ConocoPhillips group evaluating Alaska hydrate test

05/14/2012
An industry-government group has recovered gas from methane hydrates through a well on the Alaska North Slope in a tightly controlled test in which carbon dioxide and nitrogen were injected and the pressure reduced. Single truckloads of CO2 and nitrogen were injected and then the well pressure reduced via a downhole jet pump in the first test of a technology developed by ConocoPhillips and the University of Bergen, Norway. Earlier theory, based on laboratory studies, held that hydrate response to CO2 injection would be very slow and injection difficult due to low permeability, but experimental and modeling work suggested potential for applications in natural reservoirs that required testi...
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