Well bore conditioning devices

Claim 1

A ROTARY-VERTICAL WELL-BORE CONDITIONER FOR USE WITH A WELL-CASING COMPRISING A SPIRAL ELEMENT SHAPED TO EXTEND AXIALLY ALONG AND ARCUATELY ABOUT A SECTION OF THE WELLCASING, SAID ELEMENT CONSISTING OF AN INVERTED U-SHAPED CHANNEL INTEGRALLY PROVIDED ALONG ITS LONGITUDINAL MARGINS WITH FLAT OUTWARDLY FLARING FLANGES ADAPTED TO SEAT FACEWISE AGAINST THE OUTER CYLINDRICAL SURFACE OF THE WELLCASING, SAID U-SHAPED CHANNEL BEING PROVIDED WITH SPACED PAIRS OF APERTURES ALONG ITS LENGTH, MEANS LOCATED AT AXIALLY SPACED INTERVALS ALONG THE SPIRAL ELEMENT FOR RIGIDLY SECURING THE SPIRAL ELEMENT TO THE WELL-CASING AT SUCH AXIALLY SPACED INTERVALS WHILE LEAVING THE SPIRAL ELEMENT FREE FOR LIMITED AXIAL MOVEMENT IN BETWEEN SAID AXIALLY SPACED INTERVALS, AND STRAND-LIKE LIMBER WIRE CABLE WHICH IS BACK-LOOPED THROUGH THE PAIRS OF APERTURES AND EXTENDING OUTWARDLY THEREFROM IN A PLURALITY OF LOOSE LOOPS, SAID WIRE CABLE EXTENDING CONTINOUSLY ALONG THE SPIRAL ELEMENT FOR THE ENTIRE LENGTH THEREOF AND BEING FREE IN SAID APERTURES FOR LIMITED END-TO-END MOVEMENT.