Santos is officially the owner of ConocoPhillips’ oil and gas assets in northern Australia and Timor-Leste after completing a $US1.265 billion ($1.9 billion) deal. Due to an unstable market environment and the deferral of a final investment decision (FID) at the Barossa project, Santos and ConocoPhillips agreed to decrease the previously announced $US1.39 billion upfront …