Rio Bravo Oil Inc. (OTCBB: RIOB) has completed drilling its first horizontal Edwards formation well, the DG Tiller #4H.

The well demonstrated the presence of hydrocarbon during drilling and has the potential to produce 150 barrels of oil per day and to cumulatively produce up to 250,000 barrels of oil. The well is located within the Salt Flat Field in Luling, Texas. Well completion will conclude this week, and the well will be placed on production. The company estimates that it will be able to determine the optimal production level ...