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1. 发明授权

US06286597B1 Shoe track saver and method of use 有权
标题翻译：鞋跟踪保护及使用方法
公开(公告)号：US06286597B1
公开(公告)日：2001-09-11
申请号：US09290656
申请日：1999-04-12
申请人： David G. Forsyth , Roddy W. McLeod , Stephen H. Lewis
发明人： David G. Forsyth , Roddy W. McLeod , Stephen H. Lewis
IPC分类号： E21B2700
CPC分类号： E21B33/14
摘要： An inline component for a liner assembly, usable particularly in deviated wellbores, is disclosed. The component involves a series of offset passages to create sufficient turbulence in the circulating cement during a cementing job so as to eliminate the phenomenon of roping where there is inefficient displacement of mud with the circulating cement. The multi-component inline device has peripheral seals to prevent leakpaths along the inside wall of the casing being cemented. The offset flow passages are presented in individualized components which are rotationally locked to each other and have peripheral sealing devices. The stack of components is retained within the casing to prevent its longitudinal movement during the pumping of cement. The preferred materials are soft metallics which facilitate drilling out if required. The interlocking nature of the components also eliminates relative rotation to facilitate drill-out.
摘要翻译：公开了一种用于衬套组件的在线部件，其特别适用于偏斜的井筒。该部件涉及一系列偏移通道，以在固井作业期间在循环水泥中产生足够的湍流，以便消除在循环水泥中泥浆的低效位移的罗纹现象。多组件在线设备具有外围密封件，以防止沿着外壳的内壁粘合的泄漏路径。偏移流路呈现在彼此旋转锁定并具有周边密封装置的各个部件中。这些组件被保持在壳体内以防止其在泵送水泥期间的纵向移动。优选的材料是软金属，如果需要便于钻出。组件的互锁性质也消除了相对旋转以促进钻孔。

2. 发明授权

US6012526A Method for sealing the junctions in multilateral wells 失效
标题翻译：密封多边井口路口的方法
公开(公告)号：US6012526A
公开(公告)日：2000-01-11
申请号：US909777
申请日：1997-08-12
申请人： Steven L. Jennings , James Kenneth Whanger , Arne Larsen , John L. Baugh , Brian Wood , Christopher L. Gann , Darrin Willauer , Mark W. Brockman , David G. Forsyth , Gerald D. Lynde , Douglas J. Murray , Edwin Schubrick , James K. Jackson , William K. Brown
发明人： Steven L. Jennings , James Kenneth Whanger , Arne Larsen , John L. Baugh , Brian Wood , Christopher L. Gann , Darrin Willauer , Mark W. Brockman , David G. Forsyth , Gerald D. Lynde , Douglas J. Murray , Edwin Schubrick , James K. Jackson , William K. Brown
IPC分类号： E21B7/06 , E21B23/12 , E21B29/06 , E21B41/00 , E21B43/10 , E21B43/11 , E21B43/114 , E21B43/119
CPC分类号： E21B23/002 , E21B29/06 , E21B41/0042 , E21B43/10 , E21B7/061
摘要： Junctions in multilateral well structures are sealed by employing a variety of degrees of premachined components and a variety of sealing embodiments, including casing segments having premachined windows, side pocket members which are adapted to reside within the string during run in and move laterally to the deployed position, woven members, cement filled ECPs, etc. Also disclosed is a downhole milling device which cuts a window in a casing segment or other material based upon a predetermined geometric pattern imposed upon the cutting tool by an integral template.
摘要翻译：通过采用多种程度的预先加工的部件和各种密封实施例，包括具有预加工窗口的套管段，侧袋部件，其适于在运行期间驻留在管柱内并横向移动到所部署的部件位置，编织构件，水泥填充的ECP等。还公开了一种井下铣削装置，其基于通过整体模板施加在切割工具上的预定几何图案，在壳体段或其它材料中切割窗口。

3. 发明授权

US6029748A Method and apparatus for top to bottom expansion of tubulars 失效
标题翻译：管状顶部至底部膨胀的方法和装置
公开(公告)号：US6029748A
公开(公告)日：2000-02-29
申请号：US943954
申请日：1997-10-03
申请人： David G. Forsyth , Robert C. Ross
发明人： David G. Forsyth , Robert C. Ross
IPC分类号： E21B43/10 , E21B29/00
CPC分类号： E21B43/105
摘要： An apparatus and method are disclosed that allow for downhole expansion of long strings of rounded tubulars, using a technique that expands the tubular from the top to the bottom. The apparatus supports the tubular to be expanded by a set of protruding dogs which can be retracted if an emergency release is required. A conically shaped wedge is driven into the top of the tubing to be expanded. After some initial expansion, a seal behind the wedge contacts the expanded portion of the tube. Further driving of the wedge into the tube ultimately brings in a series of back-up seals which enter the expanded tube and are disengaged from the driving mandrel at that point. Further applied pressure now makes use of a piston of enlarged cross-sectional area to continue the further expansion of the tubular. When the wedge has fully stroked through the tubular, it has by then expanded the tubular to an inside diameter larger than the protruding dogs which formerly supported it. At that point, the assembly can be removed from the wellbore. An emergency release, involving dropping a ball and shifting a sleeve, allows, through the use of applied pressure, the shifting of a sleeve which supports the dog which in turn supports the tubing to be expanded. Once the support sleeve for the dog has shifted, the dog can retract to allow removal of the tool, even if the tube to be expanded has not been fully expanded.
摘要翻译：公开了一种允许使用将管从顶部扩展到底部的技术的长串圆筒形管的井下扩张的装置和方法。该装置支撑通过一组突出的狗扩大的管状物，如果需要紧急释放，该突出的狗可以缩回。锥形楔形件被驱动到待膨胀的管道的顶部。在一些初始膨胀之后，楔形物后面的密封件接触管的扩张部分。将楔形物进一步驱动到管中最终导致一系列后退密封件进入膨胀管并且在该点处与驱动型心轴分离。进一步施加的压力现在使用具有扩大横截面面积的活塞来继续管状物的进一步膨胀。当楔形物已经完全穿过管状物时，它已经将管状物膨胀到比之前支撑它的突出的狗的内径更大。在这一点上，组件可以从井筒中移除。紧急释放，包括放下球和移动套筒，允许通过使用施加的压力移动支撑狗的套筒，其又支撑要扩张的管道。一旦用于狗的支撑套筒已经移动，即使要扩张的管未被完全膨胀，狗可以缩回以允许移除该工具。

4. 发明授权

US5875847A Multilateral sealing 失效
标题翻译：多边密封
公开(公告)号：US5875847A
公开(公告)日：1999-03-02
申请号：US897929
申请日：1997-07-21
申请人： David G. Forsyth
发明人： David G. Forsyth
IPC分类号： E21B7/08 , E21B41/00 , E21B43/14
CPC分类号： E21B41/0042
摘要： The invention comprises a casing tool having a lateral root premachined therein and plugged with cement. A wear bushing is also positioned within the entrance to the root from the uphole side of the tool to prevent distortion or even destruction of the root while the lateral is being drilled. Subsequent to the lateral being drilled the wear bushing is removed and a liner is run which is then sealed to the bore of the root with conventional sealing techniques, thus avoiding the need to seal oval holes.
摘要翻译：本发明包括一种套管工具，其具有预先加入其中的侧根，并用水泥塞住。磨损衬套也从工具的井上侧定位在根部的入口内，以防止在钻出侧面时根部变形甚至破坏。在侧面被钻孔之后，去除耐磨衬套，并且运行衬套，然后使用常规的密封技术将其密封到根部的孔，从而避免了密封椭圆形孔的需要。

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