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US 2011/0079433 A1Published application
Pump-in seal
AssigneeLongyear TM, Inc.
InventorsChristopher L. Drenth, George Iondov, George Ibrahim
Life of this patent
Estimating the term…
Abstract
An assembly may be disposed within a drill string. The assembly may be moved within and along the drill string using hydraulic pressure. A core sample may be collected within the assembly, and the assembly may be retrieved to obtain the core sample. The assembly may include a seal that may be configured to form a seal with different inner diameters of a variable-diameter drill rod of the drill string.
Claims29
An apparatus comprising:
- a first seal including:
- a central core;
- and
- a lip spaced apart from the central core, the lip including:
- a projection configured to form a seal with different inner diameters of a variable-diameter drill rod.
2 more elements
A method comprising:
- disposing an inner tube assembly within a drill string, the drill string including a variable-diameter drill rod, the inner tube assembly including:
- a head assembly;
- and
- a first seal including:
- a central core including a passageway receiving at least a portion of the head assembly;
- and
- a lip spaced apart from the central core, the lip including a projection configured to form a seal with different inner diameters of the variable-diameter drill rod.
4 more elements
A method for use in a drilling process, the method comprising:
- disposing a first seal within a drill string, the drill string including a variable-diameter drill rod, the first seal including:
- a first seal including a projection configured to form a seal with different inner diameters of the variable-diameter drill rod;
- and
- using hydraulic pressure to move the first seal from a first position within the drill string to a second position within the drill string.
1 more element
A seal for a head assembly of a core barrel assembly, the seal comprising:
- a central core;
- and
- a lip spaced apart from the central core, the lip including:
- a projection configured to form a seal with different inner diameters of a variable-diameter drill rod.
1 more element
Dependencies are inferred from the claim text.