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31. 发明授权

US06554069B1 Methods of removing water-based drilling fluids and compositions 有权
标题翻译：去除水基钻井液和组合物的方法
公开(公告)号：US06554069B1
公开(公告)日：2003-04-29
申请号：US10219642
申请日：2002-08-15
申请人： Jiten Chatterji , Sears T. Dealy , Ronald J. Crook
发明人： Jiten Chatterji , Sears T. Dealy , Ronald J. Crook
IPC分类号： E21B2100
CPC分类号： C09K8/52 , Y10S507/927 , Y10S507/928
摘要： The present invention provides methods and compositions for removing a water-based drilling fluid from surfaces in a well bore and leaving the surfaces water-wet. A method of the invention basically comprises the following steps. A water-based drilling fluid removal solution comprised of water and a mixture of a sulfonated kraft lignin salt and an N-methyl-N-oleyltaurine salt dissolved therein is provided. The drilling fluid is displaced from the well bore and the well bore surfaces are contacted with the removal solution to thereby remove the drilling fluid from the surfaces and make the surfaces water-wet.
摘要翻译：本发明提供了用于从井眼中的表面去除水基钻井液并使表面变湿的方法和组合物。本发明的方法基本上包括以下步骤。提供了一种由水和磺化硫酸盐木质素盐和N-甲基-N-油基牛磺酸盐的混合物组成的水基钻井液去除溶液。钻井液从井眼位移，井眼表面与去除溶液接触，从而从表面上除去钻井液，使表面变湿。

32. 发明授权

US06308777B2 Cementing wells with crack and shatter resistant cement 有权
标题翻译：水泥井具有裂缝和抗碎水泥
公开(公告)号：US06308777B2
公开(公告)日：2001-10-30
申请号：US09417551
申请日：1999-10-13
申请人： Jiten Chatterji , Roger S. Cromwell , Ronald J. Crook , Frank Zamora
发明人： Jiten Chatterji , Roger S. Cromwell , Ronald J. Crook , Frank Zamora
IPC分类号： E21B3314
CPC分类号： C04B28/02 , C04B16/0625 , C04B2111/343 , C09K8/46 , C04B20/1018 , C04B22/0026
摘要： Improved cement compositions and methods of cementing subterranean zones penetrated by well bores are provided. In accordance with the methods, a crack and shatter resistant cement composition is introduced into a subterranean zone by way of the well bore penetrating it comprised of a hydraulic cement, sufficient hydrophilic fibers to make the cement composition crack and shatter resistant upon setting and sufficient water to form a pumpable slurry. Thereafter, the cement composition is allowed to set in the subterranean zone.
摘要翻译：提供了改进的水泥组合物和井眼穿透的地下区域固井方法。根据这些方法，将裂缝和粉碎的水泥组合物通过渗透包含水硬性水泥的足够的亲水纤维的井眼引入地下区域，以使水泥组合物在凝固时具有抗裂裂和抗水分的能力以形成可泵送浆料。此后，将水泥组合物置于地下区域。

33. 发明授权

US5533570A Apparatus for downhole injection and mixing of fluids into a cement slurry 失效
标题翻译：用于井下注射和将流体混合到水泥浆中的装置
公开(公告)号：US5533570A
公开(公告)日：1996-07-09
申请号：US372546
申请日：1995-01-13
申请人： Steven G. Streich , Ronald J. Crook , Richard R. Jones
发明人： Steven G. Streich , Ronald J. Crook , Richard R. Jones
IPC分类号： E21B27/02 , E21B33/16 , E21B47/09
CPC分类号： E21B47/09 , E21B27/02 , E21B33/16
摘要： An apparatus for downhole injection and mixing of fluids into a cement slurry. The apparatus includes embodiments which either carry a fluid to the proper injection point in a wellbore or maintain it at the proper injection point until activated. In a first embodiment, the apparatus is characterized as a cementing plug having a fluid holding chamber therein. When the plug is pumped downwardly in the wellbore, the fluid in the chamber is flowed out of the chamber and mixed with the cement slurry by a venturi effect. In a second embodiment, the apparatus is characterized by a casing portion having a fluid holding chamber therein. A solenoid valve controls communication of the chamber with the well annulus, and fluid flow through the well annulus causes the fluid in the chamber to be flowed outwardly by a venturi effect. The second embodiment includes a casing shoe disposed below the fluid holding chamber. A third embodiment is disclosed which is substantially the same as the second embodiment except that it utilizes a casing cementing valve rather than a casing shoe. Methods of utilizing the apparatus to cement a well casing and mix a fluid, such as an accelerant, with the cement slurry are also disclosed.
摘要翻译：用于井下注射和将流体混合到水泥浆中的装置。该装置包括将流体运送到井眼中的适当注入点或将其保持在适当的注入点直到被激活的实施例。在第一实施例中，该装置的特征在于其中具有流体保持室的固井塞。当塞子在井筒中向下泵送时，腔室中的流体从腔室中流出并与水泥浆料一起通过文丘里效应混合。在第二实施例中，该装置的特征在于其中具有流体保持室的壳体部分。电磁阀控制室与井环的连通，并且通过井环的流体流动导致室中的流体向外流过文丘里效应。第二实施例包括设置在流体保持室下方的套管靴。公开了与第二实施例基本相同的第三实施例，除了它使用套管固定阀而不是套管鞋。还公开了利用该装置来水泥井套管并将诸如促进剂的流体与水泥浆混合的方法。

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