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1. 发明授权

US06881709B2 Viscosity reduction of viscoelastic surfactant based fluids 有权
公开(公告)号：US06881709B2
公开(公告)日：2005-04-19
申请号：US09826127
申请日：2001-04-04
申请人： Erik B. Nelson , Bernhard Lungwitz , Keith Dismuke , Mathew Samuel , Golchi Salamat , Trevor Hughes , Jesse Lee , Philip Fletcher , Diankui Fu , Richard Hutchins , Michael Parris , Gary John Tustin
发明人： Erik B. Nelson , Bernhard Lungwitz , Keith Dismuke , Mathew Samuel , Golchi Salamat , Trevor Hughes , Jesse Lee , Philip Fletcher , Diankui Fu , Richard Hutchins , Michael Parris , Gary John Tustin
IPC分类号： C09K8/536 , C09K8/62 , C09K8/72 , C09K8/74 , C09K8/92 , E21B43/26 , C09K3/00
CPC分类号： C09K8/92 , C09K8/536 , C09K8/62 , C09K8/72 , C09K8/74 , C09K2208/26 , Y10S507/921 , Y10S507/922
摘要： Methods and compositions are disclosed for controlled addition of components that decrease the viscosity of the viscoelastic surfactant fluids or for controlled changes in the electrolyte concentration or composition of the viscoelastic surfactant fluids. One aspect of the invention relates to the use of internal breakers with a delayed activation. Another aspect of the invention relates to the use of precursors that release a breaking system such as alcohol by a process such as melting, slow dissolution, reaction with a compound present in the fluid or added to the fluid during or after the step of injecting, rupture of an encapsulating coating and de-adsorption of a breaking agent absorbed into solid particles. In another aspect of the invention, alcohols are included in a pad to reduce the low-shear viscosity and reduce the resistance to flow of the treatment fluids during a desired phase of the treatment.

2. 发明授权

US08695708B2 Method for treating subterranean formation with degradable material 有权
标题翻译：用可降解材料处理地层的方法
公开(公告)号：US08695708B2
公开(公告)日：2014-04-15
申请号：US12873435
申请日：2010-09-01
申请人： Andrey Fedorov , Olesya Levanyuk , Tatiana Zolnikova , Vadim Khlestkin , Alexander Nadeev , Diankui Fu , Bruno Lecerf , Shiyi Wang , Gary John Tustin , Valerie Lafitte
发明人： Andrey Fedorov , Olesya Levanyuk , Tatiana Zolnikova , Vadim Khlestkin , Alexander Nadeev , Diankui Fu , Bruno Lecerf , Shiyi Wang , Gary John Tustin , Valerie Lafitte
IPC分类号： E21B43/26 , E21B43/27
CPC分类号： C09K8/68 , C09K8/703 , C09K2208/08 , C09K2208/30 , E21B43/26
摘要： A method for treating a subterranean formation penetrated by a wellbore is provided. The method includes providing a treatment fluid containing a viscoelastic surfactant having at least one degradable linkage, a hydrolysable material, and a pH control material, and injecting the treatment fluid into a subterranean formation. The pH control material may have a pH equal or greater than about 9 and may include a strongly alkaline material and an oxidizing agent.
摘要翻译：提供了一种用于处理由井眼穿透的地层的方法。该方法包括提供含有具有至少一种可降解键的粘弹性表面活性剂的处理流体，可水解材料和pH控制材料，并将处理流体注入到地层中。 pH控制材料可以具有等于或大于约9的pH，并且可以包括强碱性材料和氧化剂。

3. 发明申请

US20140090895A1 COMPOSITIONS AND METHODS FOR REDUCING FLUID LOSS 有权
标题翻译：用于减少流体损失的组合物和方法
公开(公告)号：US20140090895A1
公开(公告)日：2014-04-03
申请号：US13630781
申请日：2012-09-28
申请人： Fatma Daou , Bernhard Lungwitz , Olga Alexandrovna Minikh , Diankui Fu
发明人： Fatma Daou , Bernhard Lungwitz , Olga Alexandrovna Minikh , Diankui Fu
IPC分类号： E21B33/138
CPC分类号： E21B33/138 , C09K8/035 , C09K8/50 , E21B21/003
摘要： The current application discloses compositions and methods for reducing fluid loss during subterranean operations. CO2 activated swellable elastomers can be used in subterranean operations to reduce fluid loss. In particular, the current application discloses compositions and methods for reducing lost circulation during drilling and drilling related subterranean operations.
摘要翻译：本申请公开了在地下操作期间减少流体损失的组合物和方法。 CO2活化的可膨胀弹性体可用于地下操作以减少流体损失。特别地，本申请公开了用于减少钻井和钻井相关地下操作期间的流失的组合物和方法。

