| 摘要 |
Well treatment method and apparatus for chemically inhibiting downhole production equipment with corrosion inhibitors. Water is separated from the produced well fluid, and the flow rate and corrosive properties of the separated water is measured. Inhibitor solution is then injected into the stream of water in an amount which is proportional to the corrosive measurement of the water, thereby providing the exact amount of chemical treatment required to avoid downhole corrosion. The inhibitor and the water are intimately mixed, and the mixture is flowed into the casing annulus. The conductivity of the produced fluid is measured, and the measurement is used to adjust the rate of flow of the separated water to a value which assures that the mixture of water and inhibitor flow down through the hydrocarbons contained in the casing annulus. This enables the inhibitor and water mixture to fall through the hydrocarbons contained in the well annulus and arrive at the casing perforations during an interval of time which is less than the time lapse required for the inhibitor to leave the mixture and become admixed with the hydrocarbons contained within the annulus.
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