluid at a pressure equal to or greater than the formation's fracture initiation pressure. The water inert degradable polymer may be a polymer such as an emulsion polymer or a latex polymer. Some methods of the invention use a fluid which may have a normalized leak off coefficient (Cw/sqrt(K)) equal to or less than about 0.0022, 0.0014, or 0.0010. A conventional fluid loss additive may or may not be used in conjunction with the treatment fluid and/or the proppant laden fluid. The water inert degradable polymer may or may not substantially enter formation pores. In another aspect, methods for reducing matrix damage to a formation during a treatment operation include preparing an aqueous treatment fluid formed of at least one water inert degradable polymer, and injecting the fluid at a pressure equal or greater than the formation's fracture initiation pressure.
摘要翻译：用于处理由井眼穿透的地层的方法，其改善处理期间的流体损失控制。在一些方面，处理包括制备包含一种或多种水惰性可降解聚合物和任选的增粘剂的含水流体，其在等于或大于地层断裂开始压力的压力下将水性流体注入井眼，然后注入在等于或大于地层断裂开始压力的压力下钻井支撑剂载液。水惰性可降解聚合物可以是聚合物，例如乳液聚合物或胶乳聚合物。本发明的一些方法使用可具有等于或小于约0.0022,0.0014或0.0010的归一化泄漏系数（Cw / sqrt（K））的流体。常规的流体损失添加剂可以或可以不与处理流体和/或负载载体一起使用。水惰性可降解聚合物可能基本上不会进入地层孔隙。在另一方面，用于在处理操作期间减少对地层的基质损伤的方法包括制备由至少一种水惰性可降解聚合物形成的水性处理流体，并且在等于或大于地层断裂开始压力的压力下注入流体。

4. 发明授权

US07779915B2 Methods of limiting leak off and damage in hydraulic fractures 有权
$Methods of limiting leak off and damage in hydraulic fractures$
标题翻译：限制水力裂缝泄漏和破坏的方法
公开(公告)号：US07779915B2
公开(公告)日：2010-08-24
申请号：US12139226
申请日：2008-06-13
申请人： Richard D. Hutchins , Hemant K. Ladva , Don Williamson , Sylvie Daniel
发明人： Richard D. Hutchins , Hemant K. Ladva , Don Williamson , Sylvie Daniel
IPC分类号： E21B43/267
CPC分类号： C09K8/68 , C09K8/685 , C09K8/88 , C09K2208/26 , C09K2208/30
摘要： Methods for treating a formation penetrated by a wellbore which improves fluid loss control during treatment. In some aspects, the treatments include preparing an aqueous fluid including one or more water inert degradable polymers and an optional viscosifier, injecting the aqueous fluid into the wellbore at a pressure equal to or greater than the formation's fracture initiation pressure, and thereafter injecting into the wellbore a proppant laden fluid at a pressure equal to or greater than the formation's fracture initiation pressure. The water inert degradable polymer may be a polymer such as an emulsion polymer or a latex polymer. Some methods of the invention use a fluid which may have a normalized leak off coefficient (Cw/sqrt(K)) equal to or less than about 0.0022, 0.0014, or 0.0010. A conventional fluid loss additive may or may not be used in conjunction with the treatment fluid and/or the proppant laden fluid. The water inert degradable polymer may or may not substantially enter formation pores. In another aspect, methods for reducing matrix damage to a formation during a treatment operation include preparing an aqueous treatment fluid formed of at least one water inert degradable polymer, and injecting the fluid at a pressure equal or greater than the formation's fracture initiation pressure.
摘要翻译：用于处理由井眼穿透的地层的方法，其改善处理期间的流体损失控制。在一些方面，处理包括制备包含一种或多种水惰性可降解聚合物和任选的增粘剂的含水流体，其在等于或大于地层断裂开始压力的压力下将水性流体注入井眼，然后注入在等于或大于地层断裂开始压力的压力下钻井支撑剂载液。水惰性可降解聚合物可以是聚合物，例如乳液聚合物或胶乳聚合物。本发明的一些方法使用可具有等于或小于约0.0022,0.0014或0.0010的归一化泄漏系数（Cw / sqrt（K））的流体。常规的流体损失添加剂可以或可以不与处理流体和/或负载载体一起使用。水惰性可降解聚合物可能基本上不会进入地层孔隙。在另一方面，用于在处理操作期间减少对地层的基质损伤的方法包括制备由至少一种水惰性可降解聚合物形成的水性处理流体，并且在等于或大于地层断裂开始压力的压力下注入流体。

