Cement logging apparatus
CA 1261424 A · Owner: Senger, David E. · Inventors: Senger, David E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is disclosed a cement logging tool which operates on the principle that a differential in fluid viscosity between cement and other fluids in the borehole results in a like differential in fluid drag. The cement logging tool is comprised of a body adapted to be connected to a wireline, the body having a chamber with a plurality of openings which are adapted to permit the entry of fluids; a movable member disposed in the chamber; and a sensor housed in the body which is adapted to translate movement of the movable member into an electrical signal.
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 September 26, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 26, 2006.
- 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.