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1.发明授权公开(公告)号：US07271131B2
公开(公告)日：2007-09-18
申请号：US10656047
申请日：2003-09-05
IPC分类号： C09K8/36
摘要： An oil-based drilling fluid having a polymer latex capable of providing a deformable latex film on at least a portion of a subterranean sand formation has been discovered to inhibit or control fluid loss and act as a sealing agent when used to drill in sand formations for hydrocarbon recovery operations. Typically, the polymer latex is an aqueous suspension of particles formed by emulsion polymerization that is in turn emulsified into a hydrocarbon base fluid. The polymer particles of suitable size precipitate onto the pores of a subterranean sand formation to at least partial seal the formation with a deformable polymer film.
摘要翻译： 已经发现具有能够在地下砂层的至少一部分上提供可变形胶乳膜的聚合物胶乳的油基钻井液被发现以抑制或控制流体损失，并且当用于在砂层中钻孔时用作密封剂 碳氢化合物回收作业。 通常，聚合物胶乳是通过乳液聚合形成的颗粒的水性悬浮液，其进而乳化成烃基流体。 合适尺寸的聚合物颗粒沉淀到地下砂层的孔中，以至少部分地用可变形聚合物膜密封地层。
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公开(公告)号：US07393813B2
公开(公告)日：2008-07-01
申请号：US10634334
申请日：2003-08-04
IPC分类号： C09K8/487
摘要： A water-based drilling fluid having a polymer latex capable of providing a deformable latex film on at least a portion of a subterranean formation has been discovered to provide reduced drilling fluid pressure invasion when used to drill in shale formations for hydrocarbon recovery operations. A precipitating agent such as a silicate or an aluminum complex (e.g. sodium aluminate) is preferably used in conjunction with the polymer. Typically, the water present contains a salt to form a brine, often to saturation, although the invention may be practiced with fresh water. If a salt is employed, it is often helpful to additionally employ a surfactant, such as a betaine, for example.
摘要翻译： 已经发现具有能够在地层的至少一部分上提供可变形胶乳膜的聚合物胶乳的水基钻井液被提供用于在用于烃回收操作的页岩地层中钻井时提供降低的钻井液压力侵入。 沉淀剂如硅酸盐或铝络合物（例如铝酸钠）优选与聚合物结合使用。 通常，存在的水包含盐以形成盐水，通常饱和，尽管本发明可以用淡水实施。 如果使用盐，通常有助于另外使用表面活性剂，例如甜菜碱。
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3.发明授权Glycols as gas hydrate inhibitors in drilling, drill-in, and completion fluids 失效二氧化碳作为钻井，钻进和完井液中的气体水合物抑制剂
公开(公告)号：US6080704A
公开(公告)日：2000-06-27
申请号：US814247
申请日：1997-03-11
CPC分类号： C09K8/52 , C09K8/035 , C09K8/06 , C09K2208/22
摘要： The present invention provides a method for suppressing the formation of hydrates during drilling operations under conditions that are conducive to hydrate formation comprising using a water based fluid selected from the group consisting of a drilling, a drill-in, and a completion fluid, wherein said water based fluid comprises as an integral component a hydrate suppressing amount of a water-soluble organic compound having a molecular weight below about 800 and said fluid has effective rheology and fluid loss control properties.
摘要翻译： 本发明提供了一种用于在有利于水合物形成的条件下在钻井操作期间抑制水合物的形成的方法，包括使用选自钻井，钻入和完井流体的水基流体，其中所述 水基流体包含水合物抑制量的分子量低于约800的水溶性有机化合物作为组分成分，所述流体具有有效的流变学和流体损失控制性质。
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公开(公告)号：US06790812B2
公开(公告)日：2004-09-14
申请号：US09997830
申请日：2001-11-30
IPC分类号： C09K700
CPC分类号： C09K8/5045 , C09K8/16 , Y10S507/906
摘要： High fluid loss acid soluble lost circulation material and spotting pill comprising the lost circulation material. The spotting pill preferably is weighted to a density substantially the same as the drilling fluid used to treat the formation.
