Treating wells with non-buoyant ball sealers
CA 1210686 A · Owner: Mobil Oil Corporation · Inventors: Strubhar, Malcolm K.; Jennings, Alfred R. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In the treatment of the producing zones of a well to enhance the flow of produced liquids, ball sealers having a specific gravity greater than the produced fluids are suspended in a viscous fluid having substantially the same specific gravity as the ball sealers. The viscous fluid with the ball sealers suspended therein are, supplied to at least one of the zones of the well to seat the ball sealers in the perforations in the casing and cement sheath thereby diverting fluid flow from that zone while another zone of the well is being treated.
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 2, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 2, 2003.
- 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.