: These consist of formation characteristics, such as rock hardness (unconfined compressive strength), pore pressure, and depth.
Maya ignored conventional wisdom that blamed "hard rock." Instead, she plotted — the energy required to destroy a unit volume of rock. Real-time MSE was running 40% above the theoretical minimum. applied drilling engineering optimization pdf
Maya tracked cost per foot (CPF) hour by hour. Initially, CPF was $300/ft at 28 ft/hr. After 40 hours, ROP fell to 18 ft/hr, and CPF rose to $450/ft. Meanwhile, the cost to trip out and in was $80,000. : These consist of formation characteristics, such as
: The majority of "Applied Drilling Engineering" papers are hosted by the Society of Petroleum Engineers (SPE) . Maya tracked cost per foot (CPF) hour by hour
MSE acts as a "drilling efficiency thermometer." If actual MSE > theoretical, change parameters or bit design.