NOV. has filed a patent for a downhole motor used in directional drilling. The motor includes a driveshaft assembly, a bearing assembly, a bend adjustment assembly, a lock piston, hydraulic pumps, and an electronics package. The lock piston can lock the bend setting of the motor, while the hydraulic pumps can unlock it. The electronics package indicates the bend setting. GlobalData’s report on NOV gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on NOV, Fall risk prediction was a key innovation area identified from patents. NOV's grant share as of September 2023 was 60%. Grant share is based on the ratio of number of grants to total number of patents.
A downhole motor for directional drilling with adjustable bend
A recently filed patent (Publication Number: US20230279728A1) describes a downhole motor for directional drilling. The motor includes a driveshaft assembly with a rotatable driveshaft housed within a driveshaft housing. A bearing assembly with a rotatable bearing mandrel is also included, which can be coupled with a drill bit. The motor features a bend adjustment assembly that allows for the adjustment of the bend setting. A lock piston is included to lock the bend setting in place. Hydraulic pumps are used to unlock the bend adjustment assembly, and an electronics package is included to indicate the bend setting.
The electronics package in the downhole motor can indicate whether the lock piston is in the locked or unlocked position. Additionally, a solenoid valve is included to lock the lock piston in response to a locking signal. The bend adjustment assembly includes an actuator piston that can be activated to adjust the deflection angle between the longitudinal axis of the driveshaft housing and the bearing mandrel. The electronics package can indicate whether the actuator piston is in the activated or deactivated position.
The electronics package in the downhole motor includes an electromagnetic short hop transmitter that can communicate with an electromagnetic short hop receiver in a measurement-while-drilling (MWD) tool connected to the motor. It also includes an electromagnetic communication link.
Overall, this patent describes a downhole motor for directional drilling that includes various components and features to allow for the adjustment and locking of the bend setting. The inclusion of the electronics package provides valuable information on the status of the lock piston and actuator piston, enhancing the control and monitoring capabilities of the motor. The electromagnetic communication capabilities further enhance the communication between the motor and other drilling tools.
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