Drill Bit with Adjustable Side Force
AssigneeBaker Hughes Incorporated
InventorsWolfgang E. Herberg, Matthias Meister
Life of this patent
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Abstract
A drill bit according to one embodiment includes a center member configured to rotate at a first speed and an outer member disposed outside the center member, wherein the outer member is configured to rotate at a second speed. The drill bit also includes a first cutter disposed on the center member and a second cutter disposed on the outer member, wherein the first speed and second speeds are configured to control a resultant side force of the drill bit.
Claims21
A drill bit, comprising:
- a center member configured to rotate at a first speed;
- an outer member disposed outside the center member, wherein the outer member is configured to rotate at a second speed;
- a first cutter disposed on the center member;
- and
- a second cutter disposed on the outer member, wherein the first speed and second speeds are configured to control a resultant side force of the drill bit.
A method for making a drill bit, comprising:
- providing a center bit configured to rotate at a first speed;
- and
- providing an outer bit disposed outside the center bit, wherein the outer bit is configured to rotate at a second speed, wherein the first speed and second speeds are configured to control a resultant side force of the drill bit.
An apparatus for use in drilling of a wellbore, comprising:
- a drilling assembly that has a drill bit attached to an end thereof, the drill bit comprising:
- a center bit configured to rotate at a first speed;
- and
- an outer bit disposed outside the center bit, wherein the outer bit is configured to rotate at a second speed, wherein the first speed and second speeds are configured to control a resultant side force of the drill bit.
A method of drilling a wellbore, comprising:
- conveying a drill string in the wellbore, the drill string including a drill bit including a first drill bit in a second drill bit;
- drilling the wellbore by rotating the first drill bit at a speed that differs from the rotational speed of the second drill bit.
Dependencies are inferred from the claim text.