公开(公告)号：US08093187B2

公开(公告)日：2012-01-10

申请号：US12015710

申请日：2008-01-17

申请人： Yiyan Chen ,  Jesse C. Lee

发明人： Yiyan Chen ,  Jesse C. Lee

IPC分类号： C09K8/588

CPC分类号： C09K8/68 ,  B01F17/0042 ,  B01F17/005 ,  B01J13/0073 ,  C09K8/74 ,  C09K2208/30

摘要： Composition and method for shortening the shear recovery time of cationic, zwitterionic, and amphoteric viscoelastic surfactant fluid systems by adding an effective amount of a co-gelling agent selected from triblock oligomeric compounds having hydrophilic (for example polyether) and hydrophobic (for example alkyl) portions. The co-gelling agent also increases fluid viscosity and very low co-gelling agent concentration is needed. Preferred surfactants are betaines and quaternary amines. The fluids are useful in oilfield treatments, for example fracturing and gravel packing.

摘要翻译： 通过添加有效量的选自具有亲水性（例如聚醚）和疏水（例如烷基）的三嵌段低聚化合物的共胶凝剂，缩短阳离子，两性离子和两性粘弹性表面活性剂流体体系的剪切恢复时间的组合物和方法， 部分。 共胶凝剂还增加流体粘度，并且需要非常低的共胶凝剂浓度。 优选的表面活性剂是甜菜碱和季胺。 这些流体可用于油田处理，例如压裂和砾石填充。

公开(公告)号：US07803744B2

公开(公告)日：2010-09-28

申请号：US11858246

申请日：2007-09-20

申请人： Yiyan Chen ,  Jesse Lee ,  Timothy L. Pope

发明人： Yiyan Chen ,  Jesse Lee ,  Timothy L. Pope

IPC分类号： C09K8/518 ,  C09K8/60

CPC分类号： C09K8/706 ,  B01F17/0085 ,  C09K8/516 ,  C09K8/703 ,  C09K8/74 ,  C09K2208/30 ,  Y10S507/904

摘要： An aqueous viscoelastic surfactant (VES) fluid foamed or energized with carbon dioxide, in which the VES is more compatible with the carbon dioxide, is made by the addition of one or more than one synergistic co-surfactant. The synergist co-surfactant includes quaternary amines and ethoxylated carboxylates having a hydrophobic chain shorter than the hydrophobic chain of the VES. Improved compatibility is evidenced for a given surfactant concentration either by formation and maintenance of a foam under conditions at which the foam could not otherwise have been formed or maintained, or by either higher viscosity of the foamed fluid at a given temperature or longer foam life at a given temperature or a higher temperature at which useful fluid viscosity can be generated or maintained for a useful time. The aqueous carbon dioxide foamed fluids may be used in acidizing, acid fracturing, gravel packing, diversion, and well cleanout.

摘要翻译： 通过添加一种或多种协同辅助表面活性剂，可以制备VES与二氧化碳更相容的二氧化碳发泡或赋能的含水粘弹性表面活性剂（VES）流体。 增效剂助表面活性剂包括具有比VES的疏水链短的疏水链的季胺和乙氧基化羧酸盐。 对于给定的表面活性剂浓度，通过在泡沫不能形成或保持的条件下形成和维持泡沫，或通过在给定温度下较高粘度的发泡流体或更长的泡沫寿命来证明给定的表面活性剂浓度的改进的相容性 给定的温度或更高的温度，在该温度下可以产生或维持有用的时间。 二氧化碳水溶液发泡流体可用于酸化，酸压裂，砾石填充，分流和清洁。

