Wells – Processes – Destroying or dissolving well part
Patent
1986-11-26
1989-04-04
Dang, Hoang C.
Wells
Processes
Destroying or dissolving well part
166 545, 166 558, 166383, E21B 2004
Patent
active
048177253
ABSTRACT:
A down-hole oil field cable abrader having an elongated abrading head pivotally connected at one of its ends to a body attachable to a tubing string. An abrading portion extends axially along the abrading head from its pivotal connection and includes a plurality of abrading elements, similar to the cutting elements on a drill bit, spiralling axially about the abrading head ending in a taper to an area distal to its pivotal connection. The body includes an open interior communicating with an interior of the string and a piston slidably disposed in its open interior for longitudinal movement within the body under the pressure of a fluid in the interior of the tubing string to a position in which a cam ear included with the abrading head and which is positioned to be engaged by the piston may translate the force from the pressure of the fluid, as the pressure moves the piston, into a radial force to bias the abrading head radially outward to a position suitable for cyclically contacting and abrading a cable located down-hole outside the tubing string and alongside the abrading head. In use the abrading head is continuously rotated, causing the cable to become spirally wrapped at least partially around the abrading elements and dragged along the abrading elements, cyclically abrading the cable as the abrading head rotates, until the cable is ultimately severed after a sufficient number of passes have occurred.
REFERENCES:
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C. "Jerry" Wattigny, a part interest
Dang Hoang C.
Pugh C. Emmett
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