The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 02, 1989
Filed:
Aug. 22, 1988
Joseph Mzik, Calgary, CA;
Other;
Abstract
A method is described for fracturing a subterranean formation penetrated by a wellbore. A fracturing fluid in the form of a mixture of liquid carbon dioxide and a liquid hydrocarbon component of specific characteristics is injected down the wellbore under pressure to cause fracturing. The hydrocarbon component contains at least 70 wt. % of C.sub.5 -C.sub.14 constituents and at least 8 wt. % aromatics and has an average molecular mass of less than 200, a pour point of less than -40.degree. C. and a density of from 0.77 to 0.85 g/ml at 15.degree. C. This hydrocarbon component provides a higher viscosity than the liquid carbon dioxide at lower temperatures and is also an excellent solvent, simplifying clean-up. The novel fracturing fluid may also contain the usual proppants.