公开(公告)号：US06978835B1

公开(公告)日：2005-12-27

申请号：US10963036

申请日：2004-10-11

申请人： B. Raghava Reddy ,  Dennis W. Gray ,  Bryan K. Waugh ,  Jan Pieter Vijn

发明人： B. Raghava Reddy ,  Dennis W. Gray ,  Bryan K. Waugh ,  Jan Pieter Vijn

IPC分类号： C04B28/02 ,  C09K8/467 ,  E21B33/13

CPC分类号： C04B28/02 ,  C04B2103/22 ,  C09K8/467 ,  Y02W30/92 ,  C04B20/002 ,  C04B20/0048 ,  C04B22/0013 ,  C04B22/16 ,  C04B24/04 ,  C04B24/161 ,  C04B2103/408 ,  C04B2103/46 ,  C04B2103/50 ,  C04B18/08 ,  C04B24/123 ,  C04B24/20 ,  C04B38/10

摘要： A method of retarding the set time of a cement composition comprising providing a cement composition that comprises water and a cement, and retarding the set time of the cement composition by including a copolymer retarder in the cement composition, wherein the copolymer retarder comprises olefinically unsaturated non-acrylate sulfonate monomers and olefinically unsaturated carboxylic acid monomers. Methods of cementing in a subterranean formation also are provided.

摘要翻译： 一种延缓水泥组合物的凝固时间的方法，包括提供包含水和水泥的水泥组合物，并通过在水泥组合物中包括共聚物缓凝剂来延缓水泥组合物的凝固时间，其中共聚物缓凝剂包含烯属不饱和非 - 丙烯酸酯磺酸酯单体和烯属不饱和羧酸单体。 还提供了在地层中固井的方法。

公开(公告)号：US06829922B2

公开(公告)日：2004-12-14

申请号：US10255124

申请日：2002-09-25

申请人： Ronald J. Patin ,  Dennis W. Gray ,  James H. Cantrell ,  D. Chad Brenneis ,  Garland W. Davis ,  Wendell D. Riley

发明人： Ronald J. Patin ,  Dennis W. Gray ,  James H. Cantrell ,  D. Chad Brenneis ,  Garland W. Davis ,  Wendell D. Riley

IPC分类号： G01N3700

CPC分类号： G01N9/00 ,  G01N33/383 ,  G01N2203/00

摘要： A test method for foamed cement does not transfer the test composition under pressure from one device to another and the equipment is not handled under dangerous pressure, thereby providing a safe test method. Steps include: rotating a paddle at a first speed in a pressurized foamable cement composition in a receptacle in a high pressure, high temperature chamber such that the foamable cement composition becomes a foamed cement; rotating the paddle at a second speed in the pressurized foamed cement for a selected time period; maintaining the foamed cement static after the selected time period and increasing temperature in the chamber during a foamed cement setting period; thereafter reducing temperature in the chamber and reducing pressure in the chamber; removing the foamed cement in a set condition and the paddle from the chamber; removing the set foamed cement from the paddle; and testing the removed foamed cement.

公开(公告)号：US4823594A

公开(公告)日：1989-04-25

申请号：US167830

申请日：1988-03-14

申请人： Dennis W. Gray

发明人： Dennis W. Gray

IPC分类号： E21B33/13 ,  G01N11/10

CPC分类号： E21B33/13 ,  G01N11/10

摘要： A slurry container for use in a consistometer to test a cement slurry includes a cup and a sealed pressure communicating structure. The sealed pressure communicating structure includes a baffle plate, a thermocouple well threadedly connected to an internal surface of a neck portion of the baffle plate, and a diaphragm extending radially between an outer surface of the neck portion of the baffle plate and an inner surface of the cup and longitudinally between facing surfaces of the baffle plate and a flange of the thermocouple well. A paddle is mounted on a shaft which is pivoted between the lower end of the thermocouple well and the bottom of the cavity defined in the cup. Magnets are mounted on the paddle to provide magnetic coupling across the sealed boundary defined by the baffle plate, thermocouple well and diaphragm assembly.

摘要翻译： 在稠度计中用于测试水泥浆料的浆料容器包括杯和密封的压力连通结构。 密封的压力连通结构包括挡板，良好螺纹连接到挡板的颈部的内表面的热电偶，以及在挡板的颈部的外表面之间径向延伸的隔膜和 杯子和纵向在挡板的相对表面之间和热电偶的凸缘井。 桨叶安装在轴上，该轴在热电偶井的下端和限定在杯中的腔的底部之间枢转。 磁铁安装在桨上，以提供跨越由挡板，热电偶井和隔膜组件限定的密封边界的磁耦合。