公开(公告)号：US07749944B2

公开(公告)日：2010-07-06

申请号：US12368749

申请日：2009-02-10

申请人： Yiyan Chen ,  Jesse C. Lee ,  Eric Hanson

发明人： Yiyan Chen ,  Jesse C. Lee ,  Eric Hanson

IPC分类号： C09K8/60 ,  C09K8/62 ,  E21B43/26

CPC分类号： C09K8/68 ,  C09K8/602 ,  C09K8/88 ,  C09K2208/30

摘要： Methods of improving shear recovery time of viscoelastic surfactant fluid systems are described, one method involving providing a viscoelastic surfactant fluid system comprising a major portion of a surfactant and a rheology enhancer in a concentration sufficient to shorten shear recovery time of the fluid system compared to shear recovery time of the fluid system absent the rheology enhancer, the rheology enhancer selected from aromatic sulfonates having a molecular weight of at least 500; and injecting the fluid system down a well. The rheology enhancer may be a lignosulfonate derived from wood pulping. Viscoelastic surfactant systems including the rheology enhancer are also described.

摘要翻译： 描述了提高粘弹性表面活性剂流体体系的剪切恢复时间的方法，一种方法包括提供包含主要部分表面活性剂和流变增强剂的粘弹性表面活性剂流体体系，其浓度足以缩短与剪切相比的流体系统的剪切恢复时间 不含流变增强剂的流体体系的回收时间，流变增强剂选自分子量至少为500的芳族磺酸盐; 并将流体系统向下注入井中。 流变增强剂可以是衍生自木材制浆的木质素磺酸盐。 还描述了包括流变增强剂的粘弹性表面活性剂体系。

公开(公告)号：US07387987B2

公开(公告)日：2008-06-17

申请号：US11279612

申请日：2006-04-13

申请人： Yiyan Chen ,  Jesse C. Lee ,  Mathew Samuel

发明人： Yiyan Chen ,  Jesse C. Lee ,  Mathew Samuel

IPC分类号： C09K8/584 ,  C09K8/588 ,  E21B21/00

CPC分类号： C09K8/68 ,  C09K2208/30

摘要： A method for increasing the rate of shear rehealing of fluids made with cationic, zwitterionic, and amphoteric viscoelastic surfactant fluid systems by adding an effective amount of a polymeric rheology enhancer selected from polypropylene glycols and block copolymers of polypropylene glycol and polyethylene glycol. For applications in which rapid shear rehealing is required, the rheology enhancer allows fluids to be made and used at lower viscoelastic surfactant concentrations. Preferred surfactants are betaines and quaternary amines. The fluids are useful in oilfield treatments, for example fracturing and gravel packing.

摘要翻译： 通过加入有效量的选自聚丙二醇和聚丙二醇和聚乙二醇的嵌段共聚物的聚合物流变增强剂，提高用阳离子，两性离子和两性粘弹性表面活性剂流体体系制备的流体的剪切再吸收速率的方法。 对于需要快速剪切回流的应用，流变增强剂允许在较低的粘弹性表面活性剂浓度下制备和使用流体。 优选的表面活性剂是甜菜碱和季胺。 这些流体可用于油田处理，例如压裂和砾石填充。

公开(公告)号：US20080139410A1

公开(公告)日：2008-06-12

申请号：US11608085

申请日：2006-12-07

申请人： Yiyan Chen ,  Jesse C. Lee ,  Eric Hanson

发明人： Yiyan Chen ,  Jesse C. Lee ,  Eric Hanson

IPC分类号： C09K8/60

CPC分类号： C09K8/68 ,  C09K8/602 ,  C09K8/88 ,  C09K2208/30

摘要： Methods of improving shear recovery time of viscoelastic surfactant fluid systems are described, one method involving providing a viscoelastic surfactant fluid system comprising a major portion of a surfactant and a rheology enhancer in a concentration sufficient to shorten shear recovery time of the fluid system compared to shear recovery time of the fluid system absent the rheology enhancer, the rheology enhancer selected from aromatic sulfonates having a molecular weight of at least 500; and injecting the fluid system down a well. The rheology enhancer may be a lignosulfonate derived from wood pulping. Viscoelastic surfactant systems including the rheology enhancer are also described.

