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1. 发明授权

US5725060A Mill starting device and method 失效
标题翻译：磨机启动装置和方法
公开(公告)号：US5725060A
公开(公告)日：1998-03-10
申请号：US409246
申请日：1995-03-24
申请人： Curtis G. Blount , Lamar L. Gantt , David D. Hearn , Gregory S. Walz
发明人： Curtis G. Blount , Lamar L. Gantt , David D. Hearn , Gregory S. Walz
IPC分类号： E21B7/06 , E21B29/06 , E21B7/04
CPC分类号： E21B29/06 , E21B7/061
摘要： A mill starting device for use in a pipestring in a wellbore which provides an inclined wall for guiding the mill to a shoulder stop so that when the mill is operated it preferentially bites into the shoulder stop and a method for using the device together with coiled tubing for forming a window in a subsurface well conduit.
摘要翻译：一种用于在井眼中的分支管道中的磨机启动装置，其提供用于将磨机引导至肩部止挡件的倾斜壁，使得当磨机操作时，其优先咬入肩部止动件中，以及将该装置与连续油管一起使用的方法用于在地下井管道中形成窗户。

2. 发明申请

US20100147592A1 Mill-Through Tailpipe Liner Exit 有权
标题翻译：通过尾管的出口
公开(公告)号：US20100147592A1
公开(公告)日：2010-06-17
申请号：US12635353
申请日：2009-12-10
申请人： David D. Hearn , Lamar L. Gantt , Howard Gober
发明人： David D. Hearn , Lamar L. Gantt , Howard Gober
IPC分类号： E21B7/04
CPC分类号： E21B7/061
摘要： A method and apparatus for forming a window in the wall of a tubular wellbore. In one embodiment described herein, a down hole apparatus for forming a window in the wall of a wellbore utilizing a plurality of tubing string sections and a thick tailpipe positioned at the down hole end of a tubing section.
摘要翻译：一种用于在管状井眼的壁中形成窗口的方法和装置。在本文所述的一个实施例中，一种用于在井眼的壁中形成窗口的井下设备，其利用多个管柱段和位于管段的井下端处的厚的尾管。

3. 发明申请

US20100307736A1 Permanent Bypass Whipstock Assembly For Drilling and Completing a Sidetrack Well and Preserving Access to the Original Wellbore 有权
标题翻译：永久性旁路惠斯勒组件用于钻井和完井钻井，并保留进入原始井眼
公开(公告)号：US20100307736A1
公开(公告)日：2010-12-09
申请号：US12796370
申请日：2010-06-08
申请人： David D. Hearn , Lamar L. Gantt , Dan E. Venhaus , John G. Eller
发明人： David D. Hearn , Lamar L. Gantt , Dan E. Venhaus , John G. Eller
IPC分类号： E21B23/03 , E21B7/04
CPC分类号： E21B41/0035 , E21B7/061 , E21B10/00 , E21B29/06 , E21B33/12 , E21B33/16 , E21B43/10
摘要： The present invention relates to drilling lateral wells or sidetrack wells from a primary wellbore to enhance the efficiency and productivity of oil and gas wells.
摘要翻译：本发明涉及从主井眼钻井侧井或侧钻井，以提高油气井的效率和生产率。

4. 发明授权

US08256535B2 Mill-through tailpipe liner exit and method of use thereof 有权
标题翻译：通孔式尾管衬管出口及其使用方法
公开(公告)号：US08256535B2
公开(公告)日：2012-09-04
申请号：US12635353
申请日：2009-12-10
申请人： David D. Hearn , Lamar L. Gantt , Howard Gober
发明人： David D. Hearn , Lamar L. Gantt , Howard Gober
IPC分类号： E21B7/04 , E21B7/08
CPC分类号： E21B7/061
摘要： A method and apparatus for forming a window in the wall of a tubular wellbore. In one embodiment described herein, a down hole apparatus for forming a window in the wall of a wellbore utilizing a plurality of tubing string sections and a thick tailpipe positioned at the down hole end of a tubing section.
摘要翻译：一种用于在管状井眼的壁中形成窗口的方法和装置。在本文所述的一个实施例中，一种用于在井眼的壁中形成窗口的井下设备，其利用多个管柱段和位于管段的井下端处的厚的尾管。

