http://www.amarillo.com/stories/041507/bus_7268053.shtml Roberts (Lard Ranch Granite Wash 'C') Grayhawk Operating, Inc., #302 Lard Ranch, Sec. 2,-,BBB&C, spud 12-5-06, drlg. compl 12-29-06, tested 2-12-07, potential 7011 MCF, MD 10530', PBMD 10380' – Horizontal
I know next to nothing about the subject, but based on the reference above, the measured depth (MD) = 10,530 feet with the PBMD at 10,380 feet (horizontal).
Sorry, I cannot be of more help but perhaps a more knowledgeable “soul” will jump in, but I hope this will give you a lead.