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    • 2. 发明授权
    • Self-aligning open-hole tractor
    • 自调心露孔拖拉机
    • US08770303B2
    • 2014-07-08
    • US11936320
    • 2007-11-07
    • Franz AguirreTodor K. SheiretovKeith R. Nelson
    • Franz AguirreTodor K. SheiretovKeith R. Nelson
    • E21B23/00
    • E21B4/18E21B17/1078E21B2023/008
    • A downhole tractor assembly that is configured for open-hole applications and of a self-aligning nature. The self-aligning nature of the assembly is effectuated through a tractor portion which is rotable about an axis of an elongated body of the assembly independent of a separate centralizing portion of the assembly. That is, the tractor portion, configured for interfacing an open-hole well wall of potentially irregular morphology, is independently rotable so as to maintain a position of substantially optimized driving friction at the interface during tractoring. Maintenance of optimized driving friction in this manner may occur irrespective of the orientation of the centralizing portion of the assembly.
    • 一种井下拖拉机组件,其配置用于露天应用和自对准性质。 组件的自对准性通过拖拉机部分实现,拖拉机部分可围绕组件的细长主体的轴线旋转,而与组件的单独集中部分无关。 也就是说,构造成用于接合具有潜在不规则形态的露天井壁的拖拉机部分是独立可旋转的,以便在牵引过程中保持在界面处的基本上优化的驱动摩擦的位置。 以这种方式维持优化的驱动摩擦可以不考虑组件的中心部分的取向而发生。
    • 6. 发明申请
    • Self-Aligning Open-Hole Tractor
    • 自对准露孔拖拉机
    • US20080196901A1
    • 2008-08-21
    • US11936320
    • 2007-11-07
    • Franz AguirreTodor K. SheiretovKeith R. Nelson
    • Franz AguirreTodor K. SheiretovKeith R. Nelson
    • E21B4/00
    • E21B4/18E21B17/1078E21B2023/008
    • A downhole tractor assembly that is configured for open-hole applications and of a self-aligning nature. The self-aligning nature of the assembly is effectuated through a tractor portion which is rotable about an axis of an elongated body of the assembly independent of a separate centralizing portion of the assembly. That is, the tractor portion, configured for interfacing an open-hole well wall of potentially irregular morphology, is independently rotable so as to maintain a position of substantially optimized driving friction at the interface during tractoring. Maintenance of optimized driving friction in this manner may occur irrespective of the orientation of the centralizing portion of the assembly.
    • 一种井下拖拉机组件,其配置用于露天应用和自对准性质。 组件的自对准性通过拖拉机部分实现,拖拉机部分可围绕组件的细长主体的轴线旋转,而与组件的单独集中部分无关。 也就是说,构造成用于接合具有潜在不规则形态的露天井壁的拖拉机部分是独立可旋转的,以便在牵引过程中保持在界面处的基本上优化的驱动摩擦的位置。 以这种方式维持优化的驱动摩擦可以不考虑组件的中心部分的取向而发生。
    • 8. 发明授权
    • System and method for unsticking a tool stuck in a wellbore
    • 用于取消粘贴在井筒中的工具的系统和方法
    • US07661477B2
    • 2010-02-16
    • US11278294
    • 2006-03-31
    • Todor K. SheiretovMatthew BillinghamWayne Fulin
    • Todor K. SheiretovMatthew BillinghamWayne Fulin
    • E21B31/107
    • E21B31/00E21B17/1021E21B23/01
    • An unsticking assembly for releasing a tool that is stuck in a wellbore including a first anchor actuatable between an engaging position wherein the first anchor engages a wall of the wellbore and a retracted position wherein the first anchor does not engage the wall; a second anchor actuatable between an engaging position wherein the second anchor engages a wall of the wellbore and a retracted position wherein the second anchor does not engage the wall; and a control module in connection with the first and second anchor to selectively actuate each anchor between the engaged and retracted positions. The assembly is adapted for positioning in the wellbore and in connection with the tool when the tool is stuck in the wellbore. The assembly may be a stand-alone assembly that is connectable to the tool after the tool is stuck in the wellbore. The assembly may include the wellbore tool as an interconnected element.
    • 用于释放粘贴在井眼中的工具的脱模组件,所述工具包括第一锚固件,所述第一锚固件可在其中所述第一锚固件接合所述井眼的壁的接合位置与所述第一锚固件不接合所述壁的缩回位置之间起动; 第二锚固件可在接合位置之间致动,其中所述第二锚固件接合所述井筒的壁和缩回位置,其中所述第二锚固件不接合所述壁; 以及与所述第一和第二锚固件连接的控制模块,以选择性地致动所述接合位置和缩回位置之间的每个锚固件。 当工具卡在井筒中时,组件适于定位在井眼中并与工具相关联。 组件可以是在工具卡在井筒中之后可连接到工具的独立组件。 组件可以包括作为互连元件的井眼工具。