Wells – Vibrator
Reexamination Certificate
2007-05-22
2007-05-22
Bates, Zakiya W. (Department: 3676)
Wells
Vibrator
C166S178000, C166S249000, C175S297000
Reexamination Certificate
active
11156951
ABSTRACT:
An apparatus for use in a wellbore comprises a housing having a longitudinal axis and a mechanism having one or more impact elements adapted to move along the longitudinal axis in an oscillating manner to impart a back and forth force on the housing to vibrate the housing. In another arrangement, an apparatus for use in a wellbore comprises a housing and at least one impact element rotatably mounted in the housing. The at least one impact element is rotatable to oscillate back and forth to impart a vibration force to the housing.
REFERENCES:
patent: 2146454 (1939-02-01), Sutliff
patent: 3811515 (1974-05-01), Bazhal
patent: 4573536 (1986-03-01), Lawrence
patent: 4890682 (1990-01-01), Worrall et al.
patent: 5273114 (1993-12-01), Wicks, III
Jeffryes Benjamin P.
Leising Lawrence J.
Thomeer Hubertus V.
Zheng Shunfeng
Bates Zakiya W.
Castano Jaime
Cate David
Schlumberger Technology Corp.
Warfford Rodney
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