公开(公告)号：US06544933B1

公开(公告)日：2003-04-08

申请号：US09011938

申请日：1998-07-13

申请人： Paul Ian Reid ,  Bernadette Craster ,  John Peter Crawshaw ,  Terence George Balson

发明人： Paul Ian Reid ,  Bernadette Craster ,  John Peter Crawshaw ,  Terence George Balson

IPC分类号： C09K702

CPC分类号： C07H15/04 ,  C09K8/08 ,  C09K8/22 ,  C09K2208/12

摘要： A water-based drilling fluid (WBM) comprises as additive a reaction product of a polyhydroxyalkane and alkylene oxide. The polyhydroxyalkane is desirably based on a monosacchoride, and is preferably sorbitol. The alkylene oxide may comprise ethylene oxide (EO), propylene oxide (PO) and/or butylene oxide (BO). Good results have been obtained with additives including Sorbitol+18EO, Sorbitol+9PO, Sorbitol+4EO+6BO, Sorbitol+6EO+6BO, or Sorbitol+6BO. Drilling fluids in accordance with the invention have been found in laboratory tests to exhibit improved shale inhibition properties as compared with known polyol containing WBM, particularly in the absence of added potassium ions. This is environmentally advantageous.

摘要翻译： 水性钻井液（WBM）包含聚羟基烷烃和环氧烷的反应产物作为添加剂。 聚羟基烷烃优选基于单糖，并且优选为山梨糖醇。 环氧烷可以包括环氧乙烷（EO），环氧丙烷（PO）和/或环氧丁烷（BO）。 使用山梨醇+ 18EO，山梨醇+ 9PO，山梨醇+ 4EO + 6BO，山梨醇+ 6EO + 6BO或山梨糖醇+ 6BO等添加剂可以获得良好的效果。 与已知的含有多元醇的WBM相比，特别是在没有添加的钾离子的情况下，在实验室试验中已经发现了本发明的钻井液体，以显示改进的页岩抑制性能。 这是环保的。

公开(公告)号：US06706667B1

公开(公告)日：2004-03-16

申请号：US09763239

申请日：2001-06-01

申请人： Carl Keith Smith ,  Terence George Balson

发明人： Carl Keith Smith ,  Terence George Balson

IPC分类号： C09K702

CPC分类号： C09K8/12

摘要： A shale-stabilizing additive is described which comprises a copolymer of an olefinically unsaturated hydrocarbon and an ethylenically unsaturated carboxylic acid, carbocylic acid salt or carboxylic acid anhydride with alkylene oxide based side chains. The additive can be used for water-based service fluids (WBM) to facilitate the drilling or completion process in shales or clayey formations.

摘要翻译： 描述了一种页岩稳定添加剂，其包括烯属不饱和烃和烯属不饱和羧酸的共聚物，碳酰基酸盐或羧酸酐与烯化氧基侧链的共聚物。 添加剂可用于水性服务流体（WBM），以便于在页岩或粘土层中的钻井或完井过程。