Downhole Shifting Tool
AssigneeSchlumberger Technology Corporation
InventorsMax E. Spencer, Philip C. Stevenson, Ruben Martinez
Life of this patent
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Abstract
A shifting tool for use in shifting axial position of a shiftable element in a well. The tool comprises a linkage mechanism configured to translate an independent axial force into a dedicated radial force applied to expansive elements thereof. Thus, the elements may radially expand into engagement with the shiftable element free of any substantial axial force imparted thereon. As such, a more discretely controllable shifting actuation may be attained, for example, as directed from an oilfield surface. Indeed, real-time intelligent feedback may also be made available through use of such elements in conjunction with the noted linkage mechanism.
Claims20
A tool configured for engagement of a downhole device profile in a well, the tool comprising:
- an axial actuator;
- a linkage mechanism coupled to said actuator for movement responsive to an axial position thereof;
- and
- a radially expansive element coupled to said mechanism for extending from a body of the tool based on the movement to achieve the engagement.
An assembly for positioning at an oilfield for shifting of a downhole device in a well, the assembly comprising:
- surface equipment for positioning at a surface of the oilfield adjacent the well;
- a tool for the shifting having a linkage mechanism for translating an independent axial force applied thereto into a dedicated radial force in engaging the device;
- and
- a conveyance line coupled to said equipment and said tool.
A method of engaging a shiftable element of a downhole device in a well, the method comprising:
- deploying the a shifting tool to a location of the shiftable element in the well;
- applying an independent axial force to a linkage mechanism of the tool;
- and
- translating the independent axial force into a dedicated radially expansive force to engage expansive elements of the tool with the shiftable element.
Dependencies are inferred from the claim text.