Method of treating oil and gas wells
CA 2562461 C · Owner: Wilkinson, Jeffrey M. · Inventors: Wilkinson, Jeffrey M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved process for optimizing the stimulation of an entire target formation of an oil or gas well during fluid treatment is obtained by dividing the target formation (110) into intermediate zones (120 130, 140) and , initiating stimulation in each intermediate zone (120 130, 140). Once , stimulation is initiated in each intermediate zone (120 130, 140), ball , sealers are used to block the casing perforations (150 160, 170) at the , intermediate zone (120 130, 140) and divert fluids to another intermediate zone (120, 130, 140). After stimulation has been initiated in all intermediate zones (120, 130, 140), the ball sealers are removed from the perforations (150, 160, 170) and …
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 April 14, 2005 and granted July 9, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 14, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.