The sale involves Sanchez’s Javelina region, which stretches across La Salle and Webb counties. : Houston-based oil and gas exploration company Sanchez Energy is selling 39,500 acres in the Eagle Ford Shale oil field for $105 million, the company said. The sale involves Sanchez’s Javelina region, which stretches across La Salle and Webb counties, an area full of mostly dry natural gas. “Over the last eighteen months we leased approximately 70,000, largely contiguous, net acres in the dry gas window of the Eagle Ford,” said Tony Sanchez, III, Sanchez Energy’s CEO.