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1. 发明授权

US4151098A Acidizing subterranean well formations containing deposits of metal compounds 失效
标题翻译：酸化含有金属化合物沉积物的地下井层
公开(公告)号：US4151098A
公开(公告)日：1979-04-24
申请号：US866983
申请日：1978-01-05
申请人： Walter R. Dill , John A. Knox
发明人： Walter R. Dill , John A. Knox
IPC分类号： C09K8/528 , E21B43/27
CPC分类号： C09K8/528 , Y10S507/934
摘要： Methods of acidizing a subterranean well formation, acidizing compositions and sequestering additives for preventing the precipitation of metal compounds in the formation.
摘要翻译：酸化地层井的方法，酸化组合物和螯合添加剂，用于防止地层中金属化合物的沉淀。

2. 发明授权

US5295542A Well gravel packing methods 失效
标题翻译：井砾石包装方法
公开(公告)号：US5295542A
公开(公告)日：1994-03-22
申请号：US956512
申请日：1992-10-05
申请人： R. Clay Cole , John A. Knox
发明人： R. Clay Cole , John A. Knox
IPC分类号： E21B43/04
CPC分类号： E21B43/04
摘要： Improved methods of placing a gravel pack in a wellbore and in one or more perforations extending from the wellbore into a producing zone are provided. The methods basically comprise the steps of placing a screen in the wellbore adjacent the perforations, and then injecting a low viscosity carrier liquid having a particulate solid pack material suspended therein into the space between the screen and the walls of the wellbore containing the perforations. The pack material has a specific gravity substantially the same as the specific gravity of the carrier liquid whereby a low viscosity carrier liquid can be utilized and the carrier liquid-pack material suspension contains a high loading of pack material.
摘要翻译：提供了将砾石包装放置在井筒中以及从井筒延伸到生产区域的一个或多个穿孔中的改进方法。这些方法基本上包括以下步骤：将屏幕放置在靠近穿孔的井眼中，然后将悬浮在其中的具有颗粒状固体包装材料的低粘度载液注入到屏幕与包含穿孔的井眼的壁之间的空间中。包装材料具有与载体液体的比重基本相同的比重，由此可以使用低粘度载液，并且载液包装材料悬浮液含有高负荷的包装材料。

3. 发明授权

US4961466A Method for effecting controlled break in polysaccharide gels 失效
标题翻译：在多糖凝胶中进行受控断裂的方法
公开(公告)号：US4961466A
公开(公告)日：1990-10-09
申请号：US299699
申请日：1989-01-23
申请人： Ronald E. Himes , John A. Knox
发明人： Ronald E. Himes , John A. Knox
IPC分类号： C09K8/62 , C09K8/68 , E21B43/26
CPC分类号： E21B43/26 , C09K8/62 , C09K8/685 , Y10S507/921
摘要： A controllable breaker for use in viscosified fluids utilized in the treatment of subterranean formations comprising a low molecular weight condensation product of hydroxyacetic acid with up to 15 wt % cocondensing compounds containing other hydroxy-, carboxylic-acid, or hydroxycarboxylic-acid moieties. The condensation product has an average molecular weight in the range of from about 200 to about 4000, a generally crystalline structure, a melting point above about 100.degree. C. and is substantially insoluble in the viscosified fluid at ambient temperatures. The breaker is admixed with the viscosified fluid in an amount sufficient to effect controlled breaking of the fluid upon being heated to a temperature above 70.degree. F. within a subterranean formation.
摘要翻译：用于处理地下地层的粘稠流体中的可控断路器，其包含羟基乙酸与含有其它羟基，羧酸或羟基羧酸部分的至多15重量％缩聚化合物的低分子量缩合产物。缩合产物的平均分子量为约200至约4000，通常为结晶结构，熔点高于约100℃，并且在环境温度下基本上不溶于稠化流体。断裂器与粘稠流体混合，其量足以在加热到地下地层内高于70°F的温度时实现流体的受控断裂。

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