Page 405 - Practical Well Planning and Drilling Manual

Section 3 revised 11/00/bc 1/17/01 12:00 PM Page 381

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3.4

Casing

3.4.1. Conductor Placement

There are three current techniques of setting conductor pipe: jet-
ting in, piledriving or drilling, and cementing to surface. Criteria for
drilling, jetting, or driving relate to the desired setting depth and
whether the topsoil conditions allow jetting or driving to this depth
without damaging the conductor drive shoe. (Refer to the information
on individual casing points in Section 1.4.6.)
Offshore conductor; preparation for the job. The job can be done
faster and cheaper if the proper preparations are made. Preparations in
advance of the rig arrival include the following:

1. Make a decision on what connections will be used and where the
conductor will be welded while driving. If welded, then the pipe
ends should be prepared by beveling for welding before sending to
the rig. Otherwise, a beveling machine needs to be sent out. If
connections are to be used then all the information and equip-
ment needed to run the connection has to be organized.

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