OSLO/WARSAW (Reuters) -Norway’s Equinor said on Friday it had entered into a 10-year agreement to sell natural gas to Poland’s PGNiG as the central European nation scrambles to replace flows from Russia before the winter heating season kicks in. The deal covers a volume of 2.4 billion cubic metres per year, or around 15% of Polish annual consumption, the two companies said. “The contracts we have just signed … (result) in a significant strengthening of energy security of our country,” PGNiG Chief Executive Iwona Waksmundzka-Olejniczak said in a joint statement with Equinor. The gas will be t…