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1. 发明授权

US08895481B2 Viscoelastic surfactant acid treatment 有权
标题翻译：粘弹性表面活性剂酸处理
公开(公告)号：US08895481B2
公开(公告)日：2014-11-25
申请号：US12643522
申请日：2009-12-21
申请人： Yiyan Chen , Abbas Mahdi , Richard Marcinew , Matt Graham , Timothy L. Pope
发明人： Yiyan Chen , Abbas Mahdi , Richard Marcinew , Matt Graham , Timothy L. Pope
IPC分类号： C09K8/74 , C23F11/04 , C23F11/14
CPC分类号： C23F11/04 , C09K8/74 , C09K2208/30 , C23F11/141
摘要： A method of treating a subterranean formation penetrated by a wellbore involves introducing an acid treatment fluid through the wellbore into the formation. The treatment fluid is formed from a zwitterionic viscoelastic surfactant, an acid in an amount to provide the treatment fluid with an initial pH of ≦0 and a rheology enhancer. The treatment fluid has a high viscosity at the initial pH and a lower viscosity when the pH of the treatment fluid is raised to an intermediate pH of from greater than 0 to about 5.
摘要翻译：一种处理穿透井筒的地层的方法，包括将酸处理流体通过井筒引入地层。处理流体由两性离子粘弹性表面活性剂形成，酸的量使得处理流体的初始pH为＆lt; nEE; 0和流变增强剂。处理液在初始pH下具有高粘度，并且当处理流体的pH升高至大于0至约5的中间pH时，粘度较低。

2. 发明申请

US20110152135A1 VISCOELASTIC SURFACTANT ACID TREATMENT 有权
标题翻译：粘弹性表面活性剂处理
公开(公告)号：US20110152135A1
公开(公告)日：2011-06-23
申请号：US12643522
申请日：2009-12-21
申请人： Yiyan Chen , Abbas Mahdi , Richard Marcinew , Matt Graham , Timothy L. Pope
发明人： Yiyan Chen , Abbas Mahdi , Richard Marcinew , Matt Graham , Timothy L. Pope
IPC分类号： C09K8/528 , C09K8/72 , C09K8/70 , C09K8/60 , C09K8/588 , C09K8/74 , C23F11/14 , C09K8/68
CPC分类号： C23F11/04 , C09K8/74 , C09K2208/30 , C23F11/141
摘要： A method of treating a subterranean formation penetrated by a wellbore involves introducing an acid treatment fluid through the wellbore into the formation. The treatment fluid is formed from a zwitterionic viscoelastic surfactant, an acid in an amount to provide the treatment fluid with an initial pH of ≦0 and a rheology enhancer. The treatment fluid has a high viscosity at the initial pH and a lower viscosity when the pH of the treatment fluid is raised to an intermediate pH of from greater than 0 to about 5.
摘要翻译：一种处理穿透井筒的地层的方法，包括将酸处理流体通过井筒引入地层。处理流体由两性离子粘弹性表面活性剂形成，酸的量使得处理流体的初始pH为＆lt; nEE; 0和流变增强剂。处理液在初始pH下具有高粘度，并且当处理流体的pH升高至大于0至约5的中间pH时，粘度较低。

3. 发明申请

US20080051301A1 Surfactants not Toxic to Bacteria 有权
标题翻译：表面活性剂对细菌无毒性
公开(公告)号：US20080051301A1
公开(公告)日：2008-02-28
申请号：US11609137
申请日：2006-12-11
申请人： Yiyan Chen , Richard Marcinew , Carlos Abad
发明人： Yiyan Chen , Richard Marcinew , Carlos Abad
IPC分类号： C23F11/14
CPC分类号： C09K8/74 , C09K8/703 , C09K2208/30
摘要： An oilfield treatment method is given that uses fluids that contain surfactants used as foamers and/or viscosifiers such that the fluids pass the Alberta Energy and Utilities Board Directive 27 requirements for low toxicity to certain bioluminescent bacteria. Such fluids may be used in oilfield treatments, for example drilling and stimulation, near fresh water aquifers. The surfactants are certain non-ionic surfactants that are not aromatic, or certain amphoteric surfactants (that can be neutral), or certain zwitterionic surfactants, (in which both positive and negative charges are present in a single molecule so that the whole molecule is neutral).
摘要翻译：给出了一种油田处理方法，其使用含有用作起泡剂和/或增粘剂的表面活性剂的流体，使得流体通过对某些生物发光细菌的低毒性的要求。这种流体可用于油田处理，例如钻井和刺激，靠近淡水含水层。表面活性剂是不是芳族的某些非离子表面活性剂，或某些两性表面活性剂（可以是中性的）或某些两性离子表面活性剂（其中单个分子中存在正电荷和负电荷，使得整个分子是中性的）。

