Boring or penetrating the earth – With seismic shock generating
Reexamination Certificate
2006-06-13
2006-06-13
Tsay, Frank S. (Department: 3672)
Boring or penetrating the earth
With seismic shock generating
C175S056000, C175S205000, C166S321000, C166S332100
Reexamination Certificate
active
07059426
ABSTRACT:
An underground drilling method and apparatus generates intense pressure pulses at a location at the surface. The pressure pulses propagate down through a drill string to a drill bit. The pulses may be generated by creating water hammer in flowing drilling mud. Intensity of the acoustic pulses is increased in the bit nozzles. Vigorous pulsing of the fluid exiting the bit nozzles results in better cleaning of the hole bottom and faster drilling. The pulses may be used to drive the operation of various down hole tools. One type of tool has multiple pistons arranged in series. High pressure pulses move the pistons to generate strong mechanical vibration in the drill string. Vibration of the drill string may also reduce the friction between the drill string and the hole, resulting in lower torque requirements.
REFERENCES:
patent: 3507341 (1970-04-01), Basgan
patent: 3741692 (1973-06-01), Rupp
patent: 3908770 (1975-09-01), Richter, Jr. et al.
patent: 4074612 (1978-02-01), Miller
patent: 4093406 (1978-06-01), Miller
patent: 4518048 (1985-05-01), Varley
patent: 4817739 (1989-04-01), Jeter
patent: 5092411 (1992-03-01), Hausherr et al.
patent: 5459699 (1995-10-01), Walter
patent: 5467322 (1995-11-01), Walter
patent: 5508975 (1996-04-01), Walter
patent: 5519670 (1996-05-01), Walter
patent: 5549252 (1996-08-01), Walter
patent: 5626016 (1997-05-01), Walter
patent: 5950736 (1999-09-01), Goldstein
patent: 6050349 (2000-04-01), Rountree et al.
patent: 6219301 (2001-04-01), Moriarty
patent: 6289998 (2001-09-01), Krueger et al.
patent: 6388577 (2002-05-01), Carstensen
patent: 2541795 (1977-03-01), None
patent: 0 406 492 (1991-01-01), None
patent: 2 345 931 (2000-07-01), None
patent: 06683 (1982-05-01), None
Lewal Drilling Ltd.
Oyen Wiggs Green & Mutala LLP
Tsay Frank S.
LandOfFree
Acoustic flow pulsing apparatus and method for drill string does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Acoustic flow pulsing apparatus and method for drill string, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Acoustic flow pulsing apparatus and method for drill string will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3631183