Schramm Inc., a manufacturer of mobile, land-based hydraulic drilling rigs, has appointed Bobby Bryan to the newly created position of COO. The company, based in West Chester, PA, said Bryan would immediately assume responsibility over operations, engineering, aftermarket and sales, and would report directly to CEO Ed Breiner. Bryan previously served several posts at National Oilwell Varco (NOV), most recently as NOV's vice president for business development.