The potential for the Tuscaloosa Marine Shale (TMS) tight-oil play to become the next big thing in U.S. oil production is attracting exploration and production companies willing to put some money at risk in the hope of big payoffs. The TMS seems to have a lot going for it. The play in central Louisiana and southwestern Mississippi is said to have seven billion barrels of oil in place deep below ground but only a stone’s throw from the pipeline networks, terminals and refineries of the Gulf Coast. But succeeding in TMS requires overcoming the play’s challenging characteristics through nuanced drilling techniques and completion formulas. Today in the second part of our series on TMS we examine what the E&P pioneers have accomplished so far in drilling and production, what they’re learning from their experience, and what it would take to turn TMS’s potential into reality.