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US 2010/0139912 A1Published application
Drill String Suspension
OwnerRoger Pfahlert, Gregory Donald Westinventors
Life of this patent
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Abstract
Vertical and/or directional drilling apparatus where compliant support air bag, magnetic or the like) is provided for a vibrational head and drive assembly that carries the drill string. With the vibrational head having a shuttle from which vibration is not directly taken and with the compliant support allowing pull back in the directional mode several advantages arise.
Claims24
A vibrational apparatus comprising or including
- a support,
- a vibrational head selectively operable to provide a vibrational output, and
- apparatus or an assembly (hereafter “assembly”) to receive the vibrational output directly or indirectly from said vibrational head,
- wherein said vibrational head and the directly or indirectly connected assembly to receive the vibrational output is flotably located relative to, yet is carriable or carried by, said support.
1 more element
A drilling apparatus comprising or including
- a support, and
- a vibrational head adapted to be connected directly or indirectly to a drill string so as to both carry the drill string as a dangling assembly and to provide axial vibration thereinto;
- and optionally a drive to rotate such a drill string when connected;
- and optionally, a said drill string directly or indirectly connected to or connectable to said vibrational head so as selectively to be vibrated thereby and, when so connected, selectively adapted to be rotated by said drive,
- wherein said vibrational head and any directly or indirectly connected drill string is flotably located relative to, yet is carriable or carried by, said support.
2 more elements
(canceled)
(canceled)
Dependencies are inferred from the claim text.