Boring or penetrating the earth – With signaling – indicating – testing or measuring – Measuring or indicating drilling fluid rate of flow
Reexamination Certificate
2007-01-30
2007-01-30
Tsay, Frank S. (Department: 3672)
Boring or penetrating the earth
With signaling, indicating, testing or measuring
Measuring or indicating drilling fluid rate of flow
C175S050000
Reexamination Certificate
active
10709108
ABSTRACT:
The invention includes, in its various aspects and embodiments, a method and apparatus for multiplexing data on-bit in a drilling operation. The apparatus comprises a bit; a plurality of transducers situated on the bit; and an analog multiplexer situated on the on the bit and capable of receiving the output of the transducers, multiplexing the received outputs, and transmitting the multiplexed outputs. The method comprises taking a plurality of measurements of at least one down-hole drilling condition at a bit of a drill string; generating a plurality of analog signals representative of the measurements; and multiplexing the analog signals at the bit.
REFERENCES:
patent: 3707700 (1972-12-01), Lafont
patent: 4001774 (1977-01-01), Dawson et al.
patent: 4033186 (1977-07-01), Bresie
patent: 4161782 (1979-07-01), McCracken
patent: 4227404 (1980-10-01), West
patent: 4227405 (1980-10-01), West
patent: RE31222 (1983-04-01), McCracken
patent: 4409824 (1983-10-01), Salama et al.
patent: 4415895 (1983-11-01), Flagg
patent: 4434971 (1984-03-01), Cordrey
patent: 4459760 (1984-07-01), Watson et al.
patent: 4471533 (1984-09-01), Van Steenwyk et al.
patent: 4507735 (1985-03-01), Moorehead et al.
patent: 4527425 (1985-07-01), Stockton
patent: 4556884 (1985-12-01), Howells et al.
patent: 4578675 (1986-03-01), MacLeod
patent: 4583093 (1986-04-01), Beals
patent: 5064006 (1991-11-01), Waters et al.
patent: 5133417 (1992-07-01), Rider
patent: 5230387 (1993-07-01), Waters et al.
patent: 5251708 (1993-10-01), Perry et al.
patent: 5273122 (1993-12-01), Henneuse
patent: 5278758 (1994-01-01), Perry et al.
patent: 5454605 (1995-10-01), Mott
patent: 5813480 (1998-09-01), Zaleski, Jr. et al.
patent: 5908212 (1999-06-01), Smith et al.
patent: 6026915 (2000-02-01), Smith et al.
patent: 6230822 (2001-05-01), Sullivan et al.
patent: 6550321 (2003-04-01), Patey et al.
patent: 6626251 (2003-09-01), Sullivan et al.
patent: 6670880 (2003-12-01), Hall et al.
patent: 6842990 (2005-01-01), Taylor
patent: 0186328 (1986-07-01), None
Boucher Marcel
Ivie Craig
Schen Aaron
Stanes Brett
Daly Jeffery E.
ReedHycalog, L.P.
Tsay Frank S.
Williams Morgan & Amerson P.C.
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