Spindle for mud pulse telemetry applications
AssigneeSchlumberger Technology Corporation
InventorsPaul L. Camwell, David A. Switzer, Anthony R. Dopf, Laura C. Neels-Slingerland
Life of this patent
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Abstract
A spindle for a mud pulse telemetry tool includes a seal section having an outer surface for contacting a lip seal of a spindle housing in which the spindle is mounted; a top section attachable to at least part of a valve assembly for generating mud pulses; and a base section having a proximal end attachable to a drive motor for moving the spindle and a distal end attachable to the top section such that the annular seal is fixed between the top and base sections. The seal section can be made of a ceramic material such as yttrium-stabilized zirconia.
Claims21
A spindle for a mud pulse telemetry tool comprising:
- (a) a seal section having an outer surface for contacting a lip seal of a spindle housing in which the spindle is mounted;
- (b) a top section attachable to at least part of a valve assembly for generating mud pulses;
- and
- (c) a base section having a proximal end attachable to a drive motor for moving the spindle and a distal end attachable to a proximal end of the top section such that the seal section is compressively fixed between the top and base sections whenever the spindle is assembled.
A spindle for a mud pulse telemetry tool comprising:
- (a) a seal section having a ceramic outer surface for contacting a lip seal of a spindle housing in which the spindle is mounted;
- (b) a top section attachable to at least part of a valve assembly for generating mud pulses;
- and
- (c) a base section having a proximal end attachable to a drive motor for moving the spindle and a distal end attachable to a proximal end of the top section such that the seal section is compressively fixed between the top and base sections.
Dependencies are inferred from the claim text.