In the old days (2007), one rig drilled one well, taking about 45 - 60 days, and then took a few days to tear down, move a mile down the road to the next section to the next well site, and then re-build the rig, and then drilling a second well, taking another 45 - 60 days. And then repeat.
Now, one rig will drill a well in seven days, and then, without tearing the rig down, simply "skid" the rig 50 feet over to drill the next well. In the time it used to take to drill one well, with pad drilling one rig might be able to drill 6 wells (or more).
Similar savings in time are met with pad fracking.
The graphic:
The rig locations on the graphic above:
- 34103, conf, MRO, Dye USA 14-14TFH-2B, Reunion Bay,
- 21172, conf, MRO, TAT USA 12-23H, Reunion Bay,
- 32974, conf, MRO, Jorgenson USA 12-23H,
- 31776, drl, HRC, Fort Berthold 151-94-26B-35-12H, Sanish pool;
- 30543, drl, HRC, Fort Berthold 151-94-26A-35-6H, Sanish pool;
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