Communications – electrical: acoustic wave systems and devices – Wellbore telemetering – Through drill string or casing
Patent
1993-07-06
1994-12-13
Lobo, Ian J.
Communications, electrical: acoustic wave systems and devices
Wellbore telemetering
Through drill string or casing
367157, 3408544, 3408554, G01V 140
Patent
active
053734815
ABSTRACT:
In accordance with illustrative embodiments of the present invention, a sonic vibration transmitter that is used, for example, in telemetering measurements made while drilling includes a body that mounts a stack of ceramic crystals which generate bursts of sonic vibrations when excited by encoded electrical signals that represent such measurements. The vibrations are coupled into a metal member of a drill string such as a drill collar by a coupling block that is held tightly between a shoulder on the metal member and the outer end of the stack of crystals by a strong spring that also permits longitudinal dimensional changes under high downhole temperatures. The sonic vibrations are sensed at a remote location on another metal member by a transducer that can be constructed substantially identical to the above-mentioned stack of crystals, of an accelerometer. The output signals of the transducer are filtered, amplified, and processed. Preferably the excitation signals are encoded digitally in accordance with repetition rate of the bursts. Adjacent pairs of such transducers can be used as repeater stations at spaced locations in the drill string to transmit signals from downhole toward the surface.
REFERENCES:
patent: 2910133 (1959-10-01), Hudson et al.
patent: 2957159 (1960-10-01), Fitchette
patent: 3233674 (1966-02-01), Leutwyler
patent: 3252225 (1966-05-01), Hixson
patent: 3588804 (1971-06-01), Fort
patent: 3697940 (1972-10-01), Berka
patent: 3900827 (1975-08-01), Lamel et al.
patent: 3930220 (1975-12-01), Shawhan
patent: 4038632 (1977-07-01), Parker
patent: 4066995 (1978-01-01), Matthews
patent: 4073341 (1978-02-01), Parker
patent: 4139836 (1979-02-01), Chaney et al.
patent: 4283779 (1981-08-01), Lamel
patent: 4283780 (1981-08-01), Nardi
patent: 4293936 (1981-10-01), Cox et al.
patent: 4302826 (1981-11-01), Kent et al.
patent: 4314365 (1982-02-01), Petersen et al.
patent: 4390975 (1983-06-01), Shawhan
patent: 4518888 (1985-05-01), Zabcik
patent: 4562559 (1985-12-01), Sharp et al.
patent: 4597067 (1986-06-01), Bockhorst et al.
patent: 4698794 (1987-10-01), Kruger et al.
patent: 5050132 (1991-09-01), Duckworth
patent: 5056067 (1991-10-01), Drumheller
patent: 5128902 (1992-07-01), Spinnler
patent: 5166908 (1992-11-01), Montgomery
Philips Export B. V., "PXE High-power Actuator for Electronic/Mechanical Interfacing.", Technical Publication 165, (Jun. 1985), Printed in the Netherlands.
Orban Jacques
Squire Roy
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