Wells – Processes – Placing or shifting well part
Patent
1995-05-12
1997-08-05
Tsay, Frank
Wells
Processes
Placing or shifting well part
166 7751, 254 29R, E21B 1902
Patent
active
056532903
ABSTRACT:
The invention relates to a method and a device for longitudinally adjusting the position of a rotating rod string, having an upper end and a lower end, in a production well of the type having a downhole rotary pump connected to the lower end of the rod string, means for driving the rotary pump by rotating the rod string, and a lower clamp operably connected to the driving means and releasably fixable near the upper end of the rod string such that operation of the driving means rotates the lower clamp which rotates the rod string. The device is comprised of a tubular inner sleeve having a threaded outer surface and a lower end for removably mounting on the lower clamp such that the rod string is contained therein and rotation of the lower clamp by the driving means rotates the inner sleeve. A tubular outer sleeve having an upper end and a threaded inner surface is mounted about and threadably engaged with the inner sleeve. An upper clamp is mounted on the upper end of the outer sleeve and is releasably fixable to the rod string so that while the lower clamp is released from the rod string and the upper clamp is fixed to the rod string, operation of the driving means rotates the lower clamp and the inner sleeve such that the outer sleeve telescopes relative to the inner sleeve until the rod string is longitudinally adjusted within the well by longitudinal movement of the upper clamp.
REFERENCES:
patent: Re25680 (1964-11-01), Brown
patent: 1447744 (1923-03-01), Wright
patent: 1454088 (1923-05-01), Thrift
patent: 1999174 (1935-04-01), Jackson
patent: 3099323 (1963-07-01), Kelly
patent: 3166125 (1965-01-01), Hubby
patent: 3177943 (1965-04-01), McCoy
patent: 4209066 (1980-06-01), Watson
patent: 4320799 (1982-03-01), Gilbertson
patent: 4437515 (1984-03-01), Boyadjieff et al.
patent: 4465131 (1984-08-01), Boyadjieff
patent: 4479537 (1984-10-01), Reed
patent: 4632183 (1986-12-01), McLeod
patent: 4676312 (1987-06-01), Mosing
patent: 4791997 (1988-12-01), Krasnov
patent: 4890671 (1990-01-01), Boxter
patent: 5327961 (1994-07-01), Mills
Campbell Industries Ltd.
Tsay Frank
LandOfFree
Rotating rod string position adjusting device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rotating rod string position adjusting device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rotating rod string position adjusting device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1068389