Method and tool for use in commencing the drilling of a deviated well
CA 2188531 C · Owner: Klatt, Darrell · Inventors: Klatt, Darrell
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and a tool for use in commencing the drilling of a deviated well from a gap in the casing (78) of a cased wellbore using a non-rotary drill string (20) while maintaining the desired orientation of the drill bit by minimizing the effects of reactive torque and axial loading on the drill string. The tool comprises a drill bit (30), a downhole motor (32) a tubular member (68) connected between the downhole motor and the drill string, and an anchor assembly (82) slidably mounted on the tubular member which is actuated by the tubular member to engage the casing during drilling of the well. The tubular member includes a setting section (172) for actuating the anchor assembly a freewheel …
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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 April 22, 1996 and granted March 27, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 22, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 22, 2018.
- 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.