EOG infilling Parshall480 infill wells planned on 80 units; incremental gains up to 2.7 mm barrels Mike Ellerd Petroleum News Bakken
EOG Resources submitted an application with the North Dakota Industrial Commission in late September seeking authority to drill, complete and produce six additional wells on 80 separate spacing units in Parshall field in southeast Mountrail County for a total of 480 infill wells in that field. Of the 80 spacing units, 36 are 1,280-acre units and 44 are 1,920-acre units. That application is on the commission’s Sept. 26 hearing docket.
As a base case for estimated well economics, EOG presented data from three of its Parshall field wells, the Burke 1-34H, Burke 2-35 and Burke 18-27H. For the 1,280-acre units, EOG reports an estimated ultimate recovery of 1.295 million barrels of oil for a scenario of two Bakken wells, for an average of 647,500 barrels per well. In the eight-well scenario, EOG reports an EUR of 3.020 million barrels for an average of 377,500 barrels per well. Those EURs represent 3.4 and 7.9 percent recoveries of original oil in place for the two scenarios. The increased density will result in an estimated incremental gain of 1.725 million barrels. The six new wells on the 1,280-acre units will be split between the Bakken and Three Forks formations.
For the 1,920-acre spacing units, EOG reports an existing three-well scenario EUR of 1.71 million barrels, for an average of 570,000 barrels per well. For a nine-well scenario, EOG reports an EUR of 4.41 million barrels for an average of 490,000 barrels per well. Those EURs represent reservoir recoveries of 3.0 and 7.6 percent. The 1,920-acre infilling is estimated to result in an incremental gain of 2.7 million barrels. As with the 1,280-acre units, the new wells on the 1,920-acre units will be split between the Bakken and Three Forks formations.
Of the three reference wells, the Burke 1-34 well went on production in November 2008 with a 24-hour initial production, IP, of 1,206 barrels and through July 2013 produced a total of 287,648 barrels. The Burke 2-35H also went on production in November 2008, and that well came in with a 24-hour IP of 1,937 bpd and has produced 274,589 barrels through July. The Burke 18-27H well went on production in September 2009 with an IP of 765 bpd and has produced 159,645 barrels through July.
According to North Dakota Department of Mineral Resources Oil and Gas Division records, EOG currently has 447 wells on active status in the state and another 46 that are on confidential status. In the Parshall field alone, EOG has 192 active wells and 29 on confidential status. Other areas where EOG has focused activity include the Alger, Clear Water, Stanley, Spotted Horn, Squaw Creek and Van Hook fields in Mountrail and McKenzie counties.
According to Oil and Gas Division records, EOG ranked fifth among North Dakota oil producers in July averaging 47,399 bpd, not counting production from confidential wells.
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