Ditch Witch JT20 - Manual (Page 103)

Conduct a Bore - 102
JT20 Operator’s Manual
Record Bore Path
CMW
®
Record Bore Path
Locate drill head every half-length of pipe. As the job is completed, record the actual data for each drill
pipe. List pitch and depth of each joint and a brief description of the procedure. In addition, draw a simple
sketch of the site and record depth and rough location of pullback.
The Trac Management System Plus is also available for plotting and tracking your bore path. It utilizes the
Subsite 750 Tracker, 750 Display, a tracking beacon, and special software. The display can store jobs in its
memory or the system can be run in the field using a laptop computer equipped with the Windows
®
95 or
higher operating system. See your Ditch Witch
®
dealer for details.
Surface Drill Head
1. Guide drill head to target pit or up through surface. Make all bends gradual.
2. If using tracker control mode, tracker operator turns off tracker to disable drilling unit thrust/pullback
and rotation hydraulics. Tracker operator waits for green light to enter pit and change tools.
If not using tracker control mode, tracker operator signals to drilling unit operator to stop engine before
changing downhole tools.
3. Turn fluid flow control to off position as soon as drill head emerges.
4. Clean drill head especially around threads.
5. Disconnect EZ-Connect joint or use quick wrench to remove drill head. Keep threads clean.
Moving tools will kill or injure. Shut off drill string power when anyone can
be struck by moving or thrown tools. Never use pipe wrenches on drill string.
Turning shaft will kill you or crush arm or leg. Stay away.
To help avoid injury:
• Tracker operator and drill operator should maintain two-way communication.
• Keep everyone clear of the exposed drill string.
• No one should enter pit until clear communication is given by the drill operator that the drill unit is
shut down. If using tracker control (See “Tracker Control” on page 123.), do not enter pit until tracker
control is turned off and green light on drill unit is lit.
• Drill operator should be instructed to discontinue drill string rotation as soon as drill bit exits the
bore. Use thrust only to extend drill string beyond exit hole.