Providing a local response to a local condition in an oil well
CA 2789735 C · Owner: Halliburton Energy Services, Inc. · Inventors: Dudley, James H.; Rodney, Paul F.; Gleitman, Daniel D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for providing a local response to a local condition in an oil well are disclosed. A sensor is provided to detect a local condition in a drill string. A controllable element is provided to modulate energy in the drill string. A controller is coupled to the sensor and to the controllable element. The controller receives a signal from the sensor the signal indicating the presence of said local condition processes the signal to determine a local energy modulation in the drill string to modify said local condition and sends a signal to the controllable element to cause the determined local energy modulation.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed March 3, 2005 and granted January 27, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 3, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.