Vibrator sub
AssigneeSaudi Arabian Oil Company
InventorAbdulrahman Abdulaziz Al-Mulhem
Life of this patent
Estimating the term…
Abstract
A vibrator tool for use in inserting a bottom hole assembly into a wellbore, the vibrator tool including a substantially cylindrical body, a motor within the substantially cylindrical body, a non-linear shaft attached to the motor so that the motor turns the non-linear shaft, the non-linear shaft extending outwardly from the motor within the substantially cylindrical body, and a bearing attached to the shaft a predetermined distance from the motor so that the bearing rotates as the non-linear shaft turns, the bearing contacting portions of the inner surface of the cylindrical body as the non-linear shaft turns, thereby vibrating the substantially cylindrical body.
Claims8
A vibrator tool for use in inserting a bottom hole assembly into a wellbore, the vibrator tool comprising:
- a substantially cylindrical body;
- a motor within the substantially cylindrical body;
- a non-linear shaft attached to the motor so that as the motor turns the non-linear shall, the non-linear shaft extends outwardly from the motor within the substantially cylindrical body;
- and
- a bearing attached to the shaft a distance from the motor so that the bearing rotates as the non-linear shaft turns, the bearing contacting portions of the inner surface of the cylindrical body as the non-linear shaft turns, thereby vibrating the substantially cylindrical body.
A vibrator tool for use in inserting a bottom hole assembly into a wellbore, the vibrator tool comprising:
- a substantially cylindrical body;
- a motor attached to the cylindrical body;
- a substantially circular gear that rotates radially and that is driven by the motor;
- and
- a weight attached to the gear at a position off-center relative to the center of the gear, so that when the gear rotates the off-center attachment of the weight causes the motor and the cylindrical body to vibrate.
A method of inserting logging equipment into a wellbore, the method comprising the steps of:
- inserting a bottom hole assembly attached to coiled tubing into a wellbore, the bottom hole assembly including a vibrating tool, the vibrating tool comprising:
- a non-linear shaft attached to the motor so that the motor turns the non-linear shaft, the non-linear shaft extending outwardly from the motor within the substantially cylindrical body;
- and
- a bearing attached to the shaft a predetermined distance from the motor so that the bearing rotates as the non-linear shaft turns, the bearing contacting portions of the inner surface of the cylindrical body as the non-linear shall turns, thereby vibrating the substantially cylindrical body;
- lowering the bottom hole assembly through a vertical part of the well;
- pushing the bottom hole assembly through a deviated part of the well using the tubing;
- and
- vibrating the bottom hole assembly and tubing with the vibrating tool to reduce friction between the bottom hole assembly and tubing, and the wellbore.
Dependencies are inferred from the claim text.