Update on the Lodgepole Well North of Williston: Oasis Clark 5602 12-13H -- The Williston Basin, North Dakota, USA

Lodgepole Pool?

Updates

April 7, 2012: I have long been confused about what pool the Lodgepole formation is in. Note: I am talking about the Lodgepole formation lying above the Bakken, not the Lodgepole reefs around Dickinson. According to the NDGS, the Lodgepole formation is part of the Madison Group (Charles, Mission Canyon, and Lodgepole formations). But yet, according to Teegue, the Lodgepole formation is defined by oil companies and the NDIC not to be part of the Madison Pool. If anything, the Lodgepole is part of the Bakken Pool. [The NDIC does break it out by "Bakken/Lodgepole" when compiling yearly production by formation.] However, when completing a sundry form for the Clark well, Oasis changed the pool from Bakken to Lodgepole. Teegue says that if the Oasis Clark well becomes commercial, it will be defined as part of the Bakken Pool or will be defined as a newly defined Lodgepole Pool.

Note: #18179, DRL, Samson Resources, Holm State 16-162-98H, wildcat, north of Williston, is also a Lodgepole, and the NDIC lists the Pool as Lodgepole. It almost appears as if the NDIC already has a "Lodgepole" Pool and includes the wells targeting the reefs, as wells as those targeting the non-reef formation.

The Oil for America wells targeting the Lodgepole reefs around Dickinson were also identified as Lodgepole Pole, for example:

• 20195, DRL, Oil for American, Dohrman 14-1, Wildcat, Lodgepole

Original Post

Before reading the rest of the post, go back and read the update on the Tyrone oil field, north of Williston.

• 21261, 94, Oasis, Clark 5602 12-13H, came off confidential May 1, 2012; said to be economical by Oasis (personal correspondence); closed hole frack; 4 million lbs sand/ceramics

This well is back on the confidential list after coming off for a short period of time. One can access some of the filings before it went back on confidential.

This well was rumored to be a Lodgepole formation well, north of Williston. I have opined that if it is a "good" well, it could be another game changer.

An IP has not yet been reported, but it did produce 805 bbls of oil in an unknown number of days in January.

From the well file, the geologist's comment:

The Lodgepole Fracture Zone, the zone of interest in the Clark 5602 12-13H was entered at 10,077 feet MD, 9,882 feet total vertical depth....the lateral was planned to drill from the top to the bottom of the Lodgepole Fracture Zone, exploring for possible intervals of better show....gas monitoring and fluid gains provided evidence of a hydrocarbon saturated reservoir during the drilling of the Clark 5602 12-13H. Oil and gas shows at the shakers and in samples were continuously monitored...This allowed for gas and fluid gains from the well to be evaluated...During the lateral, observed concentrations ranged from 1,000 to 1,600 units background gas and connection peaks of 4,000 to 5,000 units. A down time gas of 7,858 units was noted at 10,600 feed MD and during a trip at 10,983 feet MD, a trip gas of 5,773 units was noted along with green brown oil [italics at the source] at the catch tank. Chromatography of gas revealed an abundance of methane and ethane, but also significant concentrations of propane and butane.

Later:

As this was to be an experimental drilling project, the onsite crew and Oasis reps developed a drilling plan in which the well-bore was to move from the top to the Lodgepole fracture zone to the bottom of the Lodgepole fracture zone....The well-site team worked well together maintaining the well-bore in the desired target interval for 100% of the lateral, opening 4,333 feet of potentially productive reservoir rock. 

The well was awaiting completion at the time of the geologist's report.