Method for determining the distance between adjacent wells
CA 1269710 C · Owner: Barnett, Paul Austin · Inventors: Hofstra, Paulus; Lehr, Bernd Christian; Barnett, Paul Austin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The distance between a first well containing ferromagnetic parts and a second well is determined using an overlay technique whereby a plotted diagram representing the wavenumber spectrum of data measured in said second well of a magnetic field surrounding said parts and a plotted diagram representing the wavenumber spectrum of a theoretical magnetic field surrounding a single magnetic monopole or dipole are marched. The technique enables an accurate distance determination even if said ferromagnetic parts form a complex pattern of magnetic poles.
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
- Granted May 29, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 29, 2007.
- 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.