The oil giant will need to cut its debt quickly after closing its CrownRock deal.Occidental Petroleum (OXY -0.46%) is no stranger to making big moves. It agreed to buy CrownRock for $12 billion last year. Meanwhile, it outbid Chevron to buy Anadarko Petroleum for$55 billion in 2019. Like the Anadarko deal before it, Occidental is using a lot of debt to fund its CrownRock purchase. That will likely lead to another big move by the oil giant. I predict it will sell its stake in master limited partnership (MLP ...