METHOD FOR PREVENTION OF PARAFFIN DEPOSITION IN OIL WELLS WITH PACKERS Russian patent published in 2018 - IPC E21B37/00 

Abstract RU 2671873 C2

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the oil and gas producing industry, in particular to preventing the deposition of paraffins in wells with abnormally low temperatures. Method includes supplying a driving fluid from the storage means to an ejector device having a converging portion for supplying a driving fluid, an expandable portion for withdrawing the driving fluid and a narrow part with an aperture located between the converging portion and the expanding portion; removing water and steam from the annulus of the oil well having packers by means of an ejector device where the flow of the driving fluid through the convergent portion and the expanding part of the ejector device creates a pressure drop and increases the velocity of the driving fluid, which creates a vacuum in the narrow part, accompanied by the evacuation of water and steam from the intertubular space of the oil well, thus eliminating paraffin deposition in oil wells having a packer.

EFFECT: increased effectiveness of preventing the deposition of paraffins.

6 cl, 3 dwg

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RU 2 671 873 C2

Authors

Dhodapkar, Prashant

Dates

2018-11-07Published

2015-02-04Filed