Updates:
May 16, 2012: a reader noticed that Nomac 312 is no longer on the active drilling list which suggests that CHK has completed drilling the two wells on the Grenz pad. See below. Remember: McLendon said he was going to test a new formation (other than the Bakken / Three Forks); maybe this is what he was referring to.
Original Post
According to the NDIC active rig list, Chesapeake is moving rig NOMAC 312 from Hutzenbiler 9-137-99 A 1H to Grenz 26-138-98 A 2H about 9 miles to the northeast.
According to the well file, the Three Forks is the target of the Hutzenbiler.
Note: Chesapeake has two wells on one pad in this area, each apparently targeting a different formation:
- 22153, loc, Grenz 26-138-08 A 2H, Mission Canyon Pool; wildcat;
- 22185, conf, Grenz 26-138-98 A 1H (already drilled), wildcat, Bakken/Three Forks Pool
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The Madison group is composed of the Charles, Mission Canyon, and Lodgepole formations.
Prior to the current Bakken Boom, 60% of all oil produced in North Dakota had come from the Charles and the Mission Canyon.
Note: many wells I have mentioned in earlier posts are "Madison" wells -- without additional information, one would not know if Charles, Mission Canyon, or Lodgepole. I don't recall seeing any "Mission Canyon" wells in the past; I have always seen Madison wells (of the three in this discussion).
The Lodgepole and Mission Canyon are carbonates and have porosity; the Charles Formation is dominated by [salts] and lacks permeability.
