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SureLog-DDM™

DRILLING INSIGHTS THAT REDUCE DOWNTIME

APS’s Drilling Dynamics Monitor (DDM™)* sub measures and records weight on bit, torque on bit, bending on bit, internal and annular pressure and temperature during drilling operations.

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DDM measures and records weight on bit, torque on bit, bending on bit, internal and annular pressure and temperature, all in real time.

  • Captured data may be transmitted in real time via APS’s SureShot™ MWD/LWD system, or stored in the DDM’s downhole memory for later download and analysis.
  • Can be equipped with vibration monitoring to measure, calculate and record axial, lateral and angular downhole shock and vibration.
  • Real-time vibration alarms may be transmitted via SureShot.

Available sizes: 4.75 in. (121 mm), 6.75 in. (172 mm) and 8.0 in. (204 mm).

TOOL SPECIFICATIONS

Weight on Bit 4-3/4 in. 6-3/4 in. 8 in.
Operating Range ± 30,000 lbs ± 60,000 lbs ± 100,000 lbs
Accuracy ± 5% absolute ± 5% absolute ± 5% absolute
Repeatability ± 1% absolute ± 1% absolute ± 1% absolute
Resolution 1% 1% 1%
Torque on Bit
Operating Range ± 14,000 ft-lbs ± 30,000 ft-lbs ± 50,000 ft-lbs
Accuracy ± 5% absolute ± 5% absolute ± 5% absolute
Repeatability ± 1% absolute ± 1% absolute ± 1% absolute
Resolution 1% 1% 1%
Bending on Bit
Operating Range ± 11,000 ft-lbs ± 45,000 ft-lbs ± 45,000 ft-lbs
Accuracy ± 5% absolute ± 5% absolute ± 5% absolute
Repeatability ± 1% absolute ± 1% absolute ± 1% absolute
Resolution 1% 1% 1%
Pressure – Bore & Annulus
Operating Range 0-20,000 psi 0-20,000 psi 0-20,000 psi
Accuracy 0.1% FSR 0.1% FSR 0.1% FSR
General
Borehole Size Range 5-1/4 in. to 6-1/2 in. 8-3/8 in. to 9-7/8 in. 10-5/8 in. to 17-1/2 in.
Connection 3-1/2 IF 4-1/2 IF 6-5/8 Reg.
Nominal O.D. 5.25 in. / 4.90 in. necks 7.25 in. / 6.91 in. necks 8.22 in. / 8.00 in. necks
Nominal I.D. 1.50 in. 3.25 in. 2.813 in.
Nominal Length (Shoulder – Shoulder) 84.0 in. 84.0 in. 92.5 in.
Memory 32 MB 32 MB 32 MB
Material P550 P550 P550
Environmental
Max. Sliding
Bend Radius[1]		 24.0˚/100 ft 22.0˚/100 ft 20.0˚/100 ft
Max. Rotating
Bend Radius[1]		 12.0˚/100 ft 10.0˚/100 ft 8.0˚/100 ft
Operating
Temperature		 -15˚C to 150˚C
175˚C Option		 -15˚C to 150˚C
175˚C Option		 -15˚C to 150˚C
175˚C Option
Max. Survival Pressure 26,500 psi 26,500 psi 26,500 psi

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Enhance Your Drilling Performance At Every Turn

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