Some questions...
...  Why did you rename this to "Oil Reserve"? That's wrong, because they're always, without exception, called "Petroleum Reserve" (short "SPR").
... Why did you tag this as "man_made=works"? This is wrong, because "works" means that something is manufactured there (which is obviously not the case)
... Why did you convert the area to a node (large facilities should be mapped as area, that's more detail; consumers can extract the node if they only need a single coordinate automatically)