Aghajari Gas Injection Project

Client: Petroleum Engineering & Development Co. (PEDEC)
Contract Period: 36 Months
Commencement Date: May 2001
Type of Contract: EPC (Engineering, Procurement, Construction)
Location: Aghajari Oil Field, Iran
Partners: Hirbodan & Chegalesh Companies.

Project Outline

Natural gas from South Pars Gas Field largely is slated to be shipped north for home and industrial consumption via a planned 56 inch, 512 kilometer, IGAT-3 pipeline. The gas, mainly from phases 6, 7 & 8 of South Pars Gas Field (Assaluyeh), will also be reinjected to boost output at the huge Aghajari field. The pressure of the gas entering Aghajari Gas Injection station is increased 240 bars by seven turbo-compressor units in two stages, transported out of the station by means of two 24-inch North-South pipelines and injected into 22 oil wells.

Scope of Work

  • Basic Engineering
  • Detailed Engineering
  • Procurement
  • Manufacture, Installation and Start-up

Air Cooler

Each set of turbocompressors is equipped with two air coolers known as stage 1 and stage 2 air coolers. The first and second stage air coolers, which operate with 37 KW, 400 volt motors; respectively cool the compressed fluid by increasing its pressure initially 140 bars and then 258bars to achieve the desired temperature. Each cooler has four impellers and four motors. Pressure Vessel There are 22 pressure vessels at the gas injection station, including:

  • KO drum of stage 1: 7 units
  • KO drum of stage 2: 7 units
  • Fuel KO drum: 1 unit
  • Fuel LP KO drum: 1 unit
  • Flare KO drum: 1 unit
  • Air receiver: 1 unit
  • Feed-line scrubber: 1 unit
  • Instrument air: 1 unit
  • Nitrogen storage vessel: 2 unit

Storage Tank

There are five storage tanks at the gas injection station, including:

  • A 4750-cubic meter fire-fighting water tank
  • A 100-cubic meter diesel fuel tank
  • A 72-cubic meter fresh turbine oil tank
  • A 72-cubic meter used turbine oil tank
  • A 71-cubic meter drinking water tank

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