CLR Operations Update -- December 20, 2011 -- The Bakken, North Dakota, USA

Operations update, December 20, 2011.

Data points for the Bakken:

• CLR completed 46 gross wells in 4Q11; 39 in ND and 7 in Montana
• Of the 46, 24 have IPs of at least 1,000 boepd

"Cut and paste" of their notable Bakken wells this quarter:

• Dvirnak 2-7H (43% WI) in Dunn Co. 2,094 boepd;
• Dvirnak 3-7H (43% WI) in Dunn Co. 1,981 boepd;
• Entzel 1-26H (65% WI) in Dunn Co. 1,731 boepd;
• Mack 4-2H (77% WI) in McKenzie Co. 1,585 boepd;
• Palmer 1-25H (29% WI) in McKenzie Co. 1,533 boepd;
• Grande 1-18H (37% WI) in Dunn Co. 1,514 boepd;
• Patterson 1-13H (86% WI) in McKenzie Co. 1,498 boepd;
• Pletan 4-18H (35% WI) in Dunn Co. 1,459 boepd
• Madison 1-28H (92% WI) in Williams Co. 1,426 boepd;
• Barkley 1-5H (29% WI) in McKenzie Co. 1,408 boepd;
• Charlotte 2-22H (91% WI) in McKenzie Co. 1,396 boepd;
• Truman 1-23H (77% WI) in Williams Co. 1,379 boepd;
• Stockton 1-28H (67% WI) in Williams Co. 1,375 boepd; and
• Beaver Creek State 1-36H (50% WI) in Golden Valley Co. 1,328 boepd.

The Charlotte 2-22H was the Company's first test of the lower, second bench of the Three Forks formation and was previously reported with preliminary results of 1,140 Boepd in an initial one-day test. The higher production rate reported above primarily reflects infrastructure improvements.

2011 CAPEX: $2.0 billion (apart from production and lease acquisitions = $150 million)