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Sanish - Three Forks of Bakken  Shale ( North Dakota Oil Shale )  

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What is the Three Forks/Sanish Formation?  The Sanish/Three Forks zone is an Oil area below the upper part of the Bakken Oil Shale formation.  Experts and drillers are trying to figure out if the Three Forks is a separate oil reservoir or actually part of the Bakken Shale oil field.  Many companies ( below ) have been drilling wells in Montrail County, North Dakota - McKenzie County, North Dakota - and Dunn County, North Dakota.  These companies have been striking positive Three Forks/Sanish results.  If you live in these areas, chances are companies have tried to buy your mineral rights.  Check out the Sanish - Three Forks Map Below!

Fresh New Well Results - August 10, 2009: Brigham Exploration ( BEXP ) - Best well so far out of the Three Forks Zone:

Brigham Exploration Announces Approximately 2,154 BOEPD Bakken Well
Brigham Exploration Company (NASDAQ: BEXP) announced that the Anderson 28-33 #1H produced approximately 2,154 barrels of oil equivalent per day from the Bakken formation during its early 24 hour flow back period. Brigham's Anderson 28-33 #1H well, to our knowledge, is the first successful 24 stage fracture stimulation completion in the Williston Basin.

Brigham announced that the Anderson 28-33 #1H was successfully fracture stimulated and produced approximately 1,838 barrels of oil and 1.9 MMcf of natural gas, or 2,154 barrels of oil equivalent, from the Bakken formation during its early 24 hour flow back. The long lateral Anderson 28-33 #1H was completed with 24 fracture stimulation stages. Brigham maintains an approximate 66% working interest and 55% net revenue interest in the Anderson 28-33 #1H well, located in Brigham's Ross Area of Mountrail County, North Dakota.  Full Article Here


Fresh New Well Results - July 15, 2009
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Brigham Exploration ( BEXP ) - 2nd best well so far out of the Three Forks Zone:

Brigham Exploration Announces 2,021 Boepd Three Forks Well and Provides Williston Basin Update

Brigham Exploration Company (NASDAQ: BEXP) announced that the Strobeck 27-34 #1H produced approximately 2,021 barrels of oil equivalent per day from the Three Forks formation during its early 24 hour flow back period. Brigham also provided an update on its operated and non-operated drilling activity in the Williston Basin.

Ross Area, Mountrail County, North Dakota

Strobeck 27-34 #1H Three Forks Completion -- Brigham announced that the Strobeck 27-34 was successfully fractured stimulated and produced approximately 1,788 barrels of oil and 1.4 MMcf of natural gas, or 2,021 barrels of oil equivalent, from the Three Forks formation during its early 24 hour flow back period. The long lateral Strobeck 27-34 was completed with 20 fracture stimulation stages, 18 of which were effectively stimulated. The Strobeck 27-34 appears to represent the second highest initial rate for a Three Forks completion in the Williston Basin behind only the XTO Boucher 41X-21, which produced a reported 2,571 barrels of oil equivalent during its initial 24 hour flow back period. Brigham maintains an approximate 77% working interest and 63% net revenue interest in the Strobeck 27-34.   Full Article HERE

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Here are highlights from the biggest leaseholder in the Bakken Shale, Continental Resources ( Ticker CLR ). Below is a list of Continental Resources CLR production wells.

The Mathistad 1-35H was completed as a producing Three Forks/Sanish (TFS) well in June 2008. By the time Continental started drilling the Mathistad 2-35H, the Mathistad 1-35H had produced 103,000 Boe and was pumping 187 Boepd. In contrast, the Mathistad 2-35H flowed at 995 Boepd during its initial test period, more than four times the rate at which the first well had been performing on pump.

"This significant production difference is the strongest evidence that we stimulated new rock with the second well completion," Mr. Hamm said. "From a technical point of view, that is the only plausible explanation for this level of initial productivity."

He noted that additional drilling will be required to establish the extent to which the reservoirs are separate across the play. "We are very encouraged by these early steps in delineating the Bakken shale play, especially with regard to developing the Middle Bakken and the Three Forks/Sanish reservoirs separately. Based on the results of the Mathistad 2-35H, we believe the reserve potential of the Bakken play just went up."

The Company estimates that approximately half of its 439,000 net acres in North Dakota have the potential for the Middle Bakken and Three Forks/Sanish to produce independently. Continental controls a total of 605,000 net acres in the Bakken play in North Dakota and Montana.

CLR also has 17,000 acres in the Haynesville Shale and is active in the Marcellus Shale

Whiting Petroleum ( WLL ) also is very active in the Bakken Shale and the Sanish Field.  Lewis & Clark Prospect. Whiting has assembled 181,249 gross (111,501 net) acres in its Lewis & Clark prospect along the Bakken Shale pinch-out in the southern Williston Basin. In this area, the Upper Bakken shale is thermally mature, moderately over pressured, and has charged reservoir zones within the immediately underlying Three Forks formation. On December 13, 2008 Whiting completed its first horizontal test well in this area, which had an initial production rate of over 1,000 BOE per day. A second Three Forks test on this prospect, the MOI 22-15H, is a casing exit of an existing vertical wellbore that has reached total measured depth. Whiting holds a 91% working interest in the MOI 22-15H, which is expected to be completed by the end of February. The Company intends to drill an additional six Three Forks wells on the prospect in 2009 with an average working interest of 64%.

Whiting completed the Niemitalo 11-35H in the Sanish field on February 5, 2009 flowing at an initial rate of 3,547 BOE per day from the Middle Bakken formation. Whiting, the operator of the well, holds a 71% working interest and a 58% net revenue interest in the new producer.

Whiting has completed and placed on production its first Bakken infill well in the Sanish field, the McNamara 42-26H. This well was drilled between two horizontal Bakken producers, the Locken 11-22H and the Liffrig 11-27H. The initial production rate at the McNamara well was 2,170 BOE per day (measured December 8, 2008), which falls between the initial production rates of the two offset wells. There was no indication of communication or interference with either of the offset wells. Based on these results, Whiting expects to develop its leases with two 10,000-foot horizontal wells in each 1,280-acre spacing unit. This adds 78 potential infill well locations.

Whiting has also completed its first Three Forks horizontal well in the Sanish field, the Braaflat 21-11TFH. The initial production rate at the Braaflat well, which was drilled in the east-central portion of the Sanish field, was 1,005 BOE per day (measured January 1, 2009). Production and pressure data from this well will be analyzed over several months to determine the viability of developing the Three Forks in the Sanish field. The Company is currently drilling a second Three Forks test on the southwest part of the Sanish field. Results from the Hansen 21-3TFH will also be used to determine future drilling potential in the Three Forks formation in the Sanish field. Whiting holds a 100% working interest and an 81% net revenue interest in the Hansen well. The Company is currently drilling or completing eight other operated wells in the Sanish field with an 80% average working interest.  More.......

Sanish Three Forks Map
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Sanish Field Map