Calvalley Petroleum Inc. provides the following update for shareholders.

Average gross production volumes for the second quarter of 2013 are estimated to be 5,000 bpd with the Hiswah field contributing 2,500 bpd, the Ras Nowmah field 1,650 bpd, the Al Roidhat field 690 bpd and Ras Nowmah South field, which came on production in early May, 160 bpd. Production in the quarter was reduced at both Ras Nowmah and Ras Nowmah South by approximately 220 bpd for the quarter due to security related issues. Total production capability including production from shut-in wells at Hiswah and Al Roidhat is approximately 6,000 bpd.

The Company sold 213,934 barrels of crude oil in the second quarter 2013, representing an average daily sales volume of 2,350 bpd (Company share before royalties and taxes) for the quarter. Calvalley's inventory of crude oil (net of royalties and taxes) at the end of the quarter is approximately 35,000 barrels.

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