US 7,139,219 C2 (12,605th)
Hydraulic impulse generator and frequency sweep mechanism for borehole applications
Jack J. Kollé, Seattle, WA (US); Mark H. Marvin, Tacoma, WA (US); and Kenneth J. Theimer, Auburn, WA (US)
Filed by Jack J. Kollé, Seattle, WA (US); Mark H. Marvin, Tacoma, WA (US); and Kenneth J. Theimer, Auburn, WA (US)
Assigned to WELLS FARGO BANK, NATIONAL ASSOCIATION, Atlanta, GA (US)
Reexamination Request No. 90/015,314, Nov. 1, 2023.
Reexamination Certificate for Patent 7,139,219, issued Nov. 21, 2006, Appl. No. 10/777,484, Feb. 12, 2004.
Reexamination Certificate C1 7,139,219, issued Sep. 14, 2023.
Ex Parte Reexamination Certificate issued on May 20, 2024.
Int. Cl. E21B 21/10 (2006.01); E21B 47/14 (2006.01); E21B 47/22 (2012.01); G01V 1/00 (2006.01); G01V 1/40 (2006.01)
CPC G01V 1/003 (2013.01) [E21B 47/14 (2013.01); E21B 47/22 (2020.05); G01V 1/40 (2013.01); Y10T 137/2552 (2015.04)]
OG exemplary drawing
AS A RESULT OF REEXAMINATION, IT HAS BEEN DETERMINED THAT:
The patentability of claims 1-46 is confirmed.
1. A valve configured for generating a pressure pulse within a conduit by at least partially interrupting flow of a pressurized fluid circulating through the conduit, comprising:
(a) an inlet port configured to couple in fluid communication with the conduit through which the pressurized fluid is circulating;
(b) an outlet port configured to couple in fluid communication with the conduit through which the pressurized fluid is circulating;
(c) a plurality of fluid passages configured to selectively couple in fluid communication with said inlet port;
(d) a poppet that is actuated by the pressurized fluid to cycle between an open position and a closed position, such that when in said closed position, said poppet at least partially interrupts a flow of the pressurized fluid through said outlet port; and
(e) a pilot disposed within said poppet, said pilot being reciprocated back and forth between first and second positions during each cycle by the pressurized fluid, such that a position of said pilot determines which of said plurality of fluid passages is coupled in fluid communication with said inlet port.