"We have not yet reached guaranteed stability and we are prepared to clarify our position on this issue," Interfax quoted Sechin as saying.
"When we say there's a problem, we also propose a solution. We have even agreed to co-financing," Sechin said.
The supply of "technical gas" to Ukraine -- the gas needed to ensure transit supplies are pumped through its pipeline system -- was a major sticking point in the stand-off that led Russia to sever supplies to Europe for two weeks in January.
At the time, Ukraine said Russia should supply this gas free of charge, a demand that was rejected by Moscow.
In a sign relations might be thawing, Ukrainian Prime Minister Yulia Tymoshenko, visiting Moscow on Wednesday, welcomed Russia as a key partner in the EU-backed renewal of its gas pipeline network.
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