On Shore Drilling 23 Drill Rigs Make/Model: Acker Soil max Drill Rigs, Made in USA (1993 to 2013) Acker MP8 Drill Rig, Made in USA (2013) Simco SK-2400 Drill Rigs, Made in USA (1998) Simco SK-2800 Drill Rigs, Made in USA (2010) Acker Coremax Drill Rig, Made in USA (1995) SIMCO Drill Rig, Made in USA (2013)