摘要翻译： 描述了提高粘弹性表面活性剂流体体系的剪切恢复时间的方法，一种方法包括提供包含主要部分表面活性剂和流变增强剂的粘弹性表面活性剂流体体系，其浓度足以缩短与剪切相比的流体系统的剪切恢复时间 不含流变增强剂的流体体系的回收时间，流变增强剂选自分子量至少为500的芳族磺酸盐; 并将流体系统向下注入井中。 流变增强剂可以是衍生自木材制浆的木质素磺酸盐。 还描述了包括流变增强剂的粘弹性表面活性剂体系。

公开(公告)号：US20080093073A1

公开(公告)日：2008-04-24

申请号：US11872973

申请日：2007-10-16

申请人： Oscar Bustos ,  Christopher Fredd ,  Yiyan Chen ,  Carlos Abad ,  Goke Adeogun

发明人： Oscar Bustos ,  Christopher Fredd ,  Yiyan Chen ,  Carlos Abad ,  Goke Adeogun

IPC分类号： C09K8/00 ,  C09K8/60

CPC分类号： E21B43/267 ,  C09K8/68 ,  C09K8/74 ,  C09K8/80 ,  C09K8/88 ,  C09K2208/30

摘要： Degradable material assisted diversion (DMAD) methods for well treatment, DMAD treatment fluids, and removable plugs for DMAD in downhole operations. A slurry of solid degradable material is injected into the well, a plug of the degradable material is formed, a downhole operation is performed around the plug diverter, and the plug is then degraded for removal. Degradation triggers can be temperature or chemical reactants, with optional accelerators or retarders to provide the desired timing for plug removal. In multilayer formation DMAD fracturing, the plug isolates a completed fracture while additional layers are sequentially fractured and plugged, and then the plugs are removed for flowback from the fractured layers. In DMAD fluids, an aqueous slurry can have a solids phase including a degradable material and a fluid phase including a viscoelastic surfactant. The solids phase can be a mixture of fibers and a particulate material.

摘要翻译： 用于井下处理的可降解材料辅助转移（DMAD）方法，DMAD处理流体和用于DMAD的可拆卸插头。 将固体可降解材料的浆料注入井中，形成可降解材料的塞子，在塞子转向器周围进行井下操作，然后将塞子降解以除去。 降解触发器可以是温度或化学反应物，可选择的加速器或缓凝剂可提供插头去除所需的时间。 在多层形成DMAD压裂中，塞子将完成的裂缝隔离，而另外的层被依次断裂和堵塞，然后将塞子从裂缝层中回流回去。 在DMAD流体中，含水浆料可以具有包含可降解材料的固体相和包含粘弹性表面活性剂的流体相。 固相可以是纤维和颗粒材料的混合物。

公开(公告)号：US20050028978A1

公开(公告)日：2005-02-10

申请号：US10644429

申请日：2003-08-20

申请人： Mehmet Parlar ,  Liz Morris ,  Yiyan Chen ,  Paul Price

发明人： Mehmet Parlar ,  Liz Morris ,  Yiyan Chen ,  Paul Price

IPC分类号： C09K8/36 ,  E21B43/04

CPC分类号： C09K8/36 ,  C09K2208/30 ,  E21B43/04

摘要： A method is disclosed for using aqueous VES-based gravel carrier fluids in gravel packing operations using screens and shunt tubes that have been run into a well completed with an oil-based mud. With this method, the previously necessary but undesirable steps of first running in a perforated liner and then displacing the oil-based mud with an aqueous-based fluid in the region to be gravel packed are both avoided while the advantages of gravel packing with an aqueous-based fluid are retained.

摘要翻译： 公开了一种在使用已经用油基泥浆完成的筛网和分流管的砾石包装操作中使用水性VES基砾石载体流体的方法。 使用这种方法，首先在穿孔衬里中运行，然后在要砾石填充的区域中用含水基流体移动油基泥浆的先前必要但不期望的步骤都是避免的，而具有水性的砾石填充的优点 的流体被保留。