PARIS, July 29 (Reuters) - French utility Engie said on Friday it was well prepared for a reduction in deliveries of Russian gas, as its first-half profits surged on the back of higher energy prices.

Engie added it was working with the Belgian government over the possible extension of two nuclear units.

Engie's net income for the six months to June 30 rose to 5 billion euros ($5.1 billion) from 2.3 billion a year earlier, as energy companies around the world have cashed in on a sharp rise in oil and gas prices following Russia's invasion of Ukraine.

"We have taken actions to significantly reduce and minimize our exposure to Russian gas and the H1 performance announced today positions us well to deliver strong results in 2022, despite uncertainties from the prevailing energy market context," said Engie CEO Catherine MacGregor.

($1 = 0.9791 euros) (Reporting by Benjamin Mallet; Editing by Sudip Kar-Gupta/Dominique Vidalon)