They say the best place to find new oil and gas reserves is where hydrocarbons already have been found. That’s certainly the case with southeastern Oklahoma’s Arkoma Basin. The town of Seminole, Okla., was a classic boomtown in the 1920s as the surrounding Seminole Field burst onto the energy scene. There’s a reason why the local newspaper is the Seminole Producer. After years of slumber, the area is coming alive again as a new, unconventional shale play. Producers tapping that play are served by a new midstream operator—Valiant Midstream—that, although scarcely a year old, has big growth plans for the region.