The East Poplar Unit is located on the west flank of the Williston basin in T. 28 N., R. 51 E. and T. 29 N., R. 51 E., Roosevelt County, Montana.

The East Poplar Unit includes an area of 34,134 acres of which 98 per cent has been unitized. The unit is controlled by the Carter Oil Company, Murphy Corporation, Phillips Petroleum Company, and Placid Oil Company. Murphy Corporation is the unit operator.

Structurally, the East Poplar Unit is located on an anticlinal closure on a broad regional nose.

The discovery well, the Murphy Corporation East Poplar Unit No. 1, C., SW., NE., Sec. 2, T. 28 N., R. 51 E., was completed March 12, 1952. The discovery well was drilled to the total depth of 9,163 feet into Ordovician quartzite. The well was completed dually from two zones of porosity in the upper part of the Madison formation for an initial production gauge of 325 barrels of oil per day through 8/64-inch tubing choke and 390 barrels of oil per day through 12/64-inch casing choke.

To date, eighteen oil wells and three dry holes have been completed in the Unit area.

Two areas of production have been established within the Unit area. Neither area has been fully delineated. Approximately 3,200 acres are considered proved productive at this time.

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