Wells – Processes – Cleaning or unloading well
Patent
1988-12-14
1991-12-03
Dang, Hoang C.
Wells
Processes
Cleaning or unloading well
166 68, 166105, 166177, 166372, E21B 3708
Patent
active
050692852
ABSTRACT:
Well development tooling particularly useful in medium size wells has a suction head or a development head which may be fitted to an eduction pipe. The eduction pipe is made from serially connectible double walled pipe sections with an inner conduit surrounded by a coaxial outer conduit. The outer conduit of each section extends beyond the inner conduit. The outer conduit is threaded on each end so that a removable slip connector joins the inner conduits of adjacent pipe sections when the outer conduits are screwed together. The eduction pipe has an eduction nozzle for redirecting fluid from the outer conduit upwardly into the inner conduit to create an eduction effect in the inner conduit for drawing well fluid upwardly out of the well. The development and suction heads have a fluid conduit which may be connected to the inner conduit of the eduction pipe. The development head has a wiper which slides against the walls of the well.
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patent: 4763728 (1988-08-01), Lacey
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