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公开(公告)号：US06632779B1
公开(公告)日：2003-10-14
申请号：US09666929
申请日：2000-09-21
IPC分类号： C09K300
摘要： This invention relates to a wellbore treatment fluid and a method of enhancing wellbore treatment fluids to increase efficiency and productivity of wells. More specifically this invention provides methods for enhancing the thermal stability of wellbore treatment fluids such as drill-in, completion, work-over, packer, well treating, testing, spacer, or hole abandonment fluids. The methods include providing a wellbore treatment fluid that includes a polyol selected from glycerol, glycols and polyglycols as well as a polysaccharide viscosifier. The fluid prepared for use in this invention find particularly advantageous use as a completion fluid and as a fluid loss pill. However, the fluid can include a wide variety of additional agents to modify the physical and chemical properties of the wellbore treatment fluid.
摘要翻译： 本发明涉及井眼处理流体和增强井筒处理流体以提高井的效率和生产率的方法。 更具体地，本发明提供了用于提高井筒处理流体的热稳定性的方法，例如钻入，完井，修补，封隔器，井处理，测试，间隔物或抛空液。 所述方法包括提供包含选自甘油，二醇和聚二醇的多元醇以及多糖增粘剂的井筒处理流体。 制备用于本发明的流体特别有利于作为完成液和作为流体损失药丸使用。 然而，流体可以包括各种附加试剂以改变井眼处理流体的物理和化学性质。
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公开(公告)号：US06489270B1
公开(公告)日：2002-12-03
申请号：US09226682
申请日：1999-01-07
IPC分类号： C09K300
摘要： This invention relates to a wellbore treatment fluid and a method of enhancing wellbore treatment fluids to increase efficiency and productivity of wells. More specifically this invention provides methods for enhancing the thermal stability of wellbore treatment fluids such as drill-in, completion, work-over, packer, well treating, testing, spacer, or hole abandonment fluids. The methods include providing a wellbore treatment fluid that includes a polyol selected from glycerol, glycols and polyglycols as well as a polysaccharide viscosifier. The fluid prepared for use in this invention find particularly advantageous use as a completion fluid and as a fluid loss pill. However, the fluid can include a wide variety of additional agents to modify the physical and chemical properties of the wellbore treatment fluid.
摘要翻译： 本发明涉及井眼处理流体和增强井筒处理流体以提高井的效率和生产率的方法。 更具体地，本发明提供了用于提高井筒处理流体的热稳定性的方法，例如钻入，完井，修补，封隔器，井处理，测试，间隔物或抛空液。 所述方法包括提供包含选自甘油，二醇和聚二醇的多元醇以及多糖增粘剂的井筒处理流体。 制备用于本发明的流体特别有利于作为完成液和作为流体损失药丸使用。 然而，流体可以包括各种附加试剂以改变井眼处理流体的物理和化学性质。
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公开(公告)号：US06248700B1
公开(公告)日：2001-06-19
申请号：US09185795
申请日：1998-11-04
IPC分类号： C09K300
CPC分类号： C09K8/54 , C09K8/06 , C23F11/126 , Y10S507/939
摘要： This invention relates to novel compositions and methods whereby a carboxylate based brine solution is used in drilling and/or well bore treating operations to inhibit corrosion of fluid handling equipment. In one embodiment of the invention the carboxylate based brine solution consists of a carboxylate salt dissolved in water. This brine solution is used to prepare halide-free drilling fluids. Use of halide-free drilling fluids inhibits corrosion stainless steel surfaces of fluid handling equipment. In an alternative embodiment of the present invention a mixed salt brine containing a carboxylate salt and a halide salt is provided for use in a drilling and/or well bore treating operations.
摘要翻译： 本发明涉及新的组合物和方法，其中使用基于羧酸盐的盐水溶液用于钻井和/或井眼处理操作以抑制流体处理设备的腐蚀。 在本发明的一个实施方案中，基于羧酸盐的盐水溶液由溶于水的羧酸盐组成。 该盐水溶液用于制备无卤化物钻井液。 使用无卤化物钻井液抑制流体处理设备的腐蚀不锈钢表面。 在本发明的另一个实施方案中，提供了含有羧酸盐和卤化物盐的混合盐水盐，用于钻井和/或井眼处理操作。
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公开(公告)号：US5785747A
公开(公告)日：1998-07-28
申请号：US785197
申请日：1997-01-17
摘要： The present invention provides compositions useful for viscosifying aqueous fluids, methods for making them and methods for using them. In one aspect of the invention, inventive compositions comprise a prehydrating alcohol having at least two hydroxyl groups and having a molecular weight of from about 60 to about 600; an inorganic salt; and a polymer. In a preferred aspect of the invention, the viscosifier composition additionally comprises a solvent having a molecular weight of from about 75 to about 1000. According to another aspect of the invention, inventive compositions comprise a prehydrating alcohol; an inorganic salt; and a polymer; and the composition is essentially free from water. Inventive compositions find advantageous use in viscosifying fluids utilized in subterranean drilling activities such as, for example, drilling, drill-in, completion, hydraulic fracturing, work-over, packer, well treating, testing, spacer, or hole abandonment fluids.
