Method for drawing up special crude oil

Wells – Processes – Separating material entering well

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166369, E21B 4340

Patent

active

049192078

ABSTRACT:
The present invention is directed to a method for drawing up a special crude oil which is characterized by comprising the steps of extracting and separating a gas oil from a crude oil containing a great deal of wax or a high-viscosity crude oil which has been drawn up through an oil well, and drawing up the crude oil containing a great deal of wax or the high-viscosity crude oil, while injecting a part of the thus separated gas oil into the oil well. For the extraction and separation of the gas oil, a recycle oil is employed.

REFERENCES:
patent: 4501445 (1985-02-01), Gregoli
patent: 4697426 (1987-10-01), Knowles, Jr.

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