Pulsed neutron logging: multipurpose logging sonde for changing types of logs in the borehole without bringing the sonde to the surface
CA 1048162 A · Owner: Texaco Development Corporation · Inventors: Malone, Steve G.; Langford, Obie M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
PULSED NEUTRON LOGGING: MULTIPURPOSE LOGGING SONDE FOR CHANGING TYPES OF LOGS IN THE BOREHOLE WITHOUT BRINGING THE SONG TO THE SURFACE (D#74,166-F), ABSTRACT OF THE INVENTION Disclosed is a system for nuclear well logging in which neutron pulse time duration for a high energy neutron generator and the frequency of pulses are selected downhole in the tool by use of a coded signal transmitted by the cable from the earth's surface. Separate channel systems are provided in the downhole tool fox desired neutron pulse width and repetition frequency and are operated by a decoder system. Additionally the accelerator voltage on a high energy neutron generator is controlled by a downhole switching …
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 February 6, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 6, 1996.
- 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.