摘要翻译： 本发明提供了可用于增稠水性流体的组合物，其制备方法和使用它们的方法。 在本发明的一个方面，本发明的组合物包含具有至少两个羟基并且分子量为约60至约600的预水解醇; 无机盐; 和聚合物。 在本发明的优选方面，增粘剂组合物另外包含分子量为约75至约1000的溶剂。根据本发明的另一方面，本发明组合物包含预水合醇; 无机盐; 和聚合物; 并且组合物基本上不含水。 本发明的组合物在地下钻井活动例如钻井，钻进，完井，水力压裂，加工，封隔器，井处理，测试，间隔件或抛空液中的粘稠流体中发现有利的用途。
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5.发明授权公开(公告)号：US08003578B2
公开(公告)日：2011-08-23
申请号：US12030614
申请日：2008-02-13
IPC分类号： C09K8/08
摘要： Brine-based well treatment compositions containing alkali nitrate exhibit greater thermal stability when used in deep wells than substantially similar brine-based well treatment compositions which do not contain an alkali nitrate. The brine is thickened with a water-soluble crosslinkable polymer and crosslinking agent. The enhanced thermal stability of the well treatment compositions allows use of the fluids at elevated temperatures, for instance as high as 400° F.
摘要翻译： 含有碱金属硝酸盐的基于盐的井处理组合物在深井中的热稳定性显示出比基本上类似于不含硝酸碱盐的基于盐的井处理组合物更好的热稳定性。 盐水用水溶性交联聚合物和交联剂增稠。 井处理组合物的增强的热稳定性允许在高温下使用流体，例如高达400°F。
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6.发明申请Well Treatment Compositions Containing Nitrate Brines and Method of Using Same 有权含有硝酸盐盐的良好处理组合物及其使用方法公开(公告)号：US20090203554A1
公开(公告)日：2009-08-13
申请号：US12030614
申请日：2008-02-13
IPC分类号： C09K8/10
摘要： Brine-based well treatment compositions containing alkali nitrate exhibit greater thermal stability when used in deep wells than substantially similar brine-based well treatment compositions which do not contain an alkali nitrate. The brine is thickened with a water-soluble crosslinkable polymer and crosslinking agent. The enhanced thermal stability of the well treatment compositions allows use of the fluids at elevated temperatures, for instance as high as 400° F.
摘要翻译： 含有碱金属硝酸盐的基于盐的井处理组合物在深井中的热稳定性显示出比基本上类似于不含硝酸碱盐的基于盐的井处理组合物更好的热稳定性。 盐水用水溶性交联聚合物和交联剂增稠。 井处理组合物的增强的热稳定性允许在高温下使用流体，例如高达400°F。
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7.发明授权High density, viscosified, aqueous compositions having superior stability under stress conditions 失效高密度，粘稠的含水组合物在应力条件下具有优异的稳定性
公开(公告)号：US6100222A
公开(公告)日：2000-08-08
申请号：US783459
申请日：1997-01-16
CPC分类号： C09K8/08 , C09K8/12 , C09K2208/18
摘要： Advantageous aqueous mixed salt systems viscosified with water-soluble or water-dispersable polymers which are superior to corresponding single salt systems of similar densities are provided. The mixed salt systems comprise water; a water-soluble or water-dispersable polymer capable of viscosifying an aqueous medium; one or more cations including a member selected from the group consisting of lithium, sodium, potassium, cesium, magnesium, calcium, zinc, or mixtures thereof; and one or more anions including a member selected from the group consisting of chloride, bromide, iodide, formate, nitrate, acetate, cyanate, thiocyanate, a zinc complex anion or mixtures thereof; there being present either at least two cations or at least two anions. Inventive viscosified mixed salt systems display--under such stressing factors as aging, heat, mechanical agitation, and shear--greater stability compared to the single salt systems of similar densities. Also provided are methods for making viscosified mixed salt systems and methods for advantageously using the same as drilling, drill-in, completion, hydraulic fracturing, work-over, packer, well treating, testing, spacer, or hole abandonment fluids.
摘要翻译： 提供了优于具有相似密度的相应单盐体系的水溶性或水分散性聚合物增稠的有利的水性混合盐体系。 混合盐系统包括水; 水溶性或水分散性聚合物，其能够使水性介质变稠; 一种或多种阳离子，包括选自锂，钠，钾，铯，镁，钙，锌或其混合物的成员; 和一种或多种阴离子，其包括选自氯化物，溴化物，碘化物，甲酸盐，硝酸盐，乙酸盐，氰酸盐，硫氰酸盐，锌络合物阴离子或其混合物的成员; 存在至少两个阳离子或至少两个阴离子。 本发明的粘稠混合盐体系在与类似密度的单盐体系相比，在诸如老化，热，机械搅拌和剪切更大的稳定性等应力因素下显示。 还提供了用于制造粘稠混合盐体系的方法和有利地使用它们的方法，例如钻井，钻进，完井，水力压裂，研磨，封隔器，井处理，测试，间隔物或抛空液。
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