Combined notching and jetting methods and related apparatus

Details Combined notching and jetting methods and related apparatus Combined notching and jetting methods and related apparatus

E - Fixed Constructions

21

B

E21B 29/06 (2006.01) E21B 29/08 (2006.01) E21B 43/16 (2006.01)

Patent

CA 2333250

An apparatus and several methods for forming one or more channels from an existing cased wellbore are disclosed. In one embodiment, the apparatus includes a notching device for forming an opening in the casing and having an integral guide shoe portion for guiding a nozzle to a position adjacent the opening to form the channel. The related method may involve lowering this apparatus into the well and then performing the notching or jetting operation, or separately lowering a notching device and a guide shoe, each carried on the end of a tubing, into the well. A guide shoe capable of positioning the nozzle close to the opening in the casing, such as one formed during the notching process, is also disclosed.

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