Mideastern oil, obviously.
It's from Heritage which is reputable but very right, so this might be not so much.
Thus, I have not done a deep dive on this, if anything Damon-related could be deep, but from the story:
" A new film starring Matt Damon presents American oil and natural gas producers as money-grubbing villains purportedly poisoning rural American towns. It is therefore of particular note that it is financed in part by the royal family of the oil-rich United Arab Emirates. …
While left-leaning Hollywood often targets supposed environmental evildoers, Promised Landwas also produced “in association with” Image Media Abu Dhabi, a subsidiary of Abu Dhabi Media, according to the preview’s list of credits. A studio spokesperson confirmed that AD Media is financing the film. The company is wholly owned by the government of the UAE."