Automatic chemical treatment system with integral flush...

Details Automatic chemical treatment system with integral flush... Automatic chemical treatment system with integral flush...

2008-01-15

2008-01-15

Bagnell, David (Department: 3672)

Wells

Processes

Entraining or incorporating treating material in flowing...

C166S090100, C166S053000, C166S304000, C166S902000

Reexamination Certificate

active

10990617

ABSTRACT:
A wellbore chemical treating system includes a pressure vessel for containing a treating chemical. The pressure vessel is closed to atmospheric pressure. A first controllably operated valve is disposed in direct fluid communication between an outlet of the pressure vessel and a well for selectively controlling the flow of the chemical from the pressure vessel to the well. A pressurized gas is disposed in the pressure vessel wherein the pressure exerted by the pressurized gas causes the chemical to flow from the pressure vessel to the well through the first valve when the first valve is opened. A second controllably operated valve is disposed in fluid communication between the well and an outlet of a fluid tank for selectively controlling flow of fluid in the tank to the well. The fluid tank is replenished by fluid produced from the well. The system includes a controller for selectively operating the first valve and the second valve.

REFERENCES:
patent: 3053320 (1962-09-01), Steincamp
patent: 4064936 (1977-12-01), McClure
patent: 4436148 (1984-03-01), Maxwell
patent: 4830112 (1989-05-01), Erickson
patent: 5209298 (1993-05-01), Ayres
patent: 5209300 (1993-05-01), Ayres
patent: 2002/0027002 (2002-03-01), Carmody et al.

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