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Dewpoint Control - Pakistan

Application Dew Point Control Plant
Client Siwa Petroleum for Weatherford Oil Tools
Location Pakistan
Oil & Gas Processing
Size 400-450 HP
Compressor Manufacturer Howden WRVi series
Method LPG Recovery

Significant Environmental Challenges

The Pakistan Petroleum Limited (PPL) Adam X-1 Hala Early Production Facility project involved extremely precise dewpoint control for a site with significant environmental challenges.

The location has high ambient temperatures ranging from 55-120 °F (12-49 °C). The site is prone to earthquakes, flooding and high winds.

Liquid Petroleum Gas Recovery

The client required a very tightly defined liquid composition to be recovered from a 15 MMSCFD sweet gas flow and a sour produced liquid feed

The Pakistan Liquid Petroleum Gas Recovery project demonstrates Startec's proven capabilities in:

  • Creating precise, high capacity dewpoint control plants / propane refrigeration facilities
  • Engineering solutions to accommodate extreme conditions: severe temperatures, high winds, earthquake-prone locations
  • Developing modular components to fit compact overseas shipping containers
  • Designing, building and commissioning international projects

Equipment

  • 2 - 400 HP Propane Refrigeration Trains
  • Gas Exchangers & Low Temperature Separator
  • LPG Production Train
  • Two Distillation Towers:
    - De-ethanizer Tower - Diameter 24 inches, Height 90 feet
    - De-butanizer Tower Diameter 36 inches, Height 60 feet
  • Liquids Sweetening Tower Diameter 14 inches, Height 40 feet
  • Glycol injection system
  • PLC control system to control and monitor the complete dewpoint plant

Engineering & Design Factors

  • High capacity propane refrigeration plant required to achieve client's exact liquid composition parameters in high ambient temperature environment
  • Structural design to withstand earthquakes, flooding and high winds
  • All components designed to fit compact containers to allow for truck, rail and sea transport, and to minimize the client's overseas shipping costs

Fabrication

  • The plant was fabricated as a modular system to balance shipping costs and freight flexibility

Operational Issues

  • The equipment and control system design was based on two production cases, allowing sufficient flexibility to cater for the significant turndown between the initial and final phases

"News Article"

To read an article with more background on this project from our customer, please click here to visit Weatherford's website.

Contact Startec

To discuss the specifications of your dewpoint control projects, contact a Startec Oil & Gas Customer Representative at 403.295-5855 or toll free at 1-800-555-9439

 

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