Throttle unit for dump bailer and method of blocking a water...

Details Throttle unit for dump bailer and method of blocking a water... Throttle unit for dump bailer and method of blocking a water...

2007-08-03

2010-06-15

Bagnell, David J (Department: 3672)

Wells

Receptacles

Lateral ports used in well

C138S043000, C138S046000

Reexamination Certificate

active

07735550

ABSTRACT:
A method of blocking a water out zone in a production well includes the steps of connecting a throttle unit to a dump bailer, wherein the throttle unit is internally defined a flowing space, which can be adjusted in size to thereby control a flow rate of cement for blocking the water out zone; loading the cement into the dump bailer; slowly lowering down the loaded dump bailer to the water out zone in the production well; opening an outlet of the dump bailer under control, so that the cement flows from the dump bailer into the throttle unit and is released at a flow rate preset by adjusting the size of the flowing space; allowing the released cement to load up in the water out zone and slowly permeate into a gravel layer in the production well before becoming cured to block the water out zone.

REFERENCES:
patent: 1698826 (1929-01-01), Shaffer
patent: 2000750 (1935-05-01), Gates
patent: 3311131 (1967-03-01), Zahuranec
patent: 6595281 (2003-07-01), Beach
patent: 7108071 (2006-09-01), Freiheit et al.

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