9412 Dipmeter

Background Information
The Dipmeter tool is a formation strike and dip directional probe primarily used in mining and environmental logging applications. Additionally, the tool also records natural gamma, X-Y calipers, and borehole deviation is computed from the slant angle and bearing measurements calculated from the inclinometer and magnetometer sensors. To ensure accurate strike and dip measurements in small-diameter holes, special care should be taken when calibrating the calipers to maximize their accuracy. Caliper arms open fully within one minute.
Features
Properties Measured (see diagram) Tool Specifications
1.   Slant Angle Bearing:
Offset: 67 cm (26.4 in.)
2.   Natural Gamma:
2.2 x 8.9 cm (0.875 x 3.5 in.)
NaI (TI) Scintillation
Offset: 149 cm (58.92 in.)
1.   Slant Angle Bearing:
Offset: 67 cm (26.4 in.)
3.  Independent X-Y Calipers:
Maximum 30 cm (12 in.) Hole Diameter
Offset: 305 cm (120 in.)
4.   4-pad Micro Resistance:(Current)
Offset: 305 cm (120 in.)
 Length: 324.7 cm (127.82 in.)
Temperature: 85 C (185 F)
Diameter: 69 mm (2.75 in.)
Pressure: 176 kg/cm2 (2500 PSI)
Weight: 29.9 kg (66 lb.)
Logging Speed:
Maximum: 5.5 m/min. (18 ft./min.)
Minimum: 2.7 m/min. (9 ft./min.)
Tool Voltage Required: 85 VDC (at Top Sub)

 

Sensor Response Ranges
Sensor Response Limits Accuracy
Natural Gamma (NG) 0 to 10,000 API units +/-5%
X & Y Caliper (XCAL & YCAL) 6.4 to 30.5 cm (2.5 to 12 in.) +/-0.5 cm (0.2 in.)
Micro Resistance (MR)(Current) 0 to 10,000 ua +/-5%
X-Y Inclinometers (XYI) 0 to 90 degrees +/-0.5 degrees
Azimuth (AZ) 0 to 360 degrees +/-2 degrees

 

Tool Information
Item Model # Part #
Tool with NG, XCAL, YCAL, 4-MR, XYI, AZ 9412 323100
Deviation Calibration Test Stand   317420
Protective Sleeve (used when logging in Tar Sands ONLY)      Optional 323026 
           

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