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. 21, 2017
Filed:
Mar. 25, 2014
Ut-battelle, Llc, Oak Ridge, TN (US);
Jy-An John Wang, Oak Ridge, TN (US);
Hong Wang, Oak Ridge, TN (US);
Fei Ren, Philadelphia, PA (US);
Thomas S. Cox, Oak Ridge, TN (US);
UT-Battelle, LLC, Oak Ridge, TN (US);
Abstract
A rotary shutter valveis used for geothermal reservoir stimulation. The valveincludes a pressure chamberfor holding a working fluid (F) under pressure. A rotatable shutteris turned with a powering deviceto periodically align one or more windowswith one or more aperturesin a bulkhead. When aligned, the pressurized working fluid (F) flows through the bulkheadand enters a pulse cavity, where it is discharged from the pulse cavityas pressure waves. The pressure wave propagationand eventual collapse of the bubblescan be transmitted to a target rock surfaceeither in the form of a shock wave, or by micro jets, depending on the bubble-surface distance. Once cavitation at the rock face begins, fractures are initiated in the rock to create a network of micro-fissures for enhanced heat transfer.