Sidetracking - Extreme Networks PowerDrive Orbit Quick Operation Manual

PowerDrive Orbit & X6
1. After ensuring that the tool has been powered up and the correct quiet time has passed, as shown
in the following chart, send command 2-29, PowerV Unlock/Engage to the tool.
2. Stabilize the stand pipe pressure by keeping steady flow for the quiet period given in the following
table:
3. Send command 2-29 again, PowerV Unlock/Engage, to the tool. Note: It is critical that this downlink
is started within the range provided in the table.
PowerV mode is now engaged.

3.8 Sidetracking

All PowerDrive tools can be used to sidetrack a well. Typical sidetrack applications are a cement plug,
either in a vertical or deviated well or an open hole sidetrack, however in the case of an open hole side
track more care is required. Factors affecting the success of a sidetrack are the strength of the cement
plug, the existing hole profile, formation drillability and ensuring that adequate time is taken. Although
successful sidetracks have been achieved at all inclinations, both from cement plugs and open hole,
there are some situations where it will not be possible to sidetrack, such as soft cement and hard
formations.
Sidetrack off a cement plug
All PowerDrive tools can be used to sidetrack a well from a cement plug, either in a vertical or deviated
well. Open hole sidetracks can be performed, but more care is needed. As a guideline, the following
procedure should be used if there is no previous experience of successful sidetracking. Use of real-time
inclination will give an early indication of the progress of the sidetrack. Note: Cement cannot be pumped
though any PowerDrive system. There is a risk of plugging the tool and BHA and causing serious
damage to the internal components.
1. After making up the BHA, and before any circulation is attempted, make sure that the drillpipe is
clean and clear of any cement debris that may have accumulated when the cement plug was being
pumped. Use drillpipe rubber or sponge balls behind the cement when displacing to clean the
drillpipe.
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Quick Operations Guide - rev1.4
Page 19 of 35