DeRun EnergyMWD system is equipped with
international brand of directional sensor and gamma sensor, use US patented
well depth measurement technique and exclusive rotary joint design which make
our system outstanding in oil and gas drilling industry. It has the unique structure
of dropping prevent system allow the down hole parts can be fishing during
sticking.
Measurement
Parameters:
l Inclination
l Azimuth
l Gravity
Tool Face,
l Magnetic
Tool Face,
l Gravity
Sum
l Magnetic
Field Sum,
l Temperature
l Natural
Gamma
l Directional
Gamma
MWD System Specification
& Features:
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 135MPa (20000PSI)
2.Measurement
Accuracy and Range of Directional Probe:
Measurement accuracy of inclination: ±0.1o range: 0-180
Measurement accuracy of azimuth: ±1o range:
0-360
Measurement accuracy of gravity tool face: ±1o range: 0-360
Measurement accuracy of magnetic 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,
8”hole, 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 Directional Gamma:
Measurement range: 0-1500API
Sensitivity: 0.65CPS per API
Measurement accuracy: ±2%
Resolution ratio of thin layer: 8.8” (thin
well, 8”hole, 50%)
Vibration (3 axles): 20g, 50-1500Hz
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