Perforation cleaning tool

Details Perforation cleaning tool Perforation cleaning tool

1991-06-17

1992-08-04

Bui, Thuy M.

Wells

With motor for rotary or oscillating motion

166171, E21B 3700

Patent

active

051350513

ABSTRACT:
In accordance with an illustrative embodiment of the present invention, a well perforation cleaning tool includes a fluidic oscillator that creates pressure changes which induce cyclical stresses in the damaged skins of the perforations and causes the skins to disintegrate in order to improve the productivity of the well. Cylindrical filter tubes having a plurality of sets of slots are adjustably mounted at the upper and lower ends of the tool to provide resistances which confine the pressure changes to the immediate vicinity of the perforated interval.

REFERENCES:
patent: 1230666 (1917-06-01), Carden
patent: 1333390 (1920-03-01), Dickinson
patent: 2574141 (1951-11-01), Brown
patent: 2661065 (1953-12-01), McCoy

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