@book{197446,
	author = {Stroever, Matt},
	title = {Dual cutting structure on hybrid roller cone bit increases efficiency of bridge, frac plug drill-outs},
	year = {jul./ago. 2016},
	note = {4 ½-in. bit drilled frac plugs at average of 8.1 min/plug in 57-well study in Eagle Ford}
}