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:
Jul. 29, 2008
Filed:
Mar. 25, 2004
Roger L. Schultz, Aubrey, TX (US);
Robert K. Michael, Frisco, TX (US);
Pete C. Dagenais, The Colony, TX (US);
Michael L. Fripp, Carrollton, TX (US);
James C. Tucker, Springer, OK (US);
Roger L. Schultz, Aubrey, TX (US);
Robert K. Michael, Frisco, TX (US);
Pete C. Dagenais, The Colony, TX (US);
Michael L. Fripp, Carrollton, TX (US);
James C. Tucker, Springer, OK (US);
Halliburton Energy Services, Inc., Duncan, OK (US);
Abstract
In one embodiment, the present invention provides an apparatus for creating pulsating fluid flow, including an inlet into which fluid flows and a chamber having an upstream end and a downstream end. The chamber is defined by a pair of outwardly-projecting sidewalls, and the inlet is disposed at the upstream end of the chamber. This particular embodiment further includes at least two feedback passages with opposed entrances at the downstream end of the chamber and opposed exits at the upstream end of the chamber, near where the chamber joins the inlet. At least one feedback outlet leaves each of the feedback passages. A feedback cavity is disposed at the downstream end of the chamber. At least one exit flowline having an exit port leaves the at least one feedback outlet.