PHYSICAL:
LENGTH: 27.15 INCHES (INCLUDING PRESSURE BARREL)
DIAMETER: 1 3/8 INCHES

FUNCTIONS:
The WELNAV MST-1, Mini-Steering Tool is an all-attitude tri-axial steering tool. It is designed for short radius and short distance drilling applications. Typical applications include:
Short Radius Directional Drilling
Short Distance River Crossing Directional Drilling
Mining Applications
Single Conductor Borehole Directional Surveys

The Mini-Steering Tool power consumption is low enough that the entire system with remote readout, computer and printer can be powered from the cigarette lighter of a car or truck.

ALL-ATTITUDE OPERATION:
The MST-l operates in any attitude.
INCLINATION: 0° (down) to 180° (UP) degrees
DIRECTION: 0°-360° Degrees Azimuth
TOOL FACE: -180° TO +180° Degrees Hi-Side or Magnetic

TEMPERATURE:
MST-l to 125°C
MST-2 to 70° C
(A Heat shield can he used for operation to 315°C)

PRESSURE RATING:
22,000 Max PSI Design rating

WIRELINE VOLTAGE AT PROBE:
20-25 VDC
WIRELINE CURRENT:
150 MA

CONNECTION TO SPACER BAR:
1 INCH - 8 TPI PIN DOWN

WIRELINE CONNECTION:
G-O 1 7/16" O.D. CABLE HEAD BOX UP

SINGLE CONDUCTOR SPACER BAR:
Used where Cable head and Cable are magnetic.