Downlink telemetry system

Details Downlink telemetry system Downlink telemetry system

2005-07-19

2005-07-19

Edwards, Jr., Timothy (Department: 2635)

Communications, electrical: acoustic wave systems and devices

Wellbore telemetering

Through well fluids

C340S853100, C340S854300, C175S061000, C166S373000

Reexamination Certificate

active

06920085

ABSTRACT:
A downlink telemetry system providing improved apparatus and methods for communicating instructions via pressure pulses from surface equipment to a downhole assembly. The apparatus comprises a surface transmitter for generating pressure pulses, a control system, and a downhole receiver for receiving and decoding pulses.In operation, a bypass valve is opened and closed to create a series of pressure pulses received and decoded by a downhole receiver. The method significantly reduces the time required for downlink communication without interrupting drilling and without interrupting uplink communications such that simultaneous, bi-directional communication is achievable if the uplink and downlink signals are sent at different frequencies.The telemetry scheme and algorithm provide an inventive method for filtering and decoding the downlink signals. The algorithm determines the time intervals between pulse peaks and decodes the intervals into an instruction. The algorithm also includes error checking for verifying that the instruction was properly received downhole.

REFERENCES:
patent: 4078620 (1978-03-01), Westlake et al.
patent: 4461359 (1984-07-01), Jones, Jr. et al.
patent: 4471843 (1984-09-01), Jones, Jr. et al.
patent: 4550392 (1985-10-01), Mumby
patent: 4556884 (1985-12-01), Howells et al.
patent: 4689775 (1987-08-01), Scherbatskoy
patent: 4794534 (1988-12-01), Millheim
patent: 5113379 (1992-05-01), Scherbatskoy
patent: 5115415 (1992-05-01), Mumby et al.
patent: 5148408 (1992-09-01), Matthews
patent: 5150333 (1992-09-01), Scherbatskoy
patent: 5318137 (1994-06-01), Johnson et al.
patent: 5318138 (1994-06-01), Dewey et al.
patent: 5331318 (1994-07-01), Montgomery
patent: 5332048 (1994-07-01), Underwood et al.
patent: 5390153 (1995-02-01), Scherbatskoy
patent: 5467083 (1995-11-01), McDonald et al.
patent: 5579283 (1996-11-01), Owens et al.
patent: 5615172 (1997-03-01), Kotlyar
patent: 5703836 (1997-12-01), Drumheller
patent: 5722488 (1998-03-01), Normann et al.
patent: 5787052 (1998-07-01), Gardner et al.
patent: 5802011 (1998-09-01), Winters et al.
patent: 5803185 (1998-09-01), Barr et al.
patent: 5818352 (1998-10-01), McClure
patent: 5836353 (1998-11-01), Van Steenwyk
patent: 5959547 (1999-09-01), Tubel et al.
patent: 5963138 (1999-10-01), Gruenhagen
patent: 6021095 (2000-02-01), Tubel et al.
patent: 6097310 (2000-08-01), Harrell et al.
patent: 6105690 (2000-08-01), Biglin, Jr. et al.
patent: 6182764 (2001-02-01), Vaynshteyn
patent: 6516898 (2003-02-01), Krueger
patent: 6536529 (2003-03-01), Kerr et al.
patent: 0 744 527 (1996-11-01), None
patent: 0 744 527 (2001-07-01), None
patent: WO 97/14869 (1997-04-01), None
patent: WO 99/19751 (1999-04-01), None
patent: WO 99/54591 (1999-10-01), None
patent: WO 99/61746 (1999-12-01), None
patent: WO 00/28188 (2000-05-01), None
Odell II, A. C., et al; SPE 30462;Application of a Highly Variable Gauge Stabilizer at Wytch Farm to Extend the ERD Envelope; Oct. 22-25, 1995 SPE Annual Technical Conference; (pp. 119-129).
AutoTrak™ Rotary Closed Loop Drilling System; Baker Hughes Inteq: (1997) (pp. 12).
AutoTrak; [online]. Retrieved from the Internet<URL: http://www.bakerhughes.com/inteq/Drilling/autotrak/autotrak.htm (pp. 1-9).
TRACS™:Telemetry regulated Angle Control System; Halliburton Energy Services; Directional Drilling Services; 1995; (pp. 2).
TRACS™Adjustable Stabilizer: Telemetry regulated Angle Control system Improve Drilling Efficiency, Maximize Drilling Control; Halliburton Energy Services; 1995; (pp. 8).
PCT International Search Report for Appln. No. PCT/US02/04264 dated Jul. 16, 2002; (5 p.).

Affiliated with

Also associated with

Rating

Downlink telemetry system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Downlink telemetry system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Downlink telemetry system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3403587