Wells – Valves – closures or changeable restrictors – Fluid operated
Patent
1982-09-24
1984-06-05
Purser, Ernest R.
Wells
Valves, closures or changeable restrictors
Fluid operated
166332, 166 72, 137629, E21B 3410, E21B 4312
Patent
active
044523114
ABSTRACT:
Pressure equalizing means for well tools having a tubular housing and an operator tube movable longitudinally therewithin, there being provided a valved bypass passage in the housing and a shoulder on the operator tube for engaging and opening the valve of the valved bypass passage upon longitudinal movement of the operator tube in the housing, the equalizing mechanism further including a pair of seal rings sealing between the housing and the operator tube above and below the valved bypass passage in the housing and a lateral passage in the wall of the operator tube normally above the pair of seals but movable under no-flow conditions with the operator tube to a position between the pair of seals prior to the operator tube shoulder contacting the valve of the bypass passage, thus avoiding damage to or flow cutting of the seals which normally form a secondary seal to provide bubble-tight integrity even if the valve in the bypass passage does not seal bubble tight.
REFERENCES:
patent: 2663545 (1953-12-01), Grable
patent: 3071151 (1963-01-01), Sizer
patent: 3078923 (1963-02-01), Tausch
patent: 3273649 (1966-09-01), Tamplen
patent: 3583442 (1971-06-01), Dollison
patent: 3696868 (1972-10-01), Taylor, Jr.
patent: 3703193 (1972-11-01), Raulins
patent: 3731742 (1973-05-01), Sizer et al.
patent: 3799204 (1974-03-01), Watkins et al.
patent: 3799258 (1974-03-01), Tausch
patent: 3826462 (1974-07-01), Taylor
patent: 3845818 (1974-11-01), Deaton
patent: 3854502 (1974-12-01), Mott
patent: 3860066 (1975-01-01), Pearce et al.
patent: 3865141 (1975-02-01), Young
patent: 3999574 (1976-12-01), Ott
patent: 4103744 (1978-08-01), Akkerman
patent: 4140153 (1979-02-01), Deaton
patent: 4149698 (1979-04-01), Deaton
Speegle Steven C.
Sullivan Vinson D.
Vinzant Michael B.
Carroll Albert W.
Dang Hoang C.
Otis Engineering Corporation
Purser Ernest R.
LandOfFree
Equalizing means for well tools does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Equalizing means for well tools, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Equalizing means for well tools will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1493359