Quantum™ Geothermal PT Gauge
Enables precision pressure temperature surveys in ultra-high temperature environments
Applications
- Geothermal
- Gradient surveys
Features and Benefits
- Operating temperatures up to 662°F (350°C) makes it suitable for geothermal and high temperature wells
- Capable of operating in both memory and surface readout mode, offering operational flexibility
Tool Description
The Weatherford geothermal PT gauge is a subsurface high-temperature memory tool designed to continuously measure and record downhole pressure and temperature.
The PT gauge has excellent thermal protection from temperatures up to 662°F (350°C). A fast response temperature sensor (RTD) provides a high accuracy temperature profile of the well.
Communication is via USB interface and the tool is powered using AA cell batteries.
Specifications
Ratings and dimensions
Outer diameter | 1.75 in. (44.45 mm) |
Length | 59.0 in. (1.49 m) |
Weight | 28.0 lb (12.7 kg) |
Maximum temperature | 4 hours at 662°F (350°C) |
Pressure range | 8,500 psi (58.6 MPa) |
Hardware characteristics
Transducer type | Pressure: Piezo resistive | Temperature: RTD |
Battery type | AA Lithium / Alkaline Carrier | |
Materials | Inconel 825/Hastelloy (NACE MRO 175) | |
Connections | Top: 5/8 in. API Pin (Memory Configuration) | |
Pressure measurements
Pressure range | 0 to 5,000 psi / 0 to 8,500 psi |
Sampling rate | 1 sps |
Resolution | 0.0003% F.S. |
Accuracy | 0.024% F.S. or 0.05% F.S. |
Temperature measurements
Maximum temperature | 4 hours at 662°F (350°C) |
Resolution | 0.0018°F (0.001°C) |
Accuracy | ± 0.449°F (± 0.25°C) |
Response time | 1.5 sec / 10°C |
Electrical specifications
Consumption | 3.6V |
Maximum data | 8,000,000 sets |
Interface | USB URod |
Application
Acquisition Mode | Memory / SRO |
Logging time | 4 hr at 662°F (350°C), 6 hr at 572°F (300°C) |
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