5. 发明申请

US20110036582A1 Solid incorporated reversible emulsion for a fracturing fluid 审中-公开
$Solid incorporated reversible emulsion for a fracturing fluid$
标题翻译：用于压裂液的固体合并可逆乳液
公开(公告)号：US20110036582A1
公开(公告)日：2011-02-17
申请号：US12583134
申请日：2009-08-14
申请人： Hemant K. Ladva , Syed Ali , Don Williamson , Mathew M. Samuel
发明人： Hemant K. Ladva , Syed Ali , Don Williamson , Mathew M. Samuel
IPC分类号： E21B43/26
CPC分类号： C09K8/64 , C09K8/536 , C09K8/76 , C09K8/92
摘要： Embodiments of this invention relate to an apparatus and a method for treating a subterranean formation permeated by a wellbore including forming a fluid comprising a reverse emulsion and a degradable material, introducing the fluid into a wellbore, and allowing the degradable material to degrade. Embodiments of this invention relate to an apparatus and a method for treating a subterranean formation permeated by a wellbore including forming a fluid comprising a reverse emulsion and a fluid loss additive, introducing the fluid into a wellbore, and allowing the fluid loss additive to degrade.
摘要翻译：本发明的实施例涉及一种用于处理由井眼渗透的地下地层的装置和方法，包括形成包含反向乳液和可降解材料的流体，将流体引入井筒，并使可降解材料降解。本发明的实施例涉及一种用于处理由井筒渗透的地下地层的装置和方法，包括形成包括反向乳液和流体损失添加剂的流体，将流体引入井眼，并允许流体损失添加剂降解。

6. 发明申请

US20090205824A1 Polymeric Microspheres As Degradable Fluid Loss Additives In Oilfield Applications 失效
标题翻译：聚合物微球作为油田应用中可降解的流体损失添加剂
公开(公告)号：US20090205824A1
公开(公告)日：2009-08-20
申请号：US12353810
申请日：2009-01-14
申请人： Philip F. Sullivan , Gary John Tustin , Don Williamson , Hemant K. Ladva
发明人： Philip F. Sullivan , Gary John Tustin , Don Williamson , Hemant K. Ladva
IPC分类号： E21B43/02 , E21B33/13 , C09K8/68 , C09K8/60
CPC分类号： C09K8/512 , C09K8/516 , C09K8/685 , C09K8/887
摘要： Methods and apparatus for forming a fluid for use within in a subterranean formation including crosslinking a polymer along the surface of microspheres in a water-in-water emulsion and introducing the microspheres into the subterranean formation. Methods and apparatus for forming a fluid for use within in a subterranean formation including crosslinking a polymer along the surface of microspheres in a water in water emulsion, isolating the microspheres from the emulsion, and introducing the microspheres into the subterranean formation. Methods and apparatus for forming a fluid to treat a subterranean formation including introducing a crosslinkable polymer, partitioning agent, and crosslinker into a solvent, crosslinking the crosslinkable polymer, isolating beads of the crosslinkable polymer from the partitioning agent, introducing the beads into a fluid for treating a subterranean formation.
摘要翻译：用于形成在地下地层内使用的流体的方法和装置，包括在水包油乳液中沿着微球表面交联聚合物，并将微球引入地下地层。用于形成在地层内使用的流体的方法和装置，包括在水包油乳液中沿着微球表面交联聚合物，从微乳液中分离出微球体，并将微球引入到地层中。用于形成处理地下地层的流体的方法和装置，包括将可交联聚合物，分配剂和交联剂引入溶剂中，交联可交联聚合物，将可交联聚合物的珠子与分配剂隔离，将珠子引入流体中处理地层。

7. 发明授权

US07703521B2 Polymeric microspheres as degradable fluid loss additives in oilfield applications 失效
标题翻译：聚合微球作为油田应用中的可降解流体损失添加剂
公开(公告)号：US07703521B2
公开(公告)日：2010-04-27
申请号：US12353810
申请日：2009-01-14
申请人： Philip F. Sullivan , Gary John Tustin , Don Williamson , Hemant K. Ladva
发明人： Philip F. Sullivan , Gary John Tustin , Don Williamson , Hemant K. Ladva
IPC分类号： E21B33/13 , E21B43/267
CPC分类号： C09K8/512 , C09K8/516 , C09K8/685 , C09K8/887
摘要： Methods and apparatus for forming a fluid for use within in a subterranean formation including crosslinking a polymer along the surface of microspheres in a water-in-water emulsion and introducing the microspheres into the subterranean formation. Methods and apparatus for forming a fluid for use within in a subterranean formation including crosslinking a polymer along the surface of microspheres in a water in water emulsion, isolating the microspheres from the emulsion, and introducing the microspheres into the subterranean formation. Methods and apparatus for forming a fluid to treat a subterranean formation including introducing a crosslinkable polymer, partitioning agent, and crosslinker into a solvent, crosslinking the crosslinkable polymer, isolating beads of the crosslinkable polymer from the partitioning agent, introducing the beads into a fluid for treating a subterranean formation.
摘要翻译：用于形成在地下地层内使用的流体的方法和装置，包括在水包油乳液中沿着微球表面交联聚合物，并将微球引入地下地层。用于形成在地层内使用的流体的方法和装置，包括在水包油乳液中沿着微球表面交联聚合物，从微乳液中分离出微球体，并将微球引入到地层中。用于形成用于处理地下地层的流体的方法和装置，包括将可交联聚合物，分配剂和交联剂引入溶剂中，交联可交联聚合物，将可交联聚合物的珠子与分配剂隔离，将珠粒引入用于处理地层。

