ExxonMobil: Commercializing SE Asia sour gas resources

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Authors: Robert D. Denton, David W. Maher, Charles J. Mart and Jaime A. Valencia from ExxonMobil Upstream Research Company.

The Controlled Freeze Zone™ technology developed by ExxonMobil provides for the single step removal and liquefaction of carbon dioxide and other acid gas components present in sour natural gas. The resulting high pressure liquid can be readily re-injected for geosequestration or for enhanced oil or gas recovery purposes. The sweet gas can be tailored to meet the pipeline quality requirements for the domestic pipeline systems typically used in Southeast Asia countries like Indonesia, Malaysia and Australia.

In order to expedite and streamline the technology delivery ExxonMobil is developing a standard design using the information obtained from the data we collected from operating our 14 Mscfd (350 kscmd) CFZ™ Commercial Demonstration Plant (CDP) in Wyoming, U.S.A. from 2012 thru 2013. That data confirms that we can build a single train design that can accommodate acid gas (CO2 and H2S) content from 20% to 70+% acid gas in the feed stream.

The standard single train will be sized to produce up to 110 Mscfd (3.1 Mscmd) of natural gas while handling an inlet raw gas rate ranging from as low as 140 Mscfd (4 Mscmd) to as high as 440 Mscfd (12.5 Mscmd). Details on the basis for this design will be presented as well as applications we have investigated for developing resources in Indonesia and in Australia. [Article ends]

Tuesday, October 27th - Robert Denton, Senior Process Consultant at ExxonMobil Upstream Research will be presenting this paper at the CoTEs Programme at Gastech Singapore.

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Image source from ExxonMobil.