Exxon to Drill 4 more Wells to Appraise Liza"Upstream previously reported that ExxonMobil intends to drill at least four more wells on its 6.6-million acre Stabroek block. These will appraise Liza an Upper Cretaceous discovery and also target an exploration prospect called Ranger, a different play concept from the initial hit. Sources familiar with the geology of the trend said they believed the reservoir would produce light oil with low viscosity that could flow at rates of anywhere from 15,000 to 20,000 barrels per day from a single well."