| 摘要 |
A device for continuously adding chemicals to a producing oil well to prevent the formation of paraffins, emulsions, scale and to prevent corrosion is described. The device includes an above gorund mixing chamber having an inlet and an outlet. A portion of the flow of production oil is diverted from the production tubing to the inlet. Chemicals are added in the mixing chamber, and the mixture is then flushed down through the well casing to the bottom of the well to be pumped up the production tubing. The device includes a sight glass on the mixing chamber to visually observe the mixture, a bleed valve on the mixing chamber to remove samples and the like, and a pressure gauge for registering the internal pressure within the chamber. A line check valve is provided at the inlet to close the inlet in the case of excessive back pressure to prevent a flow of chemicals back through the inlet, and a choke with a predetermined orifice is provided at the outlet to regulate the flow rate therethrough.
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