Method and apparatus for locating and re-entering one or...

Details Method and apparatus for locating and re-entering one or... Method and apparatus for locating and re-entering one or...

E - Fixed Constructions

21

B

E21B 7/08 (2006.01) E21B 7/06 (2006.01) E21B 41/00 (2006.01) E21B 43/14 (2006.01)

Patent

CA 2120486

In accordance with the present invention, a plurality of methods arid devices are provided for solving important and serious problems posed by lateral (and especially mul- tilateral) completion in a wellbore including methods and devices for re- entering selected lateral wells to perform completions work, additional drilling, or remedial and stimulation work. Methods and devices are described for assisting in the location and re- entry of later- al wells using a guide (148') or mandrel structure. Preferably, the re-entry methods of this invention permit the bore size of the lateral wells to be the same or substantially the same as the vertical wells (154').

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