Drying, filtering and liquefaction in the oil & gas industry

Quality and composition based measurement of liquefaction

After well-head processing, natural gas is collected and typically delivered to the liquefaction plant by pipeline. The delivered quantity is measured in a custody transfer metering skid, and analyzer instrumentation determines the composition and quality. Before the main liquefaction processes, various filters and scrubbers complete the drying, and remove impurities such as mercury, H2S and CO2.

Requirements

  • High accuracy measurement of natural gas
  • Need for diagnostics to ensure measurement accuracy
  • Custody transfer measurement in case of changing ownership

Requirements

  • Accurate level measurement for optimal process control

Requirements

  • Flow measurement of clean and dry gas for optimal operation
  • Continuous measurement of feed gas

Requirements

  • High accuracy measurement for optimal cooling performance
  • Continuous measurement for optimal process control

Requirements

  • High accuracy measurement of high value product
  • Continuous measurement for optimal process control

Requirements

  • Level measurement to prevent overfill
  • Inventory measurement

Requirements

  • Prevent leakage or dry run from compressor sealing shaft

Requirements

  • Cryogenic temperatures (<-162°C)
  • Risk of overfill or dry run
  • Inventory measurement

Requirements

  • Cryogenic temperatures (<-162°C)
  • Process control

Requirements

  • Visualisation and monitoring of critical processes
  • Control of reporting, trends and alarm handling
  • Statistical evaluation of measurement data

Requirements

  • Integration of flow computers, PLCs, supervisory computers and printers
  • Installation of single flow computers up to fully redundant cabinet

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