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Rig Technology Changes the Landscape

The New York Times reported recently that the number of mobile or “walking” drilling rigs in operation now exceeds the number of conventional rigs, by 650 to 500. “Pad drilling” — the drilling of multiple wells from a single pad site — has now become the norm in unconventional plays, and these walking rigs make drilling from a single pad site more economical and efficient. Moving a rig to a new location now takes a matter of hours instead of days. The new rigs cost up to $20 million. The increased effeciency of these rigs has actually reduced the rig count while increasing the number of wells drilled, and has caused the Energy Information Administration to develop a new rig-efficiency measure.  The combination of walking rigs and multi-well drillsites results in significant reductions in drilling costs. Continental Resources, the largest player in the Bakken, says it now can drill 14 wells from a single pad.

EIA’s new Drilling Productivity Report shows how the new technology has affected production in the major shale plays. Here is its graph for the Eagle Ford:

EIA Eagle Ford Well Efficiency.JPG

Here is an annual comparison for several shale plays:

EIA Well Efficiency.JPG


Not necessarily good news for drilling companies, but good news for exploration companies and royalty owners.


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