Magazine June 2009

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Gas Compression at Offshore (Part 1)

The main purpose of gas compression at offshore are below:

1. Gas Export
2. Gas Injection to well
3. Gas lift
4. Fuel gas

Compressors are generally classified as reciprocating or centrifugal machines. Reciprocating compressors are generally very robust design. However centrifugal compressors have fewer moving parts and reliable.

Reciprocating Compressor

Reciprocating compressor use positive displacement principle. Generally, reciprocating compressor has low speed compared with a centrifugal compressor

Single acting compressor

Double acting compressor

Double acting compressor has suction and discharge stoke at same time. For every cylinder stoke, one side of compressor discharges compressed gas while the other opposite side is on the suction stoke and vice versa.

Continue with:
Gas Compression at Offshore (part 2)

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