4. 发明申请

US20140090844A1 SWELLABLE ELASTOMER AND ITS USE IN ACIDIZING OR MATRIX STIMULATION 有权
标题翻译：可溶性弹性体及其在酸化或基质刺激中的应用
公开(公告)号：US20140090844A1
公开(公告)日：2014-04-03
申请号：US13630744
申请日：2012-09-28
申请人： Fatma Daou , Bernhard Lungwitz , Olga Alexandrovna Minikh , Diankui Fu , Gregory Kubala
发明人： Fatma Daou , Bernhard Lungwitz , Olga Alexandrovna Minikh , Diankui Fu , Gregory Kubala
IPC分类号： E21B33/138 , E21B43/16 , E21B43/26
CPC分类号： E21B33/138 , C09K8/035 , C09K8/516 , C09K8/70 , C09K8/76 , C09K8/92 , E21B43/16 , E21B43/26
摘要： The current application discloses compositions and methods for treating a subterranean formation. CO2 swellable elastomers can be used in a treatment fluid to at least partially block a high permeability region, therefore improving the performance of an operation such as matrix stimulation, acidizing, and acid fracturing.
摘要翻译：本申请公开了用于处理地下地层的组合物和方法。二氧化碳可溶胀弹性体可以用于处理流体中以至少部分阻断高渗透性区域，从而改善诸如基质刺激，酸化和酸压裂的操作的性能。

5. 发明申请

US20060046937A1 Viscoelastic fluids containing nanotubes for oilfield uses 有权
标题翻译：含有用于油田用途的纳米管的粘弹性流体
公开(公告)号：US20060046937A1
公开(公告)日：2006-03-02
申请号：US10932958
申请日：2004-09-02
申请人： Diankui Fu , Keith Dismuke , Stephen Davies , Piyarat Wattana
发明人： Diankui Fu , Keith Dismuke , Stephen Davies , Piyarat Wattana
IPC分类号： C09K8/22 , C09K8/28
CPC分类号： C09K8/03 , B82Y30/00 , C09K8/52 , C09K8/602 , C09K8/68 , C09K8/74 , C09K2208/10 , C09K2208/30 , Y10S507/922 , Y10S507/926 , Y10S977/902
摘要： The present invention relates to viscoelastic fluids that contain nanotube structures that may be used advantageously as oilfield stimulation fluids in many different applications, most particularly as a fracturing fluid. Viscoelastic fluid compositions of the present invention include an aqueous medium, a viscoelastic surfactant, an organic or inorganic acids, or salt thereof, organic acid salts, inorganic salts, and a nanotube component. The invention is also called to a methods of treating a subterranean well bores in which the viscoelastic fluid is injected into the wellbore to perform operations such as fracturing, drilling, acid fracturing, gravel placement, removing scale, matrix acidizing, and removing mud cake. Further, a method of preparing a nanotube viscoelastic fluid comprising the steps of effectively mixing a carbon nanotube component into a viscoelastic fluid, and sonicating the mixture in order to incorporate the carbon nanotube component is claimed.
摘要翻译：本发明涉及含有纳米管结构的粘弹性流体，其可以有利地用于许多不同应用中的油田刺激流体，最特别地作为压裂液。本发明的粘弹性体组合物包括水性介质，粘弹性表面活性剂，有机酸或无机酸或其盐，有机酸盐，无机盐和纳米管组分。本发明还涉及一种处理地下井孔的方法，其中将粘弹性流体注入井眼中以进行诸如压裂，钻井，酸压裂，砾石放置，除垢，基质酸化和除去泥饼等操作。此外，要求保护纳米管粘弹性流体的方法，该方法包括以下步骤：将碳纳米管成分有效地混合到粘弹性流体中，并超声处理该混合物以引入碳纳米管成分。

