Vancouver, December 5, 2006 – Portrush Petroleum Corporation (TSX- V :PSH, OTCBB:PRRPF) (http://www.portrushpetroleum.com) announced today that the operator of the Mission River, Texas property has finalized the location for the next deep test and anticipates drilling the well in early January utilizing a Patterson-UTI drilling rig capable of drilling to 8,500 feet with a 4” pipe. The operator recently completed a 3-D seismic shoot on the property and has used the data to enhance the Scanio/Shelton No.8 location. Well site preparations will commence immediately. The Company holds a 10% interest in the Mission River property and the seismic shoot covered the entire property of just over 700 acres. It is anticipated the seismic data will support a multi-well deep drilling program on the property after the completion of this well. The seismic information will be used to locate the wells and determine the optimum number of wells that will be required to drain the reservoir. To date two deep wells have been drilled and successfully placed on production. An upgrade of the pipeline gathering system is underway. This will allow an increase in the production capacity. In respect to the Lenox property in Michigan, the Company has received a report recommending drilling of a third well on this property. The Company is reviewing this proposal in addition to another proposal to develop a similar pinnacle reef project located in the province of Ontario. For all future Portrush investor relations needs, investors are asked to visit the Portrush IR Hub at http://www.agoracom.com/IR/Portrush where they can post questions and receive answers within the same day, or simply review questions and answers posted by other investors. Alternatively, investors are able to e-mail all questions and correspondence to PSH@agoracom.com where they can also request addition to the investor e-mail list to receive all future press releases and updates in real time. To find out more about Portrush Petroleum Corporation visit our website at www.portrushpetroleum.com or visit our Investor Relations site at http://www.agoracom.com/IR/Portrush 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. ON BEHALF OF THE BOARD Mr. Martin Cotter, President & Director CONTACT INFORMATION Mr. Allan McGirr Telephone 604 696 2555 866 939 2555 info@portrushpetroleum.com Investor Relations AGORACOM Investor Relations http://www.agoracom.com/IR/Portrush PSH@Agoracom.com The TSX Venture Exchange has not reviewed this press release and has neither approved nor disapproved the information contained in this press release.