Researchers injected 210,000 cubic feet of carbon dioxide and nitrogen into the underground reservoir through perforated pipe. Instruments measured pressure, temperature and produced gases. They tracked injected gases without fracturing the formation.
Scientists collected data from 30 days of methane production, five times longer than anyone had done before. They are now trying to determine if methane produced was from an exchange with CO2, a reaction to the nitrogen, or a reaction to pressure changes down the hole.
Researchers are optimistic.
‘‘From the lab data we had, it seemed like it was some strong evidence that it was not a lot of wholesale destruction of the solid hydrate,’’ Boswell said.