Nan Gall — Energy Systems

measured performance

A comprehensive range of oilfield data acquisition systems

Pressure and Temperature Gauges – Quartz

Pressure and Temperature Gauges are deployed downhole for various applications including:

  • Determining bottom hole reservoir pressure and temperature
  • Production monitoring
  • Gradient surveys

Reservoir capacity and production conditions can be determined by monitoring pressure and temperature trends over time. Nan Gall Energy Systems gauges have leading-edge capability, both measured in terms of performance (for example, temperature rating, pressure rating, accuracy, resolution and drift) and features (sampling, memory size and diagnostics).

The company has invested significantly in gauge designs as part of its overall product development programme with the objective of improving temperature performance, reducing gauge length and improving feature capability. As a result, the Nan Gall Energy Systems gauge product range includes a 200 ̊C-rated gauge and ‘Short’ quartz and strain gauges in addition to standard length gauges, plus features such as gauges with: 0.1-second sampling, 4 million data sets, self-diagnostic capability and up to two years’ downhole battery life. Nan Gall Energy Systems is one of the few companies in the world that has a proven successful track record with 200 ̊C products in the field today.

Nan Gall Energy Systems products can be categorised in two main ways:

  • by deployment method
  • by transducer type

The three main deployment methods are:

  • Memory gauges (slickline and tubing conveyed applications)
  • Surface Read Out (SRO) gauges (electric line applications)
  • Permanent gauges (permanent/smart well installations)

Quartz transducer:

  • Quartz (high accuracy, high resolution, low drift*)

Quartz gauges have significant advantages over strain-based gauges because of their superior accuracy and resolution performance. They have particular benefits for long-term deployment applications because of their ‘low drift’ capability.

(*drift is an acknowledged term in the industry as a measure of ability to maintain calibration)

Product Specification Table

Tool Type Outside Diameter Maximum Pressure Range Maximum Temperature Pressure Resolution Temperature Resolution Long-Term Drift Range
Uni-Slim 10K psi 0.75” (19.05mm) 10,000 psi (690 psi) 302°F (150°C) 0.01psi 0.005°C <> 2psi per annum
Uni-Slim 15K psi 0.75” (19.05mm) 15,000 psi (1380 psi) 351°F (177°C) 0.01psi 0.005°C <> 3psi per annum
Short Quartz 16K psi 1.25” (3.2cm) 16,000 psi (1104 psi) 302°F (150°C) 0.01psi 0.005°C <> 5psi per annum
Standard Quartz 5K psi 1.25” (3.2cm) 1.375” with feed thru 5,000 psi (345 psi) 302°F (150°C) 0.01psi 0.005°C <> 2psi per annum
Standard Quartz 10K psi 1.25” (3.2cm) 1.375” with feed thru 10,000 psi (689 psi) 302°F (150°C) 0.01psi 0.005°C <> 2psi per annum
Standard Quartz 16K psi 1.25” (3.2cm) 1.375” with feed thru 16,000 psi (1103 psi) 351°F (177°C) 0.01psi 0.005°C <> 3psi per annum
Standard Quartz 16K psi 1.25” (3.2cm) 16,000 psi (1103 psi) 392°F (200°C) 0.01psi 0.005°C <> 3psi per annum
Standard Quartz 20K psi 1.27” (3.2cm) 1.375” with feed thru 20,000 psi (1379 psi) 351°F (177°C) 0.01psi 0.005°C <> 4psi per annum
Quartz 25K psi TBC 25,000 psi (1724 psi) 351°F (177°C) 0.01psi 0.005°C <> 5psi per annum
Quartz 30K psi TBC 30,000 psi (2068 psi) 392°F (200°C) 0.01psi 0.005°C <> 8psi per annum

 

 

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