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1. 发明授权

US5851960A Method of performing well drilling operations with a foamable drilling fluid 失效
标题翻译：用可发泡钻井液进行钻井作业的方法
公开(公告)号：US5851960A
公开(公告)日：1998-12-22
申请号：US957268
申请日：1997-10-23
申请人： Patty L. Totten , Bobby L. King , James E. Griffith
发明人： Patty L. Totten , Bobby L. King , James E. Griffith
IPC分类号： B01F17/00 , C09K8/22 , C09K8/38 , C09K7/00 , E21B21/14
CPC分类号： B01F17/0085 , C09K8/22 , C09K8/38
摘要： A foamable drilling fluid for use in well operations such as deep water offshore drilling where risers are not employed in returning the fluid to the surface mud pit. A preferred foamable drilling fluid comprises a prehydrated clay such as bentonite, sea water, a surfactant selected from the group consisting of .alpha.-olefinsulfonates, alkylpolyglycosides, alcohol sulfates, salts of ethoxylated alcohol sulfates, and a stabilizing surfactant consisting of cocoamine betaine. The stabilized foam drilling fluid resists foam breakdown upon drilling cessation, prevents fluid loss to reduce filter cake buildup and increases the carrying capacity of cuttings and other solids. In addition, a foamable drilling fluid is provided including an hydraulic material selected from the group consisting of Portland cement, siliceous material like fumed silica, blast furnace slag and pozzolans such as fly ash. The hydraulic material solidifies the filter cake, reduces the filter cake permeability, and provide better bonding between the filter cake and cement slurry.
摘要翻译：用于诸如深水海上钻井的井操作中的可发泡钻井液，其中不使用立管将流体返回到地表泥浆坑。优选的可发泡钻井流体包括预水泥粘土，例如膨润土，海水，选自α-烯烃磺酸盐，烷基多糖苷，醇硫酸盐，乙氧基化醇硫酸盐的盐和由椰油胺甜菜碱组成的稳定表面活性剂的表面活性剂。稳定的泡沫钻井液在钻井停止时抵抗泡沫破裂，防止流体损失，减少滤饼积聚，增加切屑和其他固体的承载能力。此外，提供了一种可发泡钻井液，其包括选自波特兰水泥，硅质材料如煅制二氧化硅，高炉矿渣和火山灰如飞灰的水硬性材料。液压材料固化滤饼，降低滤饼渗透性，并提供滤饼和水泥浆之间更好的粘结。

2. 发明授权

US5716910A Foamable drilling fluid and methods of use in well drilling operations 失效
标题翻译：可钻孔钻井液和钻井作业中的使用方法
公开(公告)号：US5716910A
公开(公告)日：1998-02-10
申请号：US525885
申请日：1995-09-08
申请人： Patty L. Totten , Bobby L. King , James E. Griffith
发明人： Patty L. Totten , Bobby L. King , James E. Griffith
IPC分类号： B01F17/00 , C09K8/22 , C09K8/38 , C09K7/00
CPC分类号： B01F17/0085 , C09K8/22 , C09K8/38
摘要： A foamable drilling fluid for use in well operations such as deep water offshore drilling where risers are not employed in returning the fluid to the surface mud pit. A preferred foamable drilling fluid comprises a prehydrated clay such as bentonite, sea water, a surfactant selected from the group consisting of .alpha.-olefinsulfonates, alkylpolyglycosides, alcohol sulfates, salts of ethoxylated alcohol sulfates, and a stabilizing surfactant consisting of cocoamine betaine. The stabilized foam drilling fluid resists foam breakdown upon drilling cessation, prevents fluid loss to reduce filter cake buildup and increases the carrying capacity of cuttings and other solids. In addition, a foamable drilling fluid is provided including an hydraulic material selected from the group consisting of Portland cement, siliceous material like fumed silica, blast furnace slag and pozzolans such as fly ash. The hydraulic material solidifies the filter cake, reduces the filter cake permeability, and provide better bonding between the filter cake and cement slurry.
摘要翻译：用于诸如深水海上钻井的井操作中的可发泡钻井液，其中不使用立管将流体返回到地表泥浆坑。优选的可发泡钻井流体包括预水泥粘土，例如膨润土，海水，选自α-烯烃磺酸盐，烷基多糖苷，醇硫酸盐，乙氧基化醇硫酸盐的盐和由椰油胺甜菜碱组成的稳定表面活性剂的表面活性剂。稳定的泡沫钻井液在钻井停止时抵抗泡沫破裂，防止流体损失，减少滤饼积聚，增加切屑和其他固体的承载能力。此外，提供了一种可发泡钻井液，其包括选自波特兰水泥，硅质材料如煅制二氧化硅，高炉矿渣和火山灰如飞灰的水硬性材料。液压材料固化滤饼，降低滤饼渗透性，并提供滤饼和水泥浆之间更好的粘结。

3. 发明授权

US5571318A Well cementing methods and compositions for use in cold environments 失效
标题翻译：用于寒冷环境的良好的固井方法和组合物
公开(公告)号：US5571318A
公开(公告)日：1996-11-05
申请号：US521705
申请日：1995-08-31
申请人： James E. Griffith , Patty L. Totten , Bobby L. King , Jiten Chatterji
发明人： James E. Griffith , Patty L. Totten , Bobby L. King , Jiten Chatterji
IPC分类号： C04B7/52 , C04B24/00 , C04B24/16 , C04B28/04 , C09K8/46 , C04B7/02
CPC分类号： C09K8/46 , C04B24/003 , C04B24/163 , C04B28/04 , C04B7/527 , C04B2111/76 , Y02W30/94
摘要： The present invention provides well cementing methods and compositions for use in cold environments which are particularly suitable for cementing conductor strings in deep water offshore wells. The cement compositions are basically comprised of a relatively coarse particulate hydraulic cement mixed with an ultra fine particulate hydraulic cement, sufficient water to form a pumpable slurry and a fluid loss control additive.
摘要翻译：本发明提供了在冷环境中使用的良好的固井方法和组合物，其特别适用于在深水近海井中固井导体串。水泥组合物基本上由与超细颗粒水硬性水泥混合的相当粗糙的颗粒水硬性水泥组成，足够的水形成可泵送浆料和流体损失控制添加剂。

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