STREAMLINED TRANSMISSION ASSEMBLY

摘要

A Streamlined Transmission assembly is used to convert eccentric rotation created by the power section into concentric rotation to be received by a bearing assembly in order to drive the rotation of a drill bit attached to a drilling assembly section of a downhole tool. The Streamlined Transmission assembly can be configured with a joint that can alter the angle of the bottom hole assembly by the use of a bent housing section while maintaining the capability to transfer large torque loads. The joint of the bent housing section of the assembly is configured to decrease deterioration of a lower seal boot and wash in the lower joint by reducing the volume of turbulent flow adjacent to each structure.

主权项

1. A downhole power section transmission comprising:
a rotor, a CV shaft, and a drive coupling, configured such that the rotor transmits torque to the CV shaft, the CV shaft transmits torque to the drive coupling, and the drive coupling transmits torque to other downhole components to drive rotation of a drill bit; the rotor further comprising a rotor adaptor configured with a first drill bit facing cup section, the CV shaft connected to the rotor adaptor at the first drill bit facing cup section through a first rotating joint; the CV shaft further comprising a second drill bit facing cup section, the drive coupling connected to the CV shaft at the second drill bit facing cup section through a second rotating joint; and the drive coupling configured to couple with a thrust receiving section of a downhole drill bit assembly.