5. 发明授权

US09371694B2 Permanent bypass whipstock assembly for drilling and completing a sidetrack well and preserving access to the original wellbore 有权
标题翻译：用于钻井和完成侧钻井的永久旁路造斜装置组件，并保留进入原始井眼
公开(公告)号：US09371694B2
公开(公告)日：2016-06-21
申请号：US12796370
申请日：2010-06-08
申请人： David D. Hearn , Lamar L. Gantt , Dan E. Venhaus , John G. Eller
发明人： David D. Hearn , Lamar L. Gantt , Dan E. Venhaus , John G. Eller
IPC分类号： E21B7/08 , E21B29/06 , E21B7/06 , E21B41/00
CPC分类号： E21B41/0035 , E21B7/061 , E21B10/00 , E21B29/06 , E21B33/12 , E21B33/16 , E21B43/10
摘要： The present invention relates to drilling lateral wells or sidetrack wells from a primary wellbore to enhance the efficiency and productivity of oil and gas wells.
摘要翻译：本发明涉及从主井眼钻井侧井或侧钻井，以提高油气井的效率和生产率。

6. 发明授权

US06257331B1 Downhole setting tool 有权
标题翻译：井下设定工具
公开(公告)号：US06257331B1
公开(公告)日：2001-07-10
申请号：US09362607
申请日：1999-07-28
申请人： Curtis G. Blount , David D. Hearn
发明人： Curtis G. Blount , David D. Hearn
IPC分类号： E21B2304
CPC分类号： E21B23/06 , E21B23/04
摘要： A downhole assembly for setting a well tool (e.g. packer) comprising a setting tool which has a draw rod made in two portions which are slidably connected to allow relative movement therebetween. The upper portion is releasably latched to the well tool wherein the weight of the well tool is effectively supported by the workstring rather than the draw rod during positioning of the assembly. Upon actuation of the setting tool, the upper portion is released from the well tool thereby allowing movement between the portions to switch the weight of the well tool to the draw rod during the setting of the well tool. By effectively unloading the draw rod during positioning of the assembly, the assembly can be retrieved if necessary without inadvertently setting the well tool or shearing the draw rod.
摘要翻译：一种用于设置井具（例如封隔器）的井下组件，其包括设置工具，该固定工具具有两个可滑动地连接以允许它们之间的相对运动的两个部分制成的拉杆。上部可释放地锁定到井工具，其中井组件的重量在组件的定位期间由工作绳而不是牵引杆有效地支撑。在启动安装工具时，上部部分从井具中释放，从而允许部分之间的移动，以便在钻井工具的设置期间将钻井工具的重量切换到拉杆。通过在组件的定位期间有效卸载拉杆，如果需要，可以取出组件，而不会无意中设置井具或剪切拉杆。

7. 发明授权

US5195591A Permanent whipstock and placement method 失效
标题翻译：永久造斜器和放置方法
公开(公告)号：US5195591A
公开(公告)日：1993-03-23
申请号：US752705
申请日：1991-08-30
申请人： Curtis G. Blount , David D. Hearn
发明人： Curtis G. Blount , David D. Hearn
IPC分类号： E21B7/06 , E21B23/00 , E21B29/06 , E21B33/127 , E21B33/134
CPC分类号： E21B29/06 , E21B23/00 , E21B33/127 , E21B33/134 , E21B7/061
摘要： Coring and other operations may be carried out through a cased wellbore by placing a permanent whipstock having a tool guide surface thereon in the wellbore through the production tubing string and anchoring the whipstock with cement after positioning the whipstock in a predetermined orientation of the guide surface. An underreamer faces off the cement and cuts a pilot bore for guiding a casing cutting tool so that the whipstock guide surface is properly engaged during the casing wall milling and core drilling operations. The whipstock is inserted into the wellbore through a production tubing includes a hydraulic actuator for moving the whipstock laterally after exiting the lower end of the tubing string to assist in supporting the whipstock in the wellbore and to properly orient the guide surface. The actuator is supplied with pressure fluid through a coilable tubing string connected to the whipstock during the insertion and placement process.
摘要翻译：可以通过套管井筒进行取芯和其他操作，其中通过将生产油管柱放置在井眼中的具有工具引导件表面的永久造斜器，并将造斜器固定在引导表面的预定方位上之后用水泥固定。一个扩孔器面向水泥，并切割导向孔，用于引导套管切割工具，使得在套管壁铣和钻芯操作期间，造斜导向面正确接合。造斜器通过生产管道插入井眼，包括用于在离开油管柱的下端之后横向移动造斜器的液压致动器，以帮助将造斜器支撑在井筒中并且适当地定向导向表面。在插入和放置过程中，致动器通过连接到造斜器的可卷绕管柱提供压力流体。

