Optical Pass-Thru Pressure/Temperature Gauge

Optical sensors fulfill the promise of permanent reservoir monitoring to enable better production and reservoir management decision-making. The Weatherford optical pass-thru pressure/temperature gauge has been designed for life-of-field reliability, unmatched stability, and ease of use in multiple applications. The pass-thru pressure/temperature gauge allows multiple gauges to share a common optical fiber, increasing the number of measurement points along the well bore. The expanded number of pass-thru temperature gauges enables multi-zone intelligent well production and reservoir monitoring applications.

Applications for the Optical Pass-Thru Pressure/Temperature Gauge

• All current and well-known electrical gauge applications:
  • In-well flowing pressure measurement
  • Reservoir pressure determination during shut-ins
  • Data for pressure transient analyses - skin, permeability and reservoir boundary determination
  • Management and control of well ramp-up
  • Interference test and reservoir connectivity determination
• Seamless integration with other Weatherford optical sensors, e.g., DTS, flow and phase fraction meters, and seismic systems
• Each of the downhole optical cable’s single mode optic fibers can support up to three pass-thru pressure/temperature gauges
  • Up to six pressure/temperature measurement points with DTS
  • Up to nine pressure/temperature measurement points without DTS
• Subsea wells where reliability and longevity are crucial

Optical Pass-Thru Pressure/Temperature Gauge Features, Advantages, and Benefits

• High reliability - minimum component count, no moving parts
• Electronically passive - no electronics downhole
• High immunity to pressure surges
• Extremely high measurement stability - no measurable drift
• Chemically inert - minimum corrosion compatibility problems
• Robust - industry’s highest mechanical shock and vibration survivability
• Standard footprint - same handling and installation as electronic gauges
• Immune to electromagnetic interference
• Multiple pressure/temperature measurement points per fiber
• High reliability results in unsurpassed performance over lifetime of well
• Shock resistance means no problems with perforating or hydraulic fracturing operations
• Immeasurable drift means no concerns about absolute pressure and temperature measurement over life-of-field
• Minimum impact on completion design and installation
• No electromagnetic interference issues with ESP or other electrical completion components
• Real-time reservoir pressure results in:
• Reduced well interventions
• Reduced shut-ins
• Optical in-well system means all complex components are conveniently located at surface.

Overview
Specifications