Petroleum is part of the -m Editions rares trio, an experiment in marrying brutalist bilge notes to classical structures typical of HdP. One's liking of these experiments, then, depends on one's opinion on such marine notes. I am hypersensitive. That said, I do admire the effect of Petroleum. The union of bilge notes with the now pervasive synthetic oud-roses creates the feeling of entering a dark, cold, damp, frightening cave. Everything is there: the fresh, cold air (the ozonic effect highlighted by alfarom), a strong metallic, mineral material, the mold, and some unindentified decaying organism. Not that I would ever wear this, but smelling it on paper is interesting - in the same sense that smelling Secretions Magnifiques is. Relative to the sister Ambrarem, this at least seems to have a coherent structure and an interesting purpose. The neutral rating is an average. As something to wear, this is strongly negative. As an experiment, it is positive. The point is, HdP seems to present this as a straight up, real perfume, not as a conceptual exercise (like Sec Mag), so the first criterion (wearability) is included. cacio