Nabors Drilling USA, also known as NDUSA, markets a range of land rigs to address the drilling challenges of oil and gas drilling areas in the United States. The company operates more than 300 drilling rig. It offers high-pressure equipment, including choke manifolds, specialty drill pipes, bottomhole assemblies and diverter systems on a rental basis. Nabors Drilling USA s equipment engineering and technical services group implements process improvements through equipment upgrade and rapid reapplication. It is a part of Nabors Industries, which is one of the largest land drilling contractors in the world. The parent company maintains over 520 marketed and drilling rigs.