Salt free invert drilling mud
CA 2451926 A1 · Owner: Masikevich, James D. · Inventors: Mesher, Shaun T.; Masikevich, James D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fluid is provided for the drilling, workover and completion of a subterranean well, comprising of an oil emulsion invert containing an emulsifier, lime, clay , and/or polymer and a aqueous internal phase consisting of molasses which is a solution of sucrose, plus, some glucose, fructose and other organic and inorganic matter in water. Further the vapor, activity of the internal phase can be adjusted with the use of desiccants to provide increased, shale stability while drilling. Desiccants comprised of anhydrous salts are preferred, such as, trisodium phosphate and zinc sulfate.
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 December 23, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 23, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 23, 2025.
- 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.