DownholeSurvey Probe:

Shock mounted triaxial accelerometers and magnetometers, temperature sensor, and digitizing circuitry contained in 1.750 in. dia. x 55.3 in. long beryllium copper pressure barrel.  Telemetry and power via wireline.

Temperature Rating: 85C

Pressure Rating: 1200 bar


Survey Accuracy:

Inclination: +/- 0.15⁰

Azimuth: +/- 0.4 

Toolface: +/- 0.5

Maximum Wireline length: 5000 meters


Interface Unit:

Input: 85-265 VAC 50-60HZ

Output: 48VDC, 50mA


Guidance System:

A single signal wire earthed at each end or with a return loop of wire to close the loop.

Guidance Unit Input: 85-265 VAC 50-60HZ

Guidance Unit Output: 43 VRMS, 6 Amps p-p max.

Position Accuracy: +/- 2% of separation from signal wire


Drillpipe and Borehole Pressure Module:

(requires compatible survey probe)

High Range Module:

Borehole Annulus Gauge: 0-1000 psi Full Scale, 3000 psi survival, 5000 psi burst

Drillpipe Gauge: 0-3300 psi Full Scale, 10000 psi survival, 10000 psi burst.

Non-linearity: +/- 0.1% FS

Hysteresis: +/- 0.015% FS

Repeatability: +/- 0.01% FS


Beacon Tracking System:

Solenoid length: 49 inches (2 per system)

Solenoid Weight: 67lbs. (2 per system)

Input Voltage: 12 VDC, 7 amps (typical small automotive type battery)

Maximum Range: 300 ft.

Precision: Away, Elevation, Right +/- 2% of BTS to PT Tool distance

Drilling Azimuth Determination: (relative to solenoid axis): +/- 1°

Survey time: 20 seconds