* Hydrocarbon reserves rose 2.5 pct under PRMS
* Reserves replacement ratio 163 pct under PRMS
* Shares outperform broader market
MOSCOW, Feb 8 Rosneft (ROSN.MM) kept its grip
firmly on the top spot among world's publicly traded oil
companies as it reported on Monday a 2.5 percent rise in
hydrocarbon reserves for 2009 under PRMS rules.
The state-controlled firm has been a chief driver behind
Russia's recent surge in oil output, which last month remained
above 10 million barrels per day, mainly thanks to Rosneft's
huge newly commissioned Arctic Vankor field.
In January, Rosneft also announced the discovery of a new
field in East Siberia, Sevastyanovo, that analysts said could
potentially add 4 percent to Rosneft's proven and probable
reserves, as the field's reserves are estimated at 150 million
On Monday, Rosneft reported a 163 percent reserves
replacement ratio under the Petroleum Resources Management
System (PRMS) criteria in 2009.
Russia's largest oil company said in a statement its proved
reserves under the PRMS methodology, formerly known as SPE,
stood at 22.858 billion barrels of oil equivalent (boe), up 2.5
percent from 22.307 billion boe in 2008.
Under the more stringent U.S. Securities and Exchange
Commission's (SEC) methodology, which takes into account
reserves extractable during the life of companies' existing
licences, Rosneft's reserves rose to 15.146 billion boe from
14.448 billion boe in 2008.
The reserves audit, performed by DeGolyer and MacNaughton,
confirmed Rosneft was first among public oil companies in terms
of oil reserves, under both PRMS and SEC standards.
Rosneft said its hydrocarbon reserve life was 26 years, 23
years for oil and 66 years for gas, under the PRMS rules.
Shares in Rosneft were up 1.05 percent on Russia's top MICEX
bourse by 0830 GMT, outperforming the broader MICEX oil and gas
index .MCXOG, which rose by 0.80 percent.
(Reporting by Vladimir Soldatkin; Editing by Rupert Winchester)