Communications: electrical – Wellbore telemetering or control – Selective control of subsurface equipment
Reexamination Certificate
2007-07-17
2007-07-17
Wong, Albert K. (Department: 2612)
Communications: electrical
Wellbore telemetering or control
Selective control of subsurface equipment
C702S009000, C340S853100
Reexamination Certificate
active
10882789
ABSTRACT:
A method for communicating with a downhole device is provided. The method includes predefining an encoding language including codes understandable to the device, the codes represented in the language as predefined value combinations of drill string rotation variables such as rotation rate or duration. The method further includes rotating a drill string at first and second rates and measuring the rotation rates downhole. The first measured rotation rate is processed downhole in combination with the second measured rotation rate to acquire a code in the language at the downhole device. Embodiments of the invention are useful, for example, for transmitting commands from the surface to a downhole device such as a directional drilling tool. Exemplary embodiments of this invention advantageously provide for quick and accurate communication with a downhole device without substantially interrupting the drilling process.
REFERENCES:
patent: 3298449 (1967-01-01), Bachman et al.
patent: 3967680 (1976-07-01), Jeter
patent: 4354233 (1982-10-01), Zhukovsky et al.
patent: 4655299 (1987-04-01), Schoeffler
patent: 4763258 (1988-08-01), Engelder
patent: 5065825 (1991-11-01), Bardin et al.
patent: 5603386 (1997-02-01), Webster
patent: 6267185 (2001-07-01), Mougel et al.
patent: 6608565 (2003-08-01), Van Steenwyk et al.
patent: 2172324 (1986-07-01), None
patent: 2177738 (1987-01-01), None
patent: 2282165 (1995-03-01), None
patent: 2356207 (2001-05-01), None
patent: 2358651 (2001-08-01), None
patent: WO-90/07625 (1990-07-01), None
patent: WO-90/08245 (1990-07-01), None
patent: WO-01-1191 (2001-02-01), None
Baron Emilio
Jones Stephen
PathFinder Energy Services, Inc.
Wong Albert K.
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