6. 发明授权

US07244694B2 Viscoelastic fluids containing nanotubes for oilfield uses 有权
标题翻译：含有用于油田用途的纳米管的粘弹性流体
公开(公告)号：US07244694B2
公开(公告)日：2007-07-17
申请号：US10932958
申请日：2004-09-02
申请人： Diankui Fu , Keith Dismuke , Stephen Davies , Ann Wattana
发明人： Diankui Fu , Keith Dismuke , Stephen Davies , Ann Wattana
IPC分类号： C09K8/04 , C09K8/62
CPC分类号： C09K8/03 , B82Y30/00 , C09K8/52 , C09K8/602 , C09K8/68 , C09K8/74 , C09K2208/10 , C09K2208/30 , Y10S507/922 , Y10S507/926 , Y10S977/902
摘要： The present invention relates to viscoelastic fluids that contain nanotube structures that may be used advantageously as oilfield stimulation fluids in many different applications, most particularly as a fracturing fluid. Viscoelastic fluid compositions of the present invention include an aqueous medium, a viscoelastic surfactant, an organic or inorganic acids, or salt thereof, organic acid salts, inorganic salts, and a nanotube component. The invention is also called to a methods of treating a subterranean well bores in which the viscoelastic fluid is injected into the wellbore to perform operations such as fracturing, drilling, acid fracturing, gravel placement, removing scale, matrix acidizing, and removing mud cake. Further, a method of preparing a nanotube viscoelastic fluid comprising the steps of effectively mixing a carbon nanotube component into a viscoelastic fluid, and sonicating the mixture in order to incorporate the carbon nanotube component is claimed.
摘要翻译：本发明涉及含有纳米管结构的粘弹性流体，其可以有利地用于许多不同应用中的油田刺激流体，最特别地作为压裂液。本发明的粘弹性体组合物包括水性介质，粘弹性表面活性剂，有机酸或无机酸或其盐，有机酸盐，无机盐和纳米管组分。本发明还涉及一种处理地下井孔的方法，其中将粘弹性流体注入井眼中以进行诸如压裂，钻井，酸压裂，砾石放置，除垢，基质酸化和除去泥饼等操作。此外，要求保护纳米管粘弹性流体的方法，该方法包括以下步骤：将碳纳米管成分有效地混合到粘弹性流体中，并超声处理该混合物以引入碳纳米管成分。

7. 发明申请

US20070238622A1 Self-Cleaning Well Control Fluid 有权
标题翻译：自清洁井控流体
公开(公告)号：US20070238622A1
公开(公告)日：2007-10-11
申请号：US11278191
申请日：2006-03-31
申请人： Diankui Fu , Steve Russell , Mathew Samuel
发明人： Diankui Fu , Steve Russell , Mathew Samuel
IPC分类号： C09K8/00 , E21B43/00
CPC分类号： C09K8/74 , C09K2208/30
摘要： A composition and method is given for a well control fluid that is injected into a well during completion or remediation and prevents fluid flow from a formation into the well during operations (such as shut-in, or placement or adjustment of tools/hardware) when no fluid flow is desired. The composition includes a viscoelastic surfactant fluid system (VES) and a decomposable first solid material, preferably in fiber form, that forms a pack or plug in the well at the location where fluid would otherwise leak off, and then decomposes without intervention to release a product that is a breaker for the surfactant or the micelles of the VES. The composition optionally also contains a pH control agent and a second solid (that may also be a fluid loss agent) that affect the decomposition of the first solid.
摘要翻译：给出了一种组合物和方法，用于在完井或修复期间注入井中的井控流体，并且在操作期间（例如关闭，放置或调整工具/硬件），防止流体从地层流入井中不需要流体流动。组合物包括粘弹性表面活性剂流体系统（VES）和可分解的第一固体材料，优选纤维形式，其在流体否则会泄漏的位置处形成在井中的包装或塞子，然后在没有干预的情况下分解以释放该产品是VES的表面活性剂或胶束的断裂剂。该组合物任选地还含有影响第一固体分解的pH控制剂和第二固体（也可以是流体损失剂）。

