Wells – Processes – Assembling well part
Patent
1980-11-28
1982-10-12
Novosad, Stephen J.
Wells
Processes
Assembling well part
166278, 166380, E21B 3402, E21B 4304, E21B 4310
Patent
active
043534198
ABSTRACT:
A method for forming and assembling a well production and sand screen assembly in a well having a screen therein forming an outer annulus and a wash pipe internally of the screen forming an inner annulus comprising further (a) mounting a high pressure fluid pump means and a valve means on each wash pipe, inner annulus, and outer annulus, and (b) connecting the valve means in fluid communication with the high pressure fluid pump means for controlling the ingress and egress of the high pressure fluids and removed formation material for forming a sand pack in the well and simultaneously for applying and maintaining a positive fluid pressure against the overburden during work in the well for preventing cave-ins and sloughing of the unconsolidated formation well walls until the sand pack is formed.
REFERENCES:
patent: 1530221 (1925-03-01), Uren
patent: 2205422 (1940-06-01), Layne
patent: 2349062 (1944-05-01), Uren
patent: 3822750 (1974-07-01), Ping
patent: 3951457 (1976-04-01), Redford
patent: 4066127 (1978-01-01), Harnsberger
patent: 4114691 (1978-09-01), Payton
patent: 4124074 (1978-11-01), Allen et al.
Nichols Theron H.
Novosad Stephen J.
Park Jack H.
Ries Carl G.
Texaco Inc.
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