8. 发明申请

US20110028357A1 SYSTEM, METHOD AND APPARATUS FOR ENHANCING WELLBORE TREATMENT FLUID FLEXIBILITY 有权
标题翻译：用于增强井筒处理流体柔性的系统，方法和装置
公开(公告)号：US20110028357A1
公开(公告)日：2011-02-03
申请号：US12511182
申请日：2009-07-29
申请人： Carlos Abad , Hemant K. Ladva , Lijun Lin , Yiyan Chen
发明人： Carlos Abad , Hemant K. Ladva , Lijun Lin , Yiyan Chen
IPC分类号： F15C1/00 , C09K8/60
CPC分类号： E21B43/24 , C09K8/03 , E21B21/06 , Y10S507/904 , Y10T137/85978
摘要： A method includes performing a chemical process to create a chemical product and an amount of heat, and transferring the heat to a first fluid. The method further includes hydrating a polymer in the first fluid, and adding the chemical product from the chemical process to the first fluid to create a treatment fluid. The method further includes diluting the treatment fluid with respect to at least one constituent of the treatment fluid. The method includes treating a formation of interest in a wellbore with the treatment fluid. The method includes changing a formulation of the treatment fluid during the treating. The method also includes extending the treating beyond a design amount, or ending the treatment before the design amount and preserving some reagents of the chemical process.
摘要翻译：一种方法包括执行化学过程以产生化学产品和一定量的热量，并将热量传递给第一流体。该方法还包括将第一流体中的聚合物水合，并将化学产物从化学过程加入到第一流体中以产生处理流体。该方法还包括相对于处理流体的至少一种成分稀释处理流体。该方法包括用处理流体处理在井眼中的感兴趣的形成。该方法包括在处理期间改变处理液的配方。该方法还包括将处理延伸超过设计量，或在设计量之前结束处理并保留化学过程的一些试剂。

9. 发明申请

US20120145376A1 System, Method And Apparatus For Enhancing Wellbore Treatment Fluid Flexibility 失效
公开(公告)号：US20120145376A1
公开(公告)日：2012-06-14
申请号：US13398094
申请日：2012-02-16
申请人： Carlos Abad , Hemant K. Ladva , Lijun Lin , Yiyan Chen
发明人： Carlos Abad , Hemant K. Ladva , Lijun Lin , Yiyan Chen
IPC分类号： E21B43/12
CPC分类号： E21B43/24 , C09K8/03 , E21B21/06 , Y10S507/904 , Y10T137/85978
摘要： A method includes performing a chemical process to create a chemical product and an amount of heat, and transferring the heat to a first fluid. The method further includes hydrating a polymer in the first fluid, and adding the chemical product from the chemical process to the first fluid to create a treatment fluid. The method further includes diluting the treatment fluid with respect to at least one constituent of the treatment fluid. The method includes treating a formation of interest in a wellbore with the treatment fluid. The method includes changing a formulation of the treatment fluid during the treating. The method also includes extending the treating beyond a design amount, or ending the treatment before the design amount and preserving some reagents of the chemical process.

10. 发明申请

US20120149606A1 System, Method And Apparatus For Enhancing Wellbore Treatment Fluid Flexibility 失效
标题翻译：用于提高井筒处理流体灵活性的系统，方法和装置
公开(公告)号：US20120149606A1
公开(公告)日：2012-06-14
申请号：US13398120
申请日：2012-02-16
申请人： Carlos Abad , Hemant K. Ladva , Lijun Lin , Yiyan Chen
发明人： Carlos Abad , Hemant K. Ladva , Lijun Lin , Yiyan Chen
IPC分类号： C09K8/00
CPC分类号： E21B43/24 , C09K8/03 , E21B21/06 , Y10S507/904 , Y10T137/85978
摘要： A method includes performing a chemical process to create a chemical product and an amount of heat, and transferring the heat to a first fluid. The method further includes hydrating a polymer in the first fluid, and adding the chemical product from the chemical process to the first fluid to create a treatment fluid. The method further includes diluting the treatment fluid with respect to at least one constituent of the treatment fluid. The method includes treating a formation of interest in a wellbore with the treatment fluid. The method includes changing a formulation of the treatment fluid during the treating. The method also includes extending the treating beyond a design amount, or ending the treatment before the design amount and preserving some reagents of the chemical process.
摘要翻译：一种方法包括执行化学过程以产生化学产品和一定量的热量，并将热量传递给第一流体。该方法还包括将第一流体中的聚合物水合，并将化学产物从化学过程加入到第一流体中以产生处理流体。该方法还包括相对于处理流体的至少一种成分稀释处理流体。该方法包括用处理流体处理在井眼中的感兴趣的形成。该方法包括在处理期间改变处理液的配方。该方法还包括将处理延伸超过设计量，或在设计量之前结束处理并保留化学过程的一些试剂。

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