Pressurized chemical injection system
OwnerRobert N. Ayresinventor
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Abstract
An apparatus and method for injecting chemicals into a hydrocarbon producing well is disclosed. The invention includes a valve attached to a vessel. A chemical is contained by the vessel, and a pressurized gas in the vessel pressurizes the chemical. The valve can be operated to selectively control the release of the chemical from the vessel and into the well. The pressurized gas drives the chemical through the valve and into the well without releasing the chemical into the ambient environment.
Claims20
An apparatus for selectively injecting a chemical into a well, comprising:
- a pressure vessel for containing the chemical, wherein said pressure vessel is closed to atmospheric pressure;
- a conduit between said pressure vessel and the well for transmitting the chemical from said pressure vessel to the well;
- a valve in fluid communication with said conduit for selectively controlling the flow of chemical from said pressure vessel;
- and
- a pressurized gas in said pressure vessel for causing the chemical to flow into the well as said valve controls the flow of chemical from said pressure vessel.
An apparatus for continuously injecting a chemical into a well, comprising:
- a pressure vessel for containing the chemical, wherein said pressure vessel is closed to atmospheric pressure;
- an outlet attached to said pressure vessel for permitting the chemical to exit said pressure vessel;
- a conduit connected between said outlet and the well for transmitting the chemical from said pressure vessel to the well;
- a valve connected to said conduit for selectively controlling the flow of chemical from said pressure vessel;
- a pressure gas in said pressure vessel for causing the chemical to flow into the well through said valve and said conduit;
- and
- means for injecting chemical into said pressure vessel.
A method for injecting a chemical into a well, comprising the steps of:
- placing a pressurized gas into a pressure vessel which is closed to atmospheric pressure;
- injecting a quantity of chemical into the pressure vessel so that the pressurized gas exerts a pressure on the chemical;
- and
- operating a valve in fluid communication with the chemical and the well to selectively control the flow of the chemical into the well as the pressurized gas causes the chemical to exit the pressure vessel.
Dependencies are inferred from the claim text.