4. 发明授权

US07402549B2 Viscoelastic surfactant rheology modification 有权
标题翻译：粘弹性表面活性剂流变改性
公开(公告)号：US07402549B2
公开(公告)日：2008-07-22
申请号：US11012446
申请日：2004-12-15
申请人： Yiyan Chen , Jesse C. Lee , Philip F. Sullivan , Timothy L. Pope
发明人： Yiyan Chen , Jesse C. Lee , Philip F. Sullivan , Timothy L. Pope
IPC分类号： C09K8/58 , C09K8/68 , E21B21/00
CPC分类号： C09K8/68 , C09K8/602 , C09K2208/30
摘要： A method for shortening the shear recovery time of cationic, zwitterionic, and amphoteric viscoelastic surfactant fluid systems by adding an effective amount of a rheology enhancer selected from partially hydrolyzed polyvinyl ester and partially hydrolyzed polyacrylates. The rheology enhancer also increases fluid viscosity and very low rheology enhancer 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部分水解的聚乙烯酯和部分水解的聚丙烯酸酯的流变增强剂来缩短阳离子，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方法。流变增强剂还增加了流体粘度，并且需要非常低的流变学增强剂浓度。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。

5. 发明授权

US07291651B2 Carbon dioxide foamed fluids 有权
标题翻译：二氧化碳发泡流体
公开(公告)号：US07291651B2
公开(公告)日：2007-11-06
申请号：US10860855
申请日：2004-06-04
申请人： Yiyan Chen , Jesse Lee , Timothy L. Pope
发明人： Yiyan Chen , Jesse Lee , Timothy L. Pope
IPC分类号： B01F3/04 , B01F17/36 , C09K8/60 , E21B21/00 , E21B43/22
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。

6. 发明授权

US07741252B2 Surfactants not toxic to bacteria 有权
标题翻译：表面活性剂对细菌无毒
公开(公告)号：US07741252B2
公开(公告)日：2010-06-22
申请号：US11609137
申请日：2006-12-11
申请人： Yiyan Chen , Richard Marcinew , Carlos Abad
发明人： Yiyan Chen , Richard Marcinew , Carlos Abad
IPC分类号： C23F11/14 , C09K8/584
CPC分类号： C09K8/74 , C09K8/703 , C09K2208/30
摘要： An oilfield treatment method is given that uses fluids that contain surfactants used as foamers and/or viscosifiers such that the fluids pass the Alberta Energy and Utilities Board Directive 27 requirements for low toxicity to certain bioluminescent bacteria. Such fluids may be used in oilfield treatments, for example drilling and stimulation, near fresh water aquifers. The surfactants are certain non-ionic surfactants that are not aromatic, or certain amphoteric surfactants (that can be neutral), or certain zwitterionic surfactants, (in which both positive and negative charges are present in a single molecule so that the whole molecule is neutral).
摘要翻译：给出了一种油田处理方法，其使用含有用作起泡剂和/或增粘剂的表面活性剂的流体，使得流体通过对某些生物发光细菌的低毒性的要求。这种流体可用于油田处理，例如钻井和刺激，靠近淡水含水层。表面活性剂是不是芳族的某些非离子表面活性剂，或某些两性表面活性剂（可以是中性的）或某些两性离子表面活性剂（其中单个分子中存在正电荷和负电荷，使得整个分子是中性的）。

7. 发明授权

US07803744B2 Carbon dioxide foamed fluids 有权
标题翻译：二氧化碳发泡流体
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。