摘要翻译： 高流失酸性可溶性缺水循环材料和包含失水循环材料的斑点丸。 点样丸优选被称重为与用于治疗地层的钻井液基本相同的密度。
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5.发明授权Low molecular weight water soluble organic compounds as crystallization point suppressants in brines 失效低分子量水溶性有机化合物作为盐水中的结晶点抑制剂公开(公告)号：US06635604B1
公开(公告)日：2003-10-21
申请号：US09666726
申请日：2000-09-20
IPC分类号： C09K702
CPC分类号： C09K8/06
摘要： A brine for use during drilling operations, preferably a completion brine, comprising an amount of a low molecular weight water-soluble organic compound effective to reduce the crystallization point of the brine. The low molecular weight water soluble organic compound can be a variety of compounds, with preferred compounds being ethylene glycol, tripropylene glycol bottoms, and combinations thereof. A method of lowering the crystallization point of the brine using a low molecular weight water soluble organic compound also is provided.
摘要翻译： 在钻井操作期间使用的盐水，优选完井盐水，其包含一定量的有效降低盐水结晶点的低分子量水溶性有机化合物。 低分子量水溶性有机化合物可以是多种化合物，优选的化合物是乙二醇，三丙二醇底物及其组合。 还提供了使用低分子量水溶性有机化合物降低盐水的结晶点的方法。
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6.发明授权Purified paraffins as lubricants, rate of penetration enhancers, and spotting fluid additives for water-based drilling fluids 失效作为润滑剂的纯化石蜡，渗透促进剂的速率和水基钻井液的点样液添加剂
公开(公告)号：US5837655A
公开(公告)日：1998-11-17
申请号：US641595
申请日：1996-05-01
CPC分类号： C09K8/18 , C09K8/02 , E21B31/03 , C09K2208/02 , Y10S507/905
摘要： The present invention provides non-toxic, biodegradable purified paraffins which may be used as lubricants, rate of penetration enhancers, and/or spotting fluids for water-based drilling muds. When used as a spotting fluid additive, the paraffin isomers preferably are supplemented with functional additives, namely emulsifiers, viscosifiers, surfactants, and/or brine. When used as lubricants and/or rate of penetration enhancers, the paraffin isomers preferably are used alone or in combination with surfactants.
摘要翻译： 本发明提供了可用作水基钻井泥浆的无毒，可生物降解的纯化石蜡，其可用作润滑剂，渗透促进剂速率和/或点样液。 当用作点样液添加剂时，链烷烃异构体优选补充有功能添加剂，即乳化剂，增粘剂，表面活性剂和/或盐水。 当用作润滑剂和/或渗透促进剂的速率时，链烷烃异构体优选单独使用或与表面活性剂组合使用。
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7.发明授权Blends of glycol derivatives as gas hydrate inhibitors in water base drilling, drill-in, and completion fluids 失效乙二醇衍生物的混合物作为水基钻井，钻入和完井液中的天然气水合物抑制剂
公开(公告)号：US6165945A
公开(公告)日：2000-12-26
申请号：US9554
申请日：1998-01-20
CPC分类号： C09K8/52 , C09K8/035 , C09K8/06 , C09K2208/22 , Y10S507/925
摘要： A drilling, drill-in, or completion fluid comprising water as a continuous phase, said continuous phase comprising a gas hydrate inhibiting amount of a blend comprising an ethylene glycol derivative and a propylene glycol derivative. The propylene glycol derivative is present in an amount effective to inhibit hydration of shale by the water base. The density of the fluid may be reduced by substituting the blend for salt, and by increasing the amount of propylene glycol derivative in the blend. The blend preferably should comprise at least about 10 vol % of the fluid, and a preferred ratio in the blend is about 35 vol % tripropylene glycol bottoms to about 65 vol % ethylene glycol.
