Reinjection Plant

What it is

Re-injection is used as a method of enhanced oil recovery to compensate for the natural decline of an oil field production by increasing the pressure in the reservoir, thus restoring the desired level of production and stimulating the recovery of additional crude oil.

Using this technique the field exploitation can be increased by up to 20%.

How it works

The gas that is re-injected is usually the associated gas separated from the crude oil in the flash and stabilization phases. Other gases, such as nitrogen, or carbon dioxide, may also be used. The gas is re-injected into the reservoir in dedicated wells and forces the oil to migrate toward the well bores of the producing wells.

Recent material technology advances allow associated sour gases containing high percentages of H2S and/or CO2 to be re-injected without the need for sweetening.

Depending on the depth and physical characteristics of the field, very high injection pressures may be required. High pressure barrel compressors are normally used in this application, or in the case of moderate gas flows reciprocating compressors may be selected.

GE Oil & Gas is a world leader in high pressure re-injection, having set technical milestones since the early 70's. In 2005 GE set another new milestone with the test of the highest pressure centrifugal compressor ever built (820 bar discharge pressure) handling an extremely sour gas with 18% H2S. Water injection is another method used for enhanced oil recovery. The production water separated from the crude oil is filtered, treated and then re-injected into the reservoir by means of high pressure centrifugal pumps.

GE Oil & Gas Offerings

  • Gas Turbine Packages for power generation (10 to 34 MW)
  • Mechanical Drive Gas Turbines (10 to 34 MW)
  • Centrifugal Compressors and Reciprocating Compressors
  • Centrifugal Pumps
  • High Power Variable Frequency Drives
  • Compression/Pumping packages
  • Compression islands
  • Modularized Compression and Power-Gen solutions
  • Air Cooled Heat Exchangers
  • Control and Safety Valves
  • Product Installation & Maintenance Services
  • Revamps & Rerates
  • Contractual Service Agreements
  • Technical Training

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