Shell Western E&P Inc. has begun work to expand its carbon dioxide flood in Wasson field's Denver Unit, Yoakum and Gaines counties, Tex., to include the western portion of the unit as well as the eastern. Shell expects the expansion, which will cost about $100 million, to boost recovery to about 60% of original oil in place and extend field life by at least another 25 years (OGJ, Feb. 12, Newsletter). The Denver Unit CO2 flood is the world's largest in terms of enhanced production. The planned expansion includes, among several other things, an increase in the unit's CO2 recovery plant inlet capacity to 290 MM...

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