Downhole tractor with wheel assembly
AssigneeHalliburton Energy Services, Inc.
InventorSimon Whye Kwong Wai
Life of this patent
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Abstract
A downhole tractor assembly operable in a wellbore that includes a tractor body and a tractor wheel assembly. The tractor wheel assembly includes a tractor wheel with teeth around a circumference of the wheel and grooves between adjacent teeth. The grooves include a profile in a plane parallel with the axis of the wheel. Also, each tooth includes an outer face with face grooves on each side of the outer face that extend less than across the wheel.
Claims20
A downhole tractor assembly operable in a wellbore, comprising:
- a tractor body;
- and
- a tractor wheel assembly comprising a wheel comprising teeth around a circumference of the wheel and grooves between adjacent teeth that include an arced profile in a plane parallel with an axis of the wheel, and wherein each tooth comprises an outer face comprising face grooves on each side of the outer face and that extend less than across the wheel.
A method of operating a downhole tractor in a wellbore, comprising:
- engaging a wheel of the downhole tractor with a wall of the wellbore to grip the wall;
- rotating the wheel to engage outer faces of teeth around a circumference of the wheel and covey the downhole tractor within the wellbore;
- displacing debris, as the wheel rotates, out from the wheel through grooves between adjacent teeth that include an arced profile parallel an axis of the wheel;
- and
- displacing debris, as the wheel rotates, out from each tooth outer face through face grooves on each side of the outer face that extend less than across the wheel.
A downhole tractor wheel for use with a downhole tractor in a wellbore, comprising:
- teeth around a circumference of the wheel;
- and
- grooves between adjacent teeth that include an arced profile parallel with an axis of the wheel;
- and
- wherein each tooth includes an outer face including face grooves on each side of the outer face and that extend less than across the wheel.
Dependencies are inferred from the claim text.