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1.发明授权Composition of base fluid and polymeric dispersing agent-absorbed polymer-coated colloidal particles 有权基础液和聚合物分散剂吸收的聚合物涂覆胶体颗粒的组成公开(公告)号：US07727939B2
公开(公告)日：2010-06-01
申请号：US11015124
申请日：2004-12-17
CPC分类号： B41F31/26 , B41F31/027 , Y10S507/906
摘要： A method of controlling the pressure of a casing annulus in a subterranean well that includes injecting into the casing annulus a composition including a base fluid and a polymer coated colloidal solid material. The polymer coated colloidal solid material includes: a solid particle having an weight average particle diameter (d50) of less than two microns, and a polymeric dispersing agent coated onto the surface of the solid particle during the cominution (i.e. grinding) process utilized to make the colloidal particles. The polymeric dispersing agent may be a water soluble polymer having a molecular weight of at least 2000 Daltons. The solid particulate material may be selected from materials having of specific gravity of at least 2.68 and preferably the solid particulate material may be selected from barium sulfate (barite), calcium carbonate, dolomite, ilmenite, hematite, olivine, siderite, strontium sulfate, combinations and mixtures of these and other similar solids that should be apparent to one of skill in the art.
摘要翻译： 一种控制地下井中的壳体环的压力的方法，其包括向壳体环空注入包含基础流体和聚合物涂覆的胶态固体材料的组合物。 聚合物涂覆的胶态固体材料包括：重均粒径（d50）小于2微米的固体颗粒，以及在用于制备（a）的过程中涂覆在固体颗粒表面上的聚合物分散剂 胶体颗粒。 聚合物分散剂可以是分子量至少为2000道尔顿的水溶性聚合物。 固体颗粒材料可以选自具有至少2.68的比重的材料，并且优选固体颗粒材料可以选自硫酸钡（重晶石），碳酸钙，白云石，钛铁矿，赤铁矿，橄榄石，菱铁矿，硫酸锶，组合 以及这些和其他类似固体的混合物，其对于本领域技术人员应该是显而易见的。
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2.发明授权Additive for increasing the density of a fluid for casing annulus pressure control 有权用于增加套管环空压力控制的流体密度的添加剂公开(公告)号：US07449431B2
公开(公告)日：2008-11-11
申请号：US11015125
申请日：2004-12-17
CPC分类号： B41F31/26 , B41F31/027 , Y10S507/906
摘要： A method of controlling the pressure of a casing annulus in a subterranean well that includes injecting into the casing annulus a composition including a base fluid and a polymer coated colloidal solid material. The polymer coated colloidal solid material includes: a solid particle having an weight average particle diameter (d50) of less than two microns, and a polymeric dispersing agent coated onto the surface of the solid particle during the comminution (i.e. grinding) process utilized to make the colloidal particles. The polymeric dispersing agent may be a water soluble polymer having a molecular weight of at least 2000 Daltons. The solid particulate material may be selected from materials having of specific gravity of at least 2.68 and preferably the solid particulate material may be selected from barium sulfate (barite), calcium carbonate, dolomite, ilmenite, hematite, olivine, siderite, strontium sulfate, combinations and mixtures of these-and other similar solids.
摘要翻译： 一种控制地下井中的壳体环的压力的方法，其包括向壳体环空注入包含基础流体和聚合物涂覆的胶态固体材料的组合物。 聚合物涂覆的胶体固体材料包括：具有小于2微米重量平均粒径（d <50>）的固体颗粒和在粉碎期间涂覆在固体颗粒表面上的聚合物分散剂 （即研磨）工艺用于制备胶体颗粒。 聚合物分散剂可以是分子量至少为2000道尔顿的水溶性聚合物。 固体颗粒材料可以选自具有至少2.68的比重的材料，并且优选固体颗粒材料可以选自硫酸钡（重晶石），碳酸钙，白云石，钛铁矿，赤铁矿，橄榄石，菱铁矿，硫酸锶，组合 以及这些和其它类似固体的混合物。
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