The multibillion-dollar acquisitions that have become almost routine in the upstream sector the past few years are typically accompanied by asset rationalization — in other words, a thoughtful look at which elements of the pro forma company make sense followed by the divestiture of those that don’t. In many cases, a key aim of that rationalization process is trimming any debt associated with the acquisition itself. In today’s RBN blog, we’ll discuss the big steps Chevron has been taking to rework its portfolio — and sell off up to $15 billion in assets — as it inches toward closing on its $60 billion purchase of Hess Corp.