Multiple chamber chemical injection system
OwnerRobert N. Ayresinventor
Life of this patent
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Abstract
An apparatus and method for injecting chemicals into a hydrocarbon producing well is disclosed. The invention includes a vessel which is divided with a baffle into a first chamber and a second chamber. The chemical is installed in the first chamber, and a pressurized gas is injected in the second chamber. A valve is connected to the first chamber to selectively control the injection of chemical into the well as the pressurized gas urges the baffle to pressurize the chemical within the first chamber.
Claims20
An apparatus for selectively injecting a chemical into a well, comprising:
- a pressure vessel having a movable baffle defining a first chamber for holding the chemical and defining a second chamber separated from said first chamber, wherein said pressure vessel is closed to atmospheric pressure;
- a valve in fluid communication with said first chamber and with the well for selectively permitting the chemical to exit said first chamber;
- and
- a pressurized gas located in said second chamber for moving said baffle to pressurize the chemical, thereby causing the chemical to exit said first chamber through said valve and to enter the well.
An apparatus for selectively injecting a chemical into a well, comprising:
- a pressure vessel closed to atmospheric pressure;
- a baffle comprising a rigid member and a seal between said rigid member and the interior wall of said pressure vessel, wherein said baffle defines a first chamber within said pressure vessel which is segregated from a second chamber within said pressure vessel;
- means for installing the chemical within said first chamber of said pressure vessel;
- a pressurized gas within said chamber of said pressure vessel for moving said baffle to pressurize the chemical within said first chamber;
- and
- a valve in fluid communication with said first chamber and the well for selectively controlling the flow of chemical from said first chamber and into the well as said pressurized gas moves said baffle.
A method for injecting a chemical into a well, comprising the steps of:
- installing a quantity of chemical into the first chamber of a pressure vessel having a movable baffle which separates said first chamber from a second chamber, wherein said pressure vessel is closed to atmospheric pressure;
- injecting a pressurized gas into said second chamber of said pressure vessel so that the pressure induced by said pressurized gas urges said baffle toward the chemical;
- and
- operating a valve in fluid communication between said first chamber and the well for selectively controlling the flow of the chemical from said first chamber and into the well as said pressurized gas urges said baffle toward the chemical.
Dependencies are inferred from the claim text.