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公开(公告)号：US5984007A
公开(公告)日：1999-11-16
申请号：US5635
申请日：1998-01-09
IPC分类号： E21B33/12 , E21B33/129 , E21B23/00
CPC分类号： E21B33/1208 , E21B33/1204 , E21B33/1293
摘要： A slip element installable about a downhole tool apparatus for use in anchoring a downhole tool in a wellbore. The slip element has at least one slip button made of a metallic-ceramic composite material comprising an effective percentage by weight of a preselected titanium compound. The composite makes the slip button resistant to chipping upon setting but has favorable drillability characteristics upon drilling the downhole tool from a wellbore. The slip element may include at least one slip element made of a non-metallic material such as a laminated nonmetallic composite material. Preferably at least one slip button is made of a metallic-ceramic composite material comprising less than about 75 percent by weight of titanium carbide having a density ranging between about 5 to 7 grams per cubic centimeter. Preferably, the slip button is cylindrically shaped and is installed in at least one slip element at a preselected angle and extends outwardly at a preselected distance from a face of the slip element.
摘要翻译： 围绕井下工具装置安装的滑动元件，用于将井下工具锚定在井眼中。 滑动元件具有由金属 - 陶瓷复合材料制成的至少一个滑动按钮，其包含有效重量的预选钛化合物。 复合材料使得滑动按钮在设置时耐碎裂，但是在从井筒钻井下工具时具有良好的钻孔特性。 滑动元件可以包括由诸如层压的非金属复合材料之类的非金属材料制成的至少一个滑动元件。 优选地，至少一个滑扣由金属陶瓷复合材料制成，其包含小于约75重量％的密度在约5至7克/立方厘米之间的碳化钛。 优选地，滑动按钮是圆柱形的，并且以预定角度安装在至少一个滑动元件中，并且以与滑动元件的表面预选的距离向外延伸。
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公开(公告)号：US5839515A
公开(公告)日：1998-11-24
申请号：US888719
申请日：1997-07-07
IPC分类号： E21B33/12 , E21B33/129
CPC分类号： E21B33/1204 , E21B33/1293
摘要： Method and apparatus particularly suitable for tools having a center mandrel, a plurality of slip segments disposed in an initial position around the mandrel and requiring a retaining means for holding the slip segments in an initial position prior to setting the tool downhole. The subject retaining system is characterized by at least one frangible retaining band extending at least partially around the slips and at least one elastic O-ring extending at least partially around the slips. Preferably the retaining band is non-metallic and both the retaining band and the elastic O-ring reside in a common groove formed in the outer face of each slip. The groove further preferably has an L-shape due to an under cut in the groove to form a lip extending over the retaining band. Hardened inserts may be molded into the slips. The inserts may be metallic, such as hardened steel, or non-metallic, such as a ceramic material.
摘要翻译： 特别适合于具有中心心轴的工具的方法和设备，设置在围绕心轴的初始位置的多个滑动段，并且需要在将工具设置在井下之前将滑动段保持在初始位置的保持装置。 主体保持系统的特征在于至少一个脆弱的保持带至少部分地围绕卡瓦延伸，并且至少一个弹性O形环至少部分地围绕卡瓦延伸。 优选地，保持带是非金属的，并且保持带和弹性O形环都位于形成在每个滑动件的外表面中的公共槽中。 由于凹槽中的下切口，凹槽更优选具有L形，以形成在保持带上延伸的唇缘。 硬化的刀片可以模制成滑块。 插入件可以是金属的，例如硬化钢，或非金属的，例如陶瓷材料。
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3.发明授权
公开(公告)号：US5701959A
公开(公告)日：1997-12-30
申请号：US626193
申请日：1996-03-29
IPC分类号： E21B33/12 , E21B33/129
CPC分类号： E21B33/1293 , E21B33/1216
摘要： An improved downhole tool apparatus and method for limiting the extrusion of packer element seals of packers and bridge plugs which utilize segmented packer retaining shoes when such tools are of larger diameters, or when used at elevated differential pressures or elevated temperatures. Preferably the segmented packer shoes incorporate a plurality of gap-bridging disks to limit if not eliminate unwanted extrusion of the packer elements upon setting of the tool. By making the packer element shoes and disks of non-metallic material, the subject invention increases the ability to drill or mill downhole tools out of a well bore in less time than it would take with using conventional or non-conventional drilling or milling techniques or equipment while providing enhanced high temperature and high pressure performance, especially in larger nominal outside diameter downhole tools.
摘要翻译： 一种改进的井下工具装置和方法，用于限制包装机和桥塞的封隔器密封件的挤出，当这种工具具有较大的直径时，或当在升高的压差或升高的温度下使用时，其使用分段的封隔器保持鞋。 优选地，分段封隔器鞋包括多个间隙桥接件，以限制如果在设置工具时不消除打包器元件的不期望的挤压。 通过制造包装材料鞋和非金属材料盘，本发明增加了在比使用传统的或非常规的钻孔或铣削技术所需的时间更短的时间内将井下工具钻出井下工具的能力，或者 设备，同时提供增强的高温和高压性能，特别是在较大的额定外径井下工具。
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