Swabbing tool for wells

Details Swabbing tool for wells Swabbing tool for wells

2005-06-07

2005-06-07

Bagnell, David (Department: 3672)

Wells

With eduction pump or plunger

Having sediment trap or deflector

C166S105200, C166S177300

Reexamination Certificate

active

06901999

ABSTRACT:
A swabbing tool for wells that filters particulates from fluids passing through the swabbing tool. The swabbing tool comprises a mandrel, at least one swab cup on the mandrel, the mandrel and swab cup being arranged to allow fluids to pass from below to above the swab cup; and a sifter attached to the swabbing tool below the swab cup for filtering particulates from fluid passing from below to above the swab cup. The sifter is barrel shaped and is provided with a sealing element attached to the sifter to force fluid into the sifter. The sifter has an interior and the sealing element is dimensioned to seal against a casing or tubing wall and force fluid into the sifter. The openings in the sand sifting element may be slots, with a size between 0.125 mm to 0.635 mm.

REFERENCES:
patent: 5119874 (1992-06-01), Ferguson et al.
patent: 5553669 (1996-09-01), Trainer
patent: 6145590 (2000-11-01), Havard
patent: 6619390 (2003-09-01), Kellett, III
H. Bogart; B. Jacobs; K. MacPhail, M. Malone, G. Sonnleitner; “Testing of Wire Rope Sockets”; Engineering Science Laboratories, Montana Tech, May 2, 1984.
Bruce Levan; “Preliminary Analysis of a Sand Line”; Canspec Group Inc, Jul. 6, 1999.
David R. Hall; “Electromagnetic Inspection of Wire Ropes Vertical Lift Bridges”, Jun. 2002.

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