Wells – Packers or plugs – With expanding anchor
Patent
1983-02-18
1986-04-15
Novosad, Stephen J.
Wells
Packers or plugs
With expanding anchor
166125, 166182, 166237, E21B 2306
Patent
active
045821356
ABSTRACT:
There are disclosed two embodiments of a packer for closing off the annular space between a pipe string and a well bore in which the pipe string is disposed, each of which includes an annular packing element adapted to be expanded into sealing engagement with the well bore in response to relative axial movement between inner and outer tubular members, and releasably latched in expanded position by means which includes a circumferentially expandible and retractable body lock ring. In each case, the body lock ring has cam teeth about its outer side which are engaged with cam teeth on the inner circumference of the outer tubular member for circumferential expansion and contraction with respect thereto, and a relatively long length of ratchet teeth on its inner side for ratcheting with respect to a relatively short length of ratchet teeth on the outer circumference of a latching member carried by the inner tubular member in response to movement of the tubular members to retracted positions.
REFERENCES:
patent: 3086589 (1963-04-01), McGowen, Jr.
patent: 3244233 (1966-04-01), Villalon, Jr.
patent: 3374837 (1968-03-01), Page et al.
patent: 3552489 (1971-01-01), Berryman
patent: 3749166 (1973-07-01), Young
patent: 4071084 (1978-01-01), Brown
patent: 4289200 (1981-09-01), Fisher, Jr.
patent: 4375240 (1983-03-01), Baugh
AVA International Corporation
Dang Hoang C.
Novosad Stephen J.
LandOfFree
Well packers does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Well packers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Well packers will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1433801