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公开(公告)号：US20080289828A1
公开(公告)日：2008-11-27
申请号：US12139226
申请日：2008-06-13
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。
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公开(公告)号：US07779915B2
公开(公告)日：2010-08-24
申请号：US12139226
申请日：2008-06-13
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。
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公开(公告)号：US07971644B2
公开(公告)日：2011-07-05
申请号：US12356276
申请日：2009-01-20
IPC分类号： E21B43/267
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。
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公开(公告)号：US20100181065A1
公开(公告)日：2010-07-22
申请号：US12356276
申请日：2009-01-20
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。
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5.发明申请Polymeric Microspheres As Degradable Fluid Loss Additives In Oilfield Applications 失效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
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。
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6.发明授权Polymeric microspheres as degradable fluid loss additives in oilfield applications 失效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
IPC分类号： E21B33/13 , E21B43/267
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。
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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
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。
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公开(公告)号：US20130277047A1
公开(公告)日：2013-10-24
申请号：US13823181
申请日：2011-09-15
申请人： Yan P. Kuhn de Chizelle , Mathew M. Samuel , Douglas Pipchuk , Don Williamson , Andrey Mirakyan , Hemant K.J. Ladva , Richard D. Hutchins
发明人： Yan P. Kuhn de Chizelle , Mathew M. Samuel , Douglas Pipchuk , Don Williamson , Andrey Mirakyan , Hemant K.J. Ladva , Richard D. Hutchins
IPC分类号： E21B17/20
CPC分类号： E21B17/203
摘要： A technique utilizes micro-tubing to facilitate performance of a well treatment in which the micro-tubing is deployed for cooperation with a larger tubing, such as a coiled tubing positioned in wellbore. The micro-tubing is used to deliver a separated chemical downhole to modify a property of a treatment fluid used in performing a desired well treatment operation at a desired treatment region along the wellbore. A variety of additional components may be combined with the micro-tubing to further facilitate the treatment application.
摘要翻译： 一种技术利用微管来促进井处理的性能，其中微管被部署用于与更大的管道（例如定位在井眼中的连续油管）配合。 微管用于在井下沿着井眼的期望的处理区域输送分离的化学物质以改善在执行期望的井处理操作中使用的处理流体的性质。 各种附加组分可以与微管组合以进一步促进治疗应用。
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公开(公告)号：US20090221453A1
公开(公告)日：2009-09-03
申请号：US12363917
申请日：2009-02-02
CPC分类号： C09K8/90 , C09K8/68 , C09K8/685 , C09K8/887 , C09K2208/26
摘要： A treatment fluid composition for treating a subterranean formation is formed from an aqueous fluid, a hydratable polymer and a polymer breaking system. The polymer breaking system includes an oxidizing breaking agent and an activator capable of providing a bisulfite ion source. A method of treating a subterranean formation may also be performed by forming a treatment fluid comprising an aqueous hydrated polymer solution and a polymer breaking system. The polymer breaking system includes a breaking agent of an oxidizer and an activator capable of providing a bisulfite ion source. The treatment fluid is introduced into the formation.
摘要翻译： 用于处理地层的处理流体组合物由水性流体，可水合聚合物和聚合物破碎体系形成。 聚合物断裂系统包括氧化破坏剂和能够提供亚硫酸氢盐离子源的活化剂。 处理地下地层的方法也可以通过形成包含水合聚合物水溶液和聚合物破碎体系的处理流体来进行。 聚合物断裂系统包括氧化剂的破坏剂和能够提供亚硫酸氢盐离子源的活化剂。 处理液被引入地层。
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公开(公告)号：US09371479B2
公开(公告)日：2016-06-21
申请号：US13421076
申请日：2012-03-15
IPC分类号： E21B43/267 , C09K8/68 , C09K8/60 , C09K8/92
CPC分类号： C09K8/605 , C09K8/68 , C09K8/92 , C09K2208/30 , E21B43/267
摘要： A method for treating a subterranean formation penetrated by a wellbore, the method including the introduction of a well treatment fluid containing at least an encapsulated biocide. Once the encapsulated biocide is introduced and after a predetermined period of time, a biocide is released from an encapsulation material and treats the wellbore and the subterranean formation.
摘要翻译： 一种用于处理由井筒渗透的地层的方法，所述方法包括引入至少含有包封的杀生物剂的井处理流体。 一旦引入了包封的杀生物剂，并且在预定时间段之后，将杀生物剂从包封材料中释放出来，并对井筒和地层进行处理。
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