Down-hole well cleaning tool

Details Down-hole well cleaning tool Down-hole well cleaning tool

2006-05-23

2006-05-23

Bagnell, David (Department: 3672)

Wells

Processes

Cleaning or unloading well

Reexamination Certificate

active

07048056

ABSTRACT:
A down-hole well tool is disclosed for removing debris from a well utilizing low pressure/suction. More particularly, the tool is adapted to generate the low pressure within a well bore for removing debris while being interconnectable to the end of a single duct tubing that extends to the surface. Use of the low pressure/suction allows removal of debris without of forcing such debris into the permeable formations of the well. In one application, the tool may be utilized during open-hole completion processes. In another application, the tool may be utilized to clean existing wells.

REFERENCES:
patent: 2290141 (1942-07-01), Burt
patent: 2946565 (1960-07-01), Williams
patent: 4223747 (1980-09-01), Marais
patent: 4630691 (1986-12-01), Hooper
patent: 5069285 (1991-12-01), Nuckols
patent: 5158140 (1992-10-01), Ferry
patent: 5269384 (1993-12-01), Cherrington
patent: 6250389 (2001-06-01), Sudol

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