Microseismic Borehole Sensors – Built to Order

Low temperature network geophone

Low Temperature Network Geophone

  • Passive, 3 component geophone. 2 elements / axis
  • Typical sensitivity. 57.6 V/m/s
  • Dimensions. 50mm OD, 0.4m length
  • Overall temperature rating. 50°C
  • Pressure rating 7 MPa (1000 psi) at 25°C
  • Cable. 3 shielded, twisted pairs and overall screen
  • Construction. Kevlar strain member. Polyurethane sheath
  • Cable termination. O ring seals
High temperature wireline geophone

High Temperature Wireline Geophone

  • Active, 3 component geophone. 1 sensor / axis
  • Typical sensitivity. 1600 V/m/s at 200°C including downhole gain
  • Dimensions. 87.5mm OD, approximately 1m length
  • Overall temperature rating. 200°C
  • Pressure rating 25 MPa (3600 psi ) at 25°C
  • Cable. High temperature 7 conductor wireline
  • Cable construction. According to borehole fluid
  • Cable termination. Pressure balanced, 7 pin
High temperature wireline accelerometer

High Temperature Wireline Accelerometer

  • Active, 3 component accelerometer. 1 sensor / axis
  • Typical sensitivity. 100 V/g including downhole gain
  • Dimensions. 72.5mm OD, approximately 0.7m length
  • Overall temperature rating. 150°C
  • Pressure rating 35Mpa (5100psi) at 25°C
  • Cable. High temperature 7 conductor wireline
  • Cable construction. According to borehole fluid
  • Cable termination. Pressure balanced, 7 pin

Hostile Environment Geophone

  • Active, 3 component geophone. 1 sensor / axis
  • Typical sensitivity. 1600 V/m/s at 200°C including downhole gain
  • Dimensions. 92mm OD, approximately 0.85m length
  • Overall temperature rating. 200°C
  • Pressure rating 103 MPa (15000 psi ) at 25°C
  • Cable. High temperature 7 conductor wireline
  • Cable construction. According to borehole fluid
  • Cable termination. Pressure balanced, 7 pin.
High Temperature Trigger Geophone

High Temperature Trigger Geophone

  • Passive vertical component geophone. 1 sensor
  • Typical sensitivity. 14 V/m/s at 25°C
  • Dimensions. 43mm OD, approximately 0.3m length
  • Overall temperature rating. 200°C
  • Pressure rating 103 MPa (15000 psi ) at 25°C
  • Cable. High temperature monoline
  • Cable construction. According to borehole fluid
  • Cable termination. Gearhart Owen single pin