Nov 19 (Reuters) - U.S. natural gas producers will face billions of dollars in hedging losses for 2022 as the global energy crunch boosts gas prices to multi-year highs, research by consultancy Rystad Energy showed on Friday.

Expectations of strong LNG demand for months boosted U.S. futures to a 12-year high in early October, with prices nearly doubling from last year to trade around $4.94 per million British thermal units (mmbtu) on Friday.

Eleven operators analyzed by Rystad stand to lose more than $5.2 billion in 2022 if the average price at the Henry Hub benchmark terminal remains at $4 per mmbtu, an amount that could double to about $9.8 billion if prices average at $5 per mmbtu.

"Given that the whole strip for 2022 currently remains above $4 per MMBtu..., the current state of the programs is likely to impose a material downward pressure on corporate cash flows of gas producers next year," said Artem Abramov, head of shale research at Rystad Energy.

Rystad said operators had already hedged more than half of their 2022 production when they reported second-quarter results. Prices were trading much lower than the currently inflated levels then.

The significant rise in hedged volume since the second quarter of 2021 was primarily driven by operators including Southwestern, Chesapeake, Range Resources and Comstock Resources.

The share of hedged production for a bulk of those 11 companies was in the 45% to 75% range, while the weighted-average floor price varied in the $2.5 to $3.1 per mmbtu.

(Reporting by Rithika Krishna in Bengaluru; Editing by Devika Syamnath)