- Title : Petroleum & Gas Field Processing 10 by H.K. Abdel-Aal and Mohamed Aggour - King Fahd University of Petroleum & Minerals Dhahran, Saudi Arabia, M.A Fahim Kuwait University Safat, Kuwait
- Publish : Marceld Ekkeirn, C New York Basel
- Type Document : pdf
- Release : December 2003
- Total Page : 6 page
- Size : 0.26 Mb
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Decrypted Contents
Overview of Gas Field Processing
PLANNING THE SYSTEM
Part IV of the book is devoted to field treatment and processing operations of natural gas and other associated products. These include dehydration, acidic gas removal (H2S and CO2), and the separation and fractionation of liquid hydrocarbons [known as natural gas liquid (NGL)].
Part IV of the book is devoted to field treatment and processing operations of natural gas and other associated products. These include dehydration, acidic gas removal (H2S and CO2), and the separation and fractionation of liquid hydrocarbons [known as natural gas liquid (NGL)].
Sweetening of natural gas almost always precedes dehydration and other gas plant processes carried out for the separation of NGL. Dehydration, on the other hand, is usually required before the gas can be sold for pipeline marketing and it is a necessary step in the recovery of NGL from natural gas.
For convenience, a system involving field treatment of a gas project could be divided into two main stages, as shown in Figure 1:
For convenience, a system involving field treatment of a gas project could be divided into two main stages, as shown in Figure 1:
- Stage I, known as gas treatment or gas conditioning
- Stage II, known as gas processing
The gas treatment operations carried out in stage I involve the removal of gas contaminants (acidic gases), followed by the separation of water vapor (dehydration), as explained in Chapters 11 and 12, respectively. Gas processing, stage II, on the other hand, comprises two operations: NGL recovery and separation from the bulk of gas and its subsequent fractionation into desired products. The purpose of a fractionator’s facility is simply to produce individual finished streams needed for market sales.
Fractionation facilities play a significant role in gas plants, as given in Chapter 13. Gas field processing in general is carried out for two main objectives:
- The necessity to remove impurities from the gas
- The desirability to increase liquid recovery above that obtained by conventional gas processing
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