SureDrill-VMS™

CAPTURE CRITICAL PERFORMANCE AND FAILURES DATA EVERY 20 SECONDS

The SureDrill™ Vibration Memory Sub (VMS™) is a standalone downhole tool that measures, calculates and records axial, lateral and angular down-hole vibrations for retrieval and analysis at the surface. The VMS allows operators to assess the severity of downhole drilling shock and vibration, including stick-slip and whirl, and correlate the data to drilling events and equipment performance or failures.

CALCULATED VIBRATION DATA

Every 20 seconds, the microprocessor calculates and stores:

• Maximum lateral acceleration – vector sum of X- and Y-accelerometer measurements
• RMS lateral acceleration
• Maximum half-second RMS lateral acceleration
• Maximum axial vibration – from z-accelerometer
• RMS axial acceleration
• Maximum half-second RMS axial acceleration
• Maximum and minimum angular speed (RPM)
• Stick-slip ratio and other rotational parameters
• Absolute date and time