Gazprom OAO (GAZP.RS) called for the government to reach a decision on introducing differentiated mineral extraction tax rates for gas fields on the Yamal Peninsula , in the Far East and East Siberia and on the Arctic shelf, Chief Executive Alexei Miller told reporters in Sochi Friday.

"In order to approve investment decisions for the 2013 program, Dmitry Anatolyevich (Medvedev), it is absolutely essential to resolve the issue of differentiated mineral extraction tax for gas fields on the Yamal Peninsula, in the Far East and East Siberia and on the shelf," Mr. Miller said at a meeting with Russian Prime Minister Dmitry Medvedev and business leaders on Friday.

Mr. Medvedev said the possibility of introducing a differentiated mineral extraction tax rate for selected gas fields needed to be analyzed.

"Yesterday, the first approaches to NRET were discussed at a Cabinet meeting, at which my colleagues made reports, including the finance minister. I suggest continuing this work, including, I have in mind, the idea of analyzing the possibility of introducing an differentiated natural resource extraction tax for selected deposits," Mr. Medvedev said at a meeting of business leaders during the economic forum in Sochi.

The statement was made in response to one by Gazprom chief Alexei Miller, who said that gas production volumes at some fields could be affected in the future if this step is not taken, Interafx reported.