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US 2013/0199858 A1Published application
Keyseat Wiper
OwnerSheldon Hanseninventor
Life of this patent
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Abstract
Embodiments of keyseat wipers for use in drilling processes, as well as methods for making and using such keyseat wipers, are described herein. Embodiments of keyseat wipers can include changing cross-sections and a relief sections that permit cut materials to pass by the keyseat wipers, reducing the possibility of a drill string with keyseat wipers from binding in a curved hole when being retrieved.
Claims3
A keyseat wiper for placement in a drill string, the keyseat wiper comprising:
- a first tapered section tapering from a first diameter to a second larger diameter;
- a wiper section having the second larger diameter;
- a second tapered section tapering from the second larger diameter to the first diameter;
- and
- a reduced section in the wiper section, the reduced section having a diameter smaller than the second larger diameter.
2 more elements
Dependencies are inferred from the claim text.