Wells – Processes – Vibrating the earth or material in or being placed in the...
Patent
1996-03-22
1998-03-17
Suchfield, George A.
Wells
Processes
Vibrating the earth or material in or being placed in the...
166 685, 1661772, 166311, E21B 3708
Patent
active
057276285
ABSTRACT:
An apparatus for cleaning wells using ultrasonic waves includes a plurality of magnetostrictive ultrasonic transducers and a water pump. The ultrasonic transducers are arranged in one or more planes and carried by an adjustment mechanism to allow the cleaning unit to be adjusted to different well diameters, while ensuring that each transducer remains properly oriented to direct the ultrasonic waves perpendicularly at the well casing from an optimum spacing distance. Any desired number of ultrasonic transducer modules can be connected together in the axial direction to ultrasonically clean a portion of the well having a desired axial length in each operating step. The ultrasonic transducers are operated with a power density of 8 to 12 W/cm.sup.2 of ultrasonic emitting surface area, at a frequency in the range of 18 to 25 kHz and preferably 20 kHz. In a first operating step, the ultrasonic transducers ultrasonically treat a first section of the well. In a second operating step of a first embodiment, the cleaning unit remains in the same location and the pump sucks out the dirty water from the ultrasonically treated first section. In a second operating step of another embodiment, the apparatus is first lowered by one working step distance and then the pump is operated to suck out the dirty water.
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Fasse W. F.
Fasse W. G.
Suchfield George A.
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