Wells – Processes – Placing fluid into the formation
Patent
1984-10-12
1986-02-11
Novosad, Stephen J.
Wells
Processes
Placing fluid into the formation
166185, 166191, 166387, E21B 4316, E21B 2306
Patent
active
045693960
ABSTRACT:
A selective injection packer apparatus includes a housing having a longitudinal housing bore therethrough. A mandrel has a longitudinal mandrel bore therethrough and is slidably disposed in the housing bore. Upper and lower longitudinally spaced compressible packers are disposed about the housing. Upper and lower power pistons are operably associated with the housing and the upper and lower packers, respectively, for longitudinally compressing and radially expanding the upper and lower packers in response to an increase in fluid pressure within the mandrel bore. A power passage is operatively associated with the power pistons for selectively communicating the mandrel bore with the power pistons. An injection passage is operatively associated with the housing and the mandrel for selectively communicating the mandrel bore with an exterior of the housing between the upper and lower packers. A release passage is operatively associated with the housing and the mandrel for selectively communicating an upper exterior of the housing above the upper packer and a lower exterior of the housing below the lower packer with both the power passage and the injection passage concurrently to thereby balance fluid pressures on the upper and lower power pistons and the upper and lower packers to allow the upper and lower packers to release from sealed engagement with the well bore.
REFERENCES:
patent: 2227730 (1941-01-01), Lynes
patent: 2227731 (1941-01-01), Lynes
patent: 2715444 (1955-08-01), Fewel
patent: 2824612 (1958-02-01), Lynes
patent: 2831541 (1958-04-01), Conover
patent: 3122205 (1964-01-01), Brown et al.
patent: 3136364 (1964-06-01), Myers
patent: 3865188 (1975-02-01), Doggett et al.
patent: 3876000 (1975-04-01), Nutter
patent: 4279306 (1981-07-01), Weitz
patent: 4424860 (1984-01-01), McGill
patent: 4460041 (1984-07-01), Berryman
patent: 4484625 (1984-11-01), Barbee, Jr.
patent: 4485876 (1984-12-01), Speller
patent: 4519456 (1985-05-01), Cochran
Beavers Lucian W.
Halliburton Company
Kisliuk Bruce M.
Novosad Stephen J.
Walkowski Joseph A.
LandOfFree
Selective injection packer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Selective injection packer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Selective injection packer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1201516