摘要翻译： 包括水作为连续相的钻井，钻进或完井流体，所述连续相包含气体水合物抑制量的包含乙二醇衍生物和丙二醇衍生物的共混物。 丙二醇衍生物以有效抑制页岩水合水分的量存在。 通过用共混物代替盐，并通过增加共混物中丙二醇衍生物的量，可以减少流体的密度。 共混物优选应包含至少约10体积％的流体，并且共混物中优选的比例为约35体积％的三丙二醇底物至约65体积％的乙二醇。
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公开(公告)号：US20100210481A1
公开(公告)日：2010-08-19
申请号：US12707830
申请日：2010-02-18
申请人： Tao Xiang , Dennis K. Clapper , Donald C. Krause
发明人： Tao Xiang , Dennis K. Clapper , Donald C. Krause
IPC分类号： C09K8/24
摘要： A drilling fluid has a redispersible polymer powder introduced as a water dispersion that is capable of providing a deformable latex film on at least a portion of a subterranean sand formation and which inhibits or controls fluid loss and acts as a sealing agent when used to drill in sand formations for hydrocarbon recovery operations. The redispersible polymer powder may be made by drying the emulsion in which they are formed and then grinding into a powder or by spray drying. The polymer particles of suitable size precipitate or collect or assemble onto the pores of a subterranean sand formation to at least partial seal the formation with a deformable polymer film.
摘要翻译： 钻井液具有作为水分散体引入的可再分散的聚合物粉末，其能够在地下砂层的至少一部分上提供可变形的胶乳膜，并且其在用于钻入时可以抑制或控制流体损失并用作密封剂 用于碳氢化合物回收作业的砂层。 可再分散的聚合物粉末可以通过干燥形成它们的乳液然后研磨成粉末或通过喷雾干燥而制成。 合适尺寸的聚合物颗粒沉淀或收集或组装到地下砂层的孔中，以至少部分地用可变形聚合物膜密封地层。
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公开(公告)号：US08053394B2
公开(公告)日：2011-11-08
申请号：US12707830
申请日：2010-02-18
申请人： Tao Xiang , Dennis K. Clapper , Donald C. Krause
发明人： Tao Xiang , Dennis K. Clapper , Donald C. Krause
摘要： A drilling fluid has a redispersible polymer powder introduced as a water dispersion that is capable of providing a deformable latex film on at least a portion of a subterranean sand formation and which inhibits or controls fluid loss and acts as a sealing agent when used to drill in sand formations for hydrocarbon recovery operations. The redispersible polymer powder may be made by drying the emulsion in which they are formed and then grinding into a powder or by spray drying. The polymer particles of suitable size precipitate or collect or assemble onto the pores of a subterranean sand formation to at least partial seal the formation with a deformable polymer film.
摘要翻译： 钻井液具有作为水分散体引入的可再分散的聚合物粉末，其能够在地下砂层的至少一部分上提供可变形的胶乳膜，并且其在用于钻入时可以抑制或控制流体损失并用作密封剂 用于碳氢化合物回收作业的砂层。 可再分散的聚合物粉末可以通过干燥形成它们的乳液然后研磨成粉末或通过喷雾干燥而制成。 合适尺寸的聚合物颗粒沉淀或收集或组装到地下砂层的孔中，以至少部分地用可变形聚合物膜密封地层。
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公开(公告)号：US06703351B2
公开(公告)日：2004-03-09
申请号：US09785842
申请日：2001-02-16
IPC分类号： C09K702
摘要： A water-based drilling fluid having a polymer latex capable of providing a deformable latex film on at least a portion of a subterranean formation has been discovered to provide reduced drilling fluid pressure invasion when used to drill in shale formations for hydrocarbon recovery operations. A precipitating agent such as a silicate or an aluminum complex (e.g. sodium aluminate) is preferably used in conjunction with the polymer. Typically, the water present contains a salt to form a brine, often to saturation, although the invention may be practiced with fresh water. If a salt is employed, it is often helpful to additionally employ a surfactant, such as a betaine, for example.
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