8. 发明授权

US07398826B2 Well treatment with dissolvable polymer 有权
标题翻译：用可溶性聚合物处理
公开(公告)号：US07398826B2
公开(公告)日：2008-07-15
申请号：US11316021
申请日：2005-12-21
申请人： Ann M. W. Hoefer , Philip F. Sullivan , Golchehreh Salamat , Curtis L. Boney , Jesse C. Lee , Yiyan Chen , Dean M. Willberg , Marina Bulova , Christopher N. Fredd , Belgin Baser , Timothy L. Pope
发明人： Ann M. W. Hoefer , Philip F. Sullivan , Golchehreh Salamat , Curtis L. Boney , Jesse C. Lee , Yiyan Chen , Dean M. Willberg , Marina Bulova , Christopher N. Fredd , Belgin Baser , Timothy L. Pope
IPC分类号： E21B43/267 , E21B43/22 , E21B21/00 , C09K8/80 , C09K8/035
CPC分类号： C09K8/516 , C09K8/12 , C09K8/506 , C09K8/5083 , C09K8/512 , C09K8/52 , C09K8/68 , C09K8/70 , C09K8/80 , C09K2208/08 , C09K2208/26
摘要： Well treatment is disclosed that includes injecting a well treatment fluid with insoluble polyol polymer such as polyvinyl alcohol (PVOH) dispersed therein, depositing the insoluble polymer in the wellbore or an adjacent formation, and thereafter dissolving the polymer by reducing salinity and/or increasing temperature conditions in the environment of the polymer deposit. The method is disclosed for filter cake formation, fluid loss control, drilling, hydraulic fracturing and fiber assisted transport, where removal of the polyol at the end of treatment or after treatment is desired. The method is also disclosed for providing dissolved polyol as a delayed breaker in crosslinked polymer viscosified systems and viscoelastic surfactant systems. Also disclosed are well treatment fluids containing insoluble amorphous or at least partially crystalline polyol, and a PVOH fiber composition wherein the fibers are stabilized from dissolution by salinity.
摘要翻译：公开了一种井处理方法，包括用不溶性多元醇聚合物（如分散在其中的聚乙烯醇（PVOH））注入井处理流体，将不溶性聚合物沉积在井筒或邻近地层中，然后通过降低盐度和/或升高温度溶解聚合物聚合物沉积环境条件。公开了用于滤饼形成，流体损失控制，钻井，水力压裂和纤维辅助运输的方法，其中期望在处理结束或处理后去除多元醇。还公开了用于在交联聚合物增粘体系和粘弹性表面活性剂体系中提供溶解的多元醇作为延迟的破乳剂的方法。还公开了含有不溶性无定形或至少部分结晶多元醇的良好处理液，以及其中纤维通过盐度溶解而稳定的PVOH纤维组合物。

9. 发明授权

US09102855B2 Removal of crystallinity in guar based materials and related methods of hydration and subterranean applications 有权
标题翻译：在瓜尔胶基材料中去除结晶度和相关的水合和地下应用方法
公开(公告)号：US09102855B2
公开(公告)日：2015-08-11
申请号：US12637795
申请日：2009-12-15
申请人： Yiyan Chen
发明人： Yiyan Chen
IPC分类号： C09K8/62 , C09K8/00 , C08B37/00 , C08L5/00 , C08L71/02 , C09K8/68
CPC分类号： C09K8/00 , C08B37/0096 , C08L5/00 , C08L71/02 , C09K8/685
摘要： Methods which include hydrating a crystalline polymeric material in a first liquid medium, precipitating the polymeric material to form an amorphous polymeric material, and combining amorphous polymeric material with a second liquid medium to form a treatment fluid. Alternative methods include hydrating a crystalline polymeric material in a first liquid medium, precipitating the polymeric material to form a lower crystalline form of the polymeric material, and combining the lower crystalline form of polymeric material with a second liquid medium to form a treatment fluid.
摘要翻译：方法包括在第一液体介质中水合结晶聚合物材料，沉淀聚合材料以形成无定形聚合物材料，以及将无定形聚合材料与第二液体介质结合以形成处理流体。替代方法包括在第一液体介质中水合结晶聚合物材料，沉淀聚合物材料以形成聚合物材料的较低结晶形式，并将聚合物材料的低结晶形式与第二液体介质结合以形成处理流体。

10. 发明申请

US20140131040A9 PROPPANT PILLAR PLACEMENT IN A FRACTURE WITH HIGH SOLID CONTENT FLUID 有权
标题翻译：具有高固体含量流体的裂缝中的特殊支柱
公开(公告)号：US20140131040A9
公开(公告)日：2014-05-15
申请号：US13073458
申请日：2011-03-28
申请人： Mohan K.R. Panga , Yiyan Chen , Moin Muhammad
发明人： Mohan K.R. Panga , Yiyan Chen , Moin Muhammad
IPC分类号： E21B43/267
CPC分类号： E21B43/267 , C09K8/70 , C09K8/80 , C09K2208/08 , E21B43/164
摘要： A method of placing proppant into a fracture formed in a subterranean formation from a wellbore is disclosed. The method comprises injecting through the wellbore a first treatment fluid to initiate the fracture in the subterranean formation; injecting through the wellbore a second treatment fluid comprising a particulate blend slurry made of proppant; the particulate blend comprising at least a first amount of particulates having a first average particle size between about 100 and 5000 μm and at least a second amount of particulates having a second average particle size between about three and twenty times smaller than the first average particle size; and forming with the particulate blend slurry a plurality of proppant-rich clusters spaced apart by proppant-free regions forming open channels.
摘要翻译：公开了一种将支撑剂置于从井眼形成在地层中的裂缝中的方法。该方法包括通过井眼喷射第一处理流体以引发地层中的断裂; 通过井筒注入包含由支撑剂制成的颗粒状混合浆料的第二处理流体; 所述颗粒混合物包含至少第一量的具有约100至5000μm的第一平均粒度的颗粒和至少第二量的第二平均粒度小于第一平均粒度的约2-3倍的颗粒 ; 以及与所述颗粒状混合浆料一起形成多个富支撑剂富集簇，其通过形成开放通道的无支撑剂区域间隔开。

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