Intermediate radius steerable tool
CA 2213536 A1 · Owner: Krueger, Volker · Inventors: Watkins, Larry; Fincher, Roger W.; Hill, Douglas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A single jointed rotatable and steerable drilling tool having a flexible motor stator housing, and optionally a flexible bearing housing. The flexible portions can have a reduced outside diameter or increased inside diameter and they can be made from a, relatively high yield strength low modulus of elasticity material. Also disclosed is a method for using the tool to drill all sections of a deviated wellbore from kickoff to the desired inclination angle in a target reservoir. The tool has but one angle such as an, angled sub, making it rotatable to drill a straight hole and to increase the radius of curvature of a curved hole. The tool also has a fluid driven motor making it operable in, …
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 August 21, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 21, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 21, 2019.
- 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.