The development of shale plays resulted in an 11% increase, to 284 Tcf, in US proved natural gas reserves in 2009, the highest level since 1971, the US Energy Information Administration said in a report released Tuesday.
Louisiana led the nation in additions of proved gas reserves with a net increase of 9.2 Tcf, or 77%, mostly due to the Haynesville Shale. Arkansas (Fayetteville Shale) and Pennsylvania (Marcellus Shale) nearly doubled their reserves with increases of 5.2 Tcf and 3.4 Tcf, respectively, EIA added. The figures reflect "wet" gas reserves, including gas liquids.
Those increases occurred "despite a 32% decline in the natural gas wellhead prices used to assess economic viability for 2009 reserves as compared to the prices used in reserves reporting for 2008," EIA said.
Proved reserves of crude oil climbed 9% to 22.3 billion barrels. Texas had the largest increase, while North Dakota recorded the second-largest, largely due to the Bakken Shale, EIA said in its report: "Summary: US Crude Oil, Natural Gas and Natural Gas Liquids Reserves, 2009."
Louisiana led the nation in additions of proved gas reserves with a net increase of 9.2 Tcf, or 77%, mostly due to the Haynesville Shale. Arkansas (Fayetteville Shale) and Pennsylvania (Marcellus Shale) nearly doubled their reserves with increases of 5.2 Tcf and 3.4 Tcf, respectively, EIA added. The figures reflect "wet" gas reserves, including gas liquids.
Those increases occurred "despite a 32% decline in the natural gas wellhead prices used to assess economic viability for 2009 reserves as compared to the prices used in reserves reporting for 2008," EIA said.
Proved reserves of crude oil climbed 9% to 22.3 billion barrels. Texas had the largest increase, while North Dakota recorded the second-largest, largely due to the Bakken Shale, EIA said in its report: "Summary: US Crude Oil, Natural Gas and Natural Gas Liquids Reserves, 2009."