8. 发明授权

US08430187B2 Directional sidetrack well drilling system 有权
标题翻译：定向钻井钻井系统
公开(公告)号：US08430187B2
公开(公告)日：2013-04-30
申请号：US12708266
申请日：2010-02-18
申请人： David D. Hearn
发明人： David D. Hearn
IPC分类号： E21B7/08 , E21B10/00
CPC分类号： E21B7/061 , E21B7/067 , E21B10/26
摘要： Drilling a sidetrack wellbore out of the side of an existing wellbore utilizing a drillable billet having a path formed in the billet to lead a bi-centered drillbit to kick-out from the wellbore and form a sidetrack wellbore. The bi-centered bit is arranged for the lands of the pilot section to follow the path of the billet while the wings of the ream out a portion of the billet and also ream out the earth to form the full dimension sidetrack wellbore. The bi-centered bit is used to drill the sidetrack wellbore to the target zone so that the entire drilling process extends from the existing wellbore to the target zone without a mandatory withdrawal of the drillstring from the wellbore.
摘要翻译：使用具有在坯料中形成的路径的可钻孔的坯料钻出现有井眼侧面的侧钻井，以引导双中心的钻孔从井筒中踢出并形成侧钻井筒。双中心钻头安排在飞行员区域的土地上，以跟随钢坯的路径，同时将机翼的一部分弹出出来，并且还将地弹出，以形成全尺寸侧钻井筒。双中心钻头用于将侧钻井眼钻到目标区域，使得整个钻井过程从现有的井眼延伸到目标区域，而不必将钻柱强制从钻井中撤出。

9. 发明授权

US4674580A Means for reducing bending stresses in drill pipe 失效
标题翻译：减轻钻杆弯曲应力的手段
公开(公告)号：US4674580A
公开(公告)日：1987-06-23
申请号：US770147
申请日：1985-08-27
申请人： Frank J. Schuh , David D. Hearn
发明人： Frank J. Schuh , David D. Hearn
IPC分类号： E21B7/04 , E21B17/10
CPC分类号： E21B17/10 , E21B7/04
摘要： A means for substantially reducing the bending stresses, both tensional and compressional, in a standard-type length of drill pipe as it passes through a section of a wellbore that is deviated from vertical. The tool joints on the ends of drill pipe have outside diameters greater than that of the pipe body which act as supports for the pipe body against the wall of the wellbore in a deviated section. The bending stresses encountered by the drill pipe increase as the distance between these pipe supports increase. In the present invention, stress sleeves are affixed to the outer surface of the pipe body at equally spaced intervals between the tool joints to act as dummy tool joints thereby providing additional pipe supports which substantially reduce the bending stresses in the drill pipe.
摘要翻译：一种用于当标准型长度的钻杆通过穿过从垂直方向偏离的井眼的一部分时，基本上减小张力和压缩的弯曲应力的装置。钻杆末端的工具接头的外径大于管体的外径，该管体用作管体抵靠井眼在偏斜部分的壁上的支撑。钻管遇到的弯曲应力随着这些管支架间距的增加而增加。在本发明中，应力套筒以等间隔的间隔固定到管体的外表面上，以作为虚拟工具接头，从而提供额外的管道支撑件，其基本上减小了钻杆中的弯曲应力。

10. 发明申请

US20100218996A1 DIRECTIONAL SIDETRACK WELL DRILLING SYSTEM 有权
标题翻译：方向边缘井式钻井系统
公开(公告)号：US20100218996A1
公开(公告)日：2010-09-02
申请号：US12708266
申请日：2010-02-18
申请人： David D. Hearn
发明人： David D. Hearn
IPC分类号： E21B7/08 , E21B7/04
CPC分类号： E21B7/061 , E21B7/067 , E21B10/26
摘要： This invention relates to drilling a sidetrack wellbore out of the side of an existing wellbore utilizing a drillable billet having a path formed in the billet to lead a bi-centered drillbit to kick-out from the wellbore and form a sidetrack wellbore. The bi-centered bit is arranged for the lands of the pilot section to follow the path of the billet while the wings of the ream out a portion of the billet and also ream out the earth to form the full dimension sidetrack wellbore. The bi-centered bit is used to drill the sidetrack wellbore to the target zone so that the entire drilling process extends from the existing wellbore to the target zone without a mandatory withdrawal of the drillstring from the wellbore. Tripping time is therefore less and drill time and rig time would inherently be less resulting in lower costs and increased profitability.
摘要翻译：本发明涉及利用具有在坯料中形成的路径的可钻孔坯料将现有井筒的侧面钻出侧钻井筒，以引导双中心钻孔从井筒中踢出并形成侧钻井筒。双中心钻头安排在飞行员区域的土地上，以跟随钢坯的路径，同时将机翼的一部分弹出出来，并且还将地弹出，以形成全尺寸侧钻井筒。双中心钻头用于将侧钻井眼钻到目标区域，使得整个钻井过程从现有的井眼延伸到目标区域，而不必将钻柱强制从钻井中撤出。因此，跳闸时间较短，钻取时间和钻机时间本来会较少，从而降低成本并提高盈利能力。

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