Multiple phase 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 first vessel for containing the chemical, a second vessel for containing a pressurized gas, a conduit for permitting the pressurized ga to pressurize the chemical, and a valve for selectively permitting the chemical to exit the first vessel The pressurized gas drives the chemical through the valve and into the well without releasing the chemical into the ambient environment.
Claims18
An apparatus for selectively injecting a chemical into a well, comprising:
- a first pressure vessel for containing a quantity of the chemical, wherein said first pressure vessel is closed to atmospheric pressure;
- a second pressure vessel closed to atmospheric pressure;
- flow communication means connected between said first pressure vessel and said second pressure vessel;
- a pressurized gas located in said second pressure vessel, wherein said pressurized gas is in liquid and gaseous states, and wherein said pressurized gas communicates pressure to the chemical through said flow communication means;
- and
- a valve in fluid communication with said first pressure vessel and the well for selectively permitting the chemical to exit said first pressure vessel, due to pressure induced by said pressurized gas, and to enter the well.
A method for continuously injecting a chemical into a well, comprising the steps of:
- installing the chemical into a first pressure vessel which is in fluid communication with a valve, wherein said first pressure vessel is closed to atmospheric pressure;
- injecting a pressurized gas into a second pressure vessel, which is closed to atmospheric pressure, so that said pressurized gas contacts the chemical through a flow communication means connected between said first pressure vessel and said second pressure vessel;
- and
- operating said valve to selectively permit the chemical to exit said first pressure vessel and to enter the well as said pressurized gas urges the chemical from said first pressure vessel.
Dependencies are inferred from the claim text.