Lateral lengths in Q4 2017 averaged 7,700’, up 10% from the prior year. However, no operators drill 7,700’ laterals; instead, lateral lengths tend to either be 5,000’, 8,000’ or 10,000’ long, distances which have changed very little for several years. Can the Pythagorean Theorem explain typical lateral lengths What is driving the increase in average lateral length and will this change going forward? Does the segmentation of the horizontal market in terms of lateral length mean a segmentation of the OFS industry serving the horizontal market? Will a 4 th category of lateral lengths emerge – say 15,000+ laterals? What might happen to lateral length when input costs – directional drilling day rates, frac sand prices, etc. – begin to rise faster than oil prices? Produced by Charlie Spears & Sponsored by Oilfield Logix