SOURCE: Portrush Petroleum Corporation

October 29, 2007 13:39 ET

Portrush Announces Drilling in Mission River

VANCOUVER, BC--(Marketwire - October 29, 2007) - Portrush Petroleum Corporation (TSX-V: PSH) (OTCBB: PRRPF) ( wishes to announce that the next well on the Mission River lease has spudded. The well, the Scanio/Shelton No.8, had reached a depth of 1,282 feet earlier this morning and will be drilled to a depth of 7,950 feet. It is anticipated to take approximately fourteen days to drill.

The operator anticipates drilling the first well will confirm the results of the 3-D seismic data shot in December 2006 and January 2007 and thoroughly reviewed since the completion of the Scanio/Hawn No.1 drilled earlier this year. The re-worked seismic clearly identifies the intended payzones expected to be penetrated by this first well. A successful well would then be followed by three additional wells.

The Mission River lease is being developed by McAlester and is located at the south end of the town of Refugio, Refugio County, Texas. The field has multiple pays at depths ranging from 2,000 to 8,800 feet. Portrush has a 10% working interest in the field. To date, nine wells have been drilled and all nine wells have been placed on production.

Drilling has reached the half way stage at the Portrush et al No.1-Moore 5-13-III in Moore township, Lambton County, Southwestern Ontario. The six BCF prospect is located on trend and mid-point between two pinnacle reef gas storage pools, Kimball Colinville and Waubuno.

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The statements made in this Press Release may contain forward-looking statements that may involve a number of risks and uncertainties. Actual events or results could differ materially from the Company's expectations and projections. The TSX Venture Exchange has not reviewed this press release and neither approved nor disapproved the information contained in this press release.

Mr. Martin Cotter
President & Director

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