<p>I always thought this was just a sub-category of Chemical Engineering yet I'm seeing more and more people treating it as its own category. So, is it or what? </p>
<p>Could a Chemical Engineer get the job of a Petrochemical engineer?</p>
<p>On an unrelated note, how long do you guys think the Petrochemical Engineer's large salary will remain that way?</p>
<p>Petrochemical engineer is a made up term. The engineers who work in refineries are chemical engineers. Those who work in oil fields are petroleum engineers. Petrochemical industry refers to the combination of both.</p>