E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 7/18 (2006.01) E21B 7/00 (2006.01) E21B 10/60 (2006.01)
Patent
CA 2630223
A bottom hole assembly connected to coiled tubing to create an acid tunnel in a wellbore formation. High pressure acid is pumped down the coiled tubing and out a nozzle located at the end of the bottom hole assembly. The bottom hole assembly includes a first knuckle joint and a second knuckle joint to properly position the nozzle against the wellbore. The two knuckle joints increases the radius of curvature of the bottom hole assembly while providing a sufficient attack angle for the nozzle against the wellbore. The two knuckle joints also may reduce the chance that the nozzle will cam lock within the acid tunnel. The two knuckle joints may be oriented such that they bend within the same plane. The nozzle may be connected onto the end of wand having a telescoping portion. The nozzle may be adapted to form an elliptical acid tunnel.
Crabtree Alexander Raphael
Misselbrook John Gordon
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Bj Services Company
Bj Services Company Canada
LandOfFree
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