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Samson Using 30-35 Stage Fracs on Bakken Stockyard Wells
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Samson Oil & Gas Limited has updated its Bakken/Three Forks well projects, including North Stockyard, Rainbow and South Prairie.
North Stockyard Project – Williams County, North Dakota
The Ironbank 4-14-13TFH is presently drilling the lateral portion of the wellbore at 15,640 feet in the Three Forks Formation.
The Bootleg 4 & 5 wells are now flowing. The Bootleg 4 has averaged 568 BOPD and the Bootleg 5 has averaged 468 BOPD over the course of the last week.
Fracture Stimulation Program
Four north Stockyard wells are scheduled to be fracked in the near term and these are set out in the following table:
Rainbow Project – Williams County North Dakota
Gladys 1-20H (SSN 23%)
The Gladys 1-20 H well has been drilled by Continental Resources to a total depth of 19,994 feet. The well is a 1,280 acre lateral (approximately 10,000 feet) in the middle member of the Bakken Formation.
The flow back continues to be dominated by frack fluid, with last week’s total fluid rate averaging 2,200 BFPD with an 80% water cut. Water cuts in the middle Bakken are typically 25 to 30% and therefore we are expecting to see this ratio to decrease as the frack fluid is recovered. Importantly the stimulation has delivered a well that has ample fluid capacity. Flowing pressure remains robust at over 1,000 psi.
South Prairie Project - Ward County, North Dakota
York #3-9 well (SSN 25%)
Drilling has been completed on the York #3-9 well located in T156N R82W S3 on the eastern flank of the Williston Basin. Stephens Production Company drilled the well to a total depth of 5,100’. The top of the Glenburn target zone of the Mississippian Mission Canyon Formation was found as expected at a depth of 4,944’ MD or 4,893’ TVD. The Glenburn was intersected 50’ high to the two show wells originally thought to be near an oil-water contact, though the Glenburn was found to be wet, and thus the well is currently being plugged. One can conclude the reasoning for the wet Glenburn zone is that the 4-way structural trap did not completely close on the eastern edge of the trap which coincides with edge of the 3-D seismic. The low-fold data along the edges of 3-D seismic surveys are not always reliable and was one of the risks accounted for in the original assessment of the Pubco prospect. Samson’s total cost for its 25% working interest in the York well is estimated to be approximately $175,000. Since this was the first test of three different Glenburn structural closures mapped along the Devonian Prairie Salt dissolution edge, the remaining two prospects will be highly scrutinized by the Joint Venture to determine if they should still be drilled.
