Modular anti-rotation drilling systems and methods
| DWPI Title: Modular anti-rotation device for preventing rotation with respect to central axis of drilling tool in borehole, has cutting insert connected at distal end of upper and lower yoke assemblies and movable in radial direction of device |
| Abstract: A modular anti-rotation device for preventing rotation with respect to the central axis of a drilling tool in a borehole and for producing a notch in a borehole surface. The anti-rotation device includes an upper fixture portion and a lower fixture portion in axial alignment. The upper fixture portion and the lower fixture portion are connected by yoke assemblies. Each yoke assembly is connected to the fixture portion and fixture portion at one end, and forming an articulated joint of the upper yoke assembly and the lower yoke assembly at a distal end opposite the first end. A roller is connected at each joint, connecting the upper and lower yoke assemblies. The rollers engage vertically with a borehole surface, the rollers travelling axially, as a drill shaft penetrates into the borehole, the rollers simultaneously preventing radial movement of the anti-rotation device and prevent rotation with respect to the central axis of the borehole. |
| Use: Modular anti-rotation device for preventing rotation with respect to central axis of drilling tool in borehole. Can also be used in drilling borehole in earth surface formation. |
| Advantage: The device allows the weight-on-bit required for drilling to be applied while also managing the drill string twist that leads to drilling dysfunctions such as stick-slip. The coulomb friction at the interface allows torque to be reacted without any rotation of the device or the drill pipe above the device. The device is able to adapt to and function in different borehole sizes because the links automatically expand under load until they contact the borehole wall. |
| Novelty: The modular device (10) comprises an upper fixture and a lower fixture which are arranged opposite to each other. The upper fixture is attached to a drill pipe that applies a vertical axial force upon the upper fixture to allow the fixture to move toward the lower fixture. The fixtures are connected by two yoke assemblies (16), where each yoke assembly is connected to upper and lower fixture portions at an end. A cutting insert is connected at each distal end of the assemblies, and connects the assemblies. The insert is movable in radial direction of the device in a borehole has a diameter. |
| Filed: 8/26/2021 |
| Application Number: US17412397A |
| Tech ID: SD 14365.1 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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