Abstract

An apparatus for transmitting torque to a down hole motor in a down hole drilling assembly. The apparatus includes a center rod having a distal protuberance and a proximal protuberance, a transmission adapter having a first end connected to the down hole motor, and a transmission socket formed within a second end of the transmission adapter and configured to receive the proximal protuberance. A material bridge may be provided for the protuberances.

IPC Classes  ?

• F16D 3/00 - Yielding couplings, i.e. with means permitting movement between the connected parts during the drive

Abstract

An apparatus for transmitting torque to a down hole motor in a down hole drilling assembly. The apparatus includes a center rod having a distal protuberance and a proximal protuberance, a transmission adapter having a first end connected to the down hole motor, and a transmission socket formed within a second end of the transmission adapter and configured to receive the proximal protuberance. A material bridge may be provided for the protuberances. The apparatus may also include a bearing adapter operatively connected to the center rod, with the bearing adapter having a bearing socket therein, and wherein the transmission adapter is configured to connect to an output of the down hole motor and the bearing adapter is configured to connect to an input of a bearing assembly in the down hole assembly for drilling the well. The adapters may contain external threads and the caps may contain cooperating internal threads. A method of drilling a well is also disclosed.

IPC Classes  ?

• E21B 4/00 - Drives for drilling, used in the borehole
• F16D 3/10 - Couplings with means for varying the angular relationship of two coaxial shafts during motion
• E21B 4/02 - Fluid rotary type drives
• F16D 3/18 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts the coupling parts having slidably-interengaging teeth

Abstract

An apparatus for transmitting torque to a down hole motor in a down hole drilling assembly. The apparatus includes a center rod having a distal protuberance and a proximal protuberance, a transmission adapter having a first end connected to the down hole motor, and a transmission socket formed within a second end of the transmission adapter and configured to receive the proximal protuberance. The apparatus may also include a bearing adapter operatively connected to the center rod, with the bearing adapter having a bearing socket therein, and wherein the transmission adapter is configured to connect to an output of the down hole motor and the bearing adapter is configured to connect to an input of a bearing assembly in the down hole assembly for drilling the well. A method of drilling a well is also disclosed.

IPC Classes  ?

• F16D 3/00 - Yielding couplings, i.e. with means permitting movement between the connected parts during the drive