Method and apparatus for air development and rejuvenation of wat

Details Method and apparatus for air development and rejuvenation of wat Method and apparatus for air development and rejuvenation of wat

1976-05-10

1977-08-09

Novosad, Stephen J.

Wells

Processes

Cleaning or unloading well

166 68, 166222, 166314, E21B 3700, E21B 4300, E21B 4325

Patent

active

040404862

ABSTRACT:
Slugs of high pressure air at pressures of about 2000 psi (150 atmosphere) are jetted against the screen of the casing or well wall in the aquifer of a water well. Fine material washed from the aquifer by this procedure is picked up from the bottom of the well by an airlift pump. The development of a new well will remove the mud cake from the bore and, also, rearrange fines and silt that were in the aquifer before drilling. On old cased wells, the procedure will remove algae and rust from the screen of the casing, rearrange the gravel pack around the screen and, remove silt and fines that have gathered within and around the gravel pack.

REFERENCES:
patent: 2768694 (1956-10-01), Moll et al.
patent: 3729054 (1973-04-01), Yokoyama
patent: 3760878 (1973-09-01), Peevey
patent: 3853176 (1974-12-01), Henrich

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