GPWDPRESSURE-WHILE-DRILLING TOOL

Instrument Features GPWD

MWD tool compatibility:

  • SIB 2 Family
  • New telemetry platform family and Schlumberger Tools
  • An interface module is required for tool communication
  • Full compatibility using standard extenders

Measured parameters

  • Annular and inner bore pressure and temperature

Basic configuration

Real-time extender connection point

Annular pressure sensor

Inner bore pressure sensor

Electronics modules

Real-time extender connection point


Applications

  • Wellbore cleaning and stability control
  • ROP optimization
  • Early detection of well control situations
  • Underbalanced or managed pressure drilling


GPWD Features & Benefits:

  • 2 independent pressure sensors
  • Memory capacity – 400 hours at 2 s
  • Built-in rechargeable battery for pumpoff pressure measurements (optional)
  • Flexible BHA Configurations
  • Measurement of annular and bore pressure and temperature
  • Real-time data transfer with memory mode
  • Leak-off and formation integrity testing
  • The tool can be placed anywhere in the BHA because of wet-stab electrical connections on both ends

Tool specifications

Nominal OD UOM 4 3/4’’ 6 3/4’’ 8 1/4’’
Maximum flow rate gpm (lps) 380(24) 1109(70) 1395(88)
Maximum operating pressure psi (MPa) 8702 (60) 8702 (60) 14504 (100)
Maximum sand content % 3 3 3
Maximum LCM tolerance No restrictions on volume
Working temperature range (°С) +5 … +125
Maximum OD in (mm) 4.82 (122.6) 7.16 (182.0) 8.46 (215.0)
Minimum tool length ft (m) 6.3 (1.92) 6.53 (1.99) 6.72 (2.05)
Maximum DLS, rotating / sliding °/100ft (30m) 15 / 30 8.1 / 15 6.9 / 14.1
Memory capacity Mb 13 (~400 hrs @ 2s update rate)

Measurement Specifications

Parameter UOM Range
Pressure psi (MPa) 0…8702 (0…60 )
Pressure resolution psi (kPa) 0.87 (6.8 )
Pressure accuracy % ± 0.15
Temperature °F (°С) -40...+257 (-40 … +125 )
Temperature resolution °С 0.1
Temperature accuracy % 1
Pressure update rate s 2
Temperature update rate s 20

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