Calfrac Well Services Ltd. Second Quarter 2010 Earnings Release and
Conference Call

CALGARY, July 26 /CNW/ - Calfrac Well Services Ltd. ("Calfrac") (TSX: CFW) intends to release its Second Quarter 2010 results after the markets close on Tuesday, August 3, 2010. A conference call has been scheduled for 10:00 a.m. MT (12:00 noon ET) on Wednesday, August 4, 2010. If you wish to participate in the conference call, please call [phone] or [phone] prior to the start of the call and ask for the Calfrac Well Services Ltd. conference call. A webcast of the conference call may be accessed via Calfrac's website at www.calfrac.com. An update regarding Calfrac's activities will be presented by D.R. (Doug) Ramsay, President and C.E.O and Laura A. Cillis, Senior Vice President, Finance and C.F.O. Following this update, there will be a question and answer period.

A replay of the conference call will be available for review until August 18, 2010. To listen to the recording, call [phone] and ask for reservation 87282903.

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For further information: Lorraine Graham of Calfrac at [phone]