8. 发明授权

US07148185B2 Viscoelastic surfactant fluids stable at high brine concentration and methods of using same 有权
标题翻译：粘弹性表面活性剂流体在高盐水浓度下稳定，使用方法如下
公开(公告)号：US07148185B2
公开(公告)日：2006-12-12
申请号：US10249830
申请日：2003-05-09
申请人： Diankui Fu , Yiyan Chen , Zhijun Xiao , Mathew Samuel , Sylvie Daniel
发明人： Diankui Fu , Yiyan Chen , Zhijun Xiao , Mathew Samuel , Sylvie Daniel
IPC分类号： C09K8/52 , C09K5/58 , C09K8/60
CPC分类号： C09K8/06 , C09K8/506 , C09K8/508 , C09K8/52 , C09K8/62 , C09K8/68 , C09K2208/30
摘要： A viscous aqueous high density well treatment fluid composition stable at high temperature containing a surfactant and inorganic salts is described. Methods of preparing the fluid and increasing the stability and viscosity of the fluid are given. The fluid is useful for wellbore cleanout, hydraulic fracturing, gravel packing, completion, acid diversion, lost circulation reduction, well killing, cementing, selective water shutoff, and fracture fluid diversion.
摘要翻译：描述了含有表面活性剂和无机盐的在高温下稳定的粘稠的高密度水溶液高效液体组合物。给出了制备流体和提高流体稳定性和粘度的方法。该流体可用于井筒清理，水力压裂，砾石填充，完井，酸分解，减少循环，排除井，固井，选择性水切断和断裂流体分流。

9. 发明授权

US07691789B2 Self-cleaning well control fluid 有权
标题翻译：自清洗井控流体
公开(公告)号：US07691789B2
公开(公告)日：2010-04-06
申请号：US11278191
申请日：2006-03-31
申请人： Diankui Fu , Steve Russell , Mathew Samuel
发明人： Diankui Fu , Steve Russell , Mathew Samuel
IPC分类号： C09K8/68
CPC分类号： C09K8/74 , C09K2208/30
摘要： A composition and method is given for a well control fluid that is injected into a well during completion or remediation and prevents fluid flow from a formation into the well during operations (such as shut-in, or placement or adjustment of tools/hardware) when no fluid flow is desired. The composition includes a viscoelastic surfactant fluid system (VES) and a decomposable first solid material, preferably in fiber form, that forms a pack or plug in the well at the location where fluid would otherwise leak off, and then decomposes without intervention to release a product that is a breaker for the surfactant or the micelles of the VES. The composition optionally also contains a pH control agent and a second solid (that may also be a fluid loss agent) that affect the decomposition of the first solid.
摘要翻译：给出了一种组合物和方法，用于在完井或修复期间注入井中的井控流体，并且在操作期间（例如关闭，放置或调整工具/硬件），防止流体从地层流入井中不需要流体流动。组合物包括粘弹性表面活性剂流体系统（VES）和可分解的第一固体材料，优选纤维形式，其在流体否则会泄漏的位置处形成在井中的包装或塞子，然后在没有干预的情况下分解以释放该产品是VES的表面活性剂或胶束的断裂剂。该组合物任选地还含有影响第一固体分解的pH控制剂和第二固体（也可以是流体损失剂）。

10. 发明授权

US09657557B2 Methods for servicing subterranean wells 有权
公开(公告)号：US09657557B2
公开(公告)日：2017-05-23
申请号：US13879026
申请日：2010-11-12
申请人： Vladimir Sergeevich Bugrin , Diankui Fu
发明人： Vladimir Sergeevich Bugrin , Diankui Fu
IPC分类号： E21B19/18 , E21B43/16 , C09K8/512 , C09K8/514 , E21B21/00 , E21B33/138 , C09K8/00 , C09K8/50
CPC分类号： E21B43/16 , C09K8/00 , C09K8/50 , C09K8/512 , C09K8/514 , C09K2208/08 , E21B21/003 , E21B33/138
摘要： Methods for controlling fluid flow through one or more pathways in one or more rock formations penetrated by a borehole in a subterranean well, comprise injecting into or adjacent to the formation a treatment fluid comprising at least one polysaccharide polymer; at least one crosslinker; and fibers, or a mixture of fibers and particles. The fluids are pumped into the well through a tubular body that comprises at least one flow restriction. Shearing of the treatment fluid as it passes through the flow restriction causes the viscosity to decrease, allowing the fibers to form masses that migrate to formation-rock openings such as pores, cracks, fissures and vugs. As a result, the fibrous masses are useful for curing lost circulation, providing fluid-loss control and as diverting agents.

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