ShaleConocoPhillips completes its $9.5bn purchase of Shell's Permian basin assetsDeal covers 225,000 acres in the prolific Permian basinDone deal: ConocoPhillips has completed its acquisition of Shell's Permian basin assets for $9.5 billionPhoto: EOIN O'CINNEIDE/UPSTREAMJennifer PresleyHouston