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:
Feb. 11, 1986
Filed:
Feb. 29, 1984
Ronald E Sweatman, Cypress, TX (US);
Earl R Freeman, Oklahoma City, OK (US);
John Gottschling, Williamstown, WV (US);
Hughes Tool Company, Houston, TX (US);
Abstract
A method and apparatus are shown for treating a subsurface earth formation penetrated by a well bore. A proppant is blended with a foamable carrier to form a slurry and the slurry is pressurized to a desired pressure. A gas is added to the pressurized slurry to form a foam. Proppant is then added pneumatically to the pressurized slurry after foaming the slurry and the pressurized fluid is injected into the well bore. The proppant is fed to a manifold which is connected to a source of pressurized gas whereby the application of gas pressure to the manifold serves to blow the proppant into the pressurized foam stream. The foam containing the proppant is then injected into the well in the conventional manner to prop open the fracture.