It measures:
l Well Deviation
l Position,
l Gravity Tool Face,
l Magnetism Tool Face,
l Gravity Sum
l Magnetic Field Sum,
l Temperature
l Natural Gamma
l Directional Gamma (equipped with directional gamma probe)
Main Technical Parameters:
1.work environment parameters
Pulser: positive pulse, key type
Size of non-magnetic drill collar: 89mm～229mm(3.5*～9*)
Mud displacement: 10---55L/S
Mud density:1g/cm³～2.1g/cm³(7.5ppg～18ppg)
Sand content : <2%
Working temperature of instrument under the shaft:-30℃～+150℃
Diameter of instrument:Φ48mm andΦ38mm
Pressure resistance of instrument under the shaft: max 138MPa (20000PSI)
2.measurement accuracy and range of direction probe:
Measurement accuracy of well deviation: +0.1o range: 0-180
Measurement accuracy of position: +1o range: 0-360
Measurement accuracy of gravity tool face: +1o range: 0-360
Measurement accuracy of magnetism tool face: +1o range :0-360
3.measurement accuracy and range of gamma probe:
Measurement range: 0-1000API
Sensitivity: 2/API
Measurement accuracy: +2%
Resolution ratio:173mm(6.8")(thin well wall8"well,50%)
Vibration (3 axles):30g, 50-300Hz
Compact: 500g, 0.5mS axle Z
1000g, 0.5mS axle X and Y
4.measurement accuracy and range of direction gamma probe:
Measurement range: 0-1500API
Sensitivity: 0.65CPS per API
Measurement accuracy: +2%
Resolution ratio of thin layer:8.8")(thin well wall8"well,50%)
Vibration (3 axles): 20g, 50-1500Hz
