Continental Resources, Inc. reports that its proved reserves increased 21 percent to 310 MMBoe in the first half of 2010, based on its internal evaluation. This compared with the total proved reserves of 257 MMBoe at year-end 2009. The increase in the first half of 2010 primarily resulted from extensive drilling activity in the North Dakota Bakken Shale play.

Ryder Scott Company will prepare Continental's year-end 2010 reserve report, consistent with past practice. Ryder Scott was not involved in Continental's internal evaluation of its proved reserves as of June 30, 2010. The mid-year report was prepared based on 12-month unweighted average prices of $75.76 per barrel for oil and $4.10 per Mcf for natural gas, and further adjusted for location differentials. This compares to $61.18 per barrel for oil and $3.87 per Mcf for gas for the Company's year-end reserve report.

In addition, Continental announced the completion of 13 Company-operated gross wells (7.4 net) in the North Dakota Bakken play since July 1, 2010, with an average one-day production test of 1,070 Boepd (barrels of oil equivalent per day). These wells, with their one-day test results, included: • Roadrunner 1-15H (56% WI) in Dunn Co. - 1,722 Boepd; • Medicine Hole 2-27H (43% WI) in Dunn Co. - 1,702 Boepd; • Rollefstad 2-3H (73% WI) in McKenzie Co. - 1,689 Boepd; • Bonney 2-3H (43% WI) in Dunn Co. - 1,435 Boepd; • Howard 1-5H (52% WI) in Divide Co. - 1,201 Boepd; • Ravin 1-1H (59% WI) in McKenzie Co. - 1,034 Boepd; • Bjella 1-24H (41% WI) in Williams Co. - 1,029 Boepd.

Continental also participated in seven non-operated gross well completions (1.6 net) in the North Dakota Bakken play since July 1, 2010. One-day average test results for these wells averaged 1,158 Boepd. Three of the non-operated wells were in Mountrail County, two were in McKenzie County, and one each was in Dunn and Williams counties.

In addition, Continental announced another significant well completion in Richland County, Montana, with the Winters 3-35H (36% WI). The Winters is a 320-acre spaced infill well (1,320 feet inter-well spacing) in the Elm Coulee Field and produced 827 Boepd in its one-day test. The Winters has a 9,000-foot lateral and was fracture stimulated in 24 stages.

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