There's no evidence the US's motive or achieved outcome of the war was oil.

Seems "he tried to kill my father, now there's an excuse to take him out and turn his country into a democracy in the region, and a US-aligned entity" explains most of it.

Much like Trump, it's pettiness and prestige and a notion of more points on the board. (Though Trump did in fact attack Venezuela for oil, or possibly more so just to publicly boast about taking their oil and seem strong to his fans.)