Challenges for Processing Oil and Gas from Kazakhstan
Presented at Warsaw Conference, September 2005 by Paul Roberts, Parsons E&C Corporation, UK
In recent years WorleyParsons has been involved in the design of several large (multi billion dollar) oil and gas processing plants in Kazakhstan.
This paper looks at the processing requirements needed for typical sour reservoir fluids in Kazakhstan. These are typified by high hydrogen sulphide levels and modest amounts of carbon dioxide along with organic sulphur. The plants were also at remote locations which along with the difficulty of bringing in large and heavy equipment meant that preference was given to reliable technologies with a proven track record.
A number of options have been considered for designs to meet the oil and gas specifications in terms of acid gas/ mercaptan specification and also for dew point/ vapour pressure. The benefits and drawbacks of each option have been discussed and the reasons for going ahead with a particular design have been explained