CALGARY, ALBERTA--(CCNMatthews - Aug. 3, 2006) - Nexen announced today that drilling and logging operations on the Ringo prospect, located in Mississippi Canyon Block 546, have concluded. The well encountered approximately 150 feet of net gas pay. Conventional cores were taken throughout the productive intervals and the analysis indicates good quality reservoir sands. The discovery well is located in 2,500 feet of water, approximately 120 miles northeast of our Aspen field. Nexen is the operator of the block with a 50% working interest. ENI S.P.A. (NYSE: E) holds the remaining 50% interest. The Ringo well commenced drilling on May 28, 2006 and was drilled by the Transocean Amirante semi submersible drilling rig to a total depth of 12,808 feet. We are currently installing a production liner and are evaluating tie back options to nearby facilities. The resource range for Ringo is estimated to be within our pre-drill estimates of 60-170 bcfe and will be confirmed with additional drilling. "We are pleased with the results of our Gulf of Mexico exploration program," said Charlie Fischer, Nexen's President and CEO. "Including Ringo, this program has resulted in seven discoveries over the past 18 months, including major discoveries at Knotty Head (Green Canyon Block 512) and Alaminos Canyon Block 856." Nexen Inc. is an independent, Canadian-based global energy company, listed on the Toronto and New York stock exchanges under the symbol NXY. We are uniquely positioned for growth in the North Sea, deep-water Gulf of Mexico, the Athabasca oil sands of Alberta, the Middle East and offshore West Africa. We add value for shareholders through successful full-cycle oil and gas exploration and development and leadership in ethics, integrity and environmental protection. Forward-Looking Statements Certain statements in this report constitute "forward-looking statements" within the meaning of the United States Private Securities Litigation Reform Act of 1995, Section 21E of the United States Securities Exchange Act of 1934, as amended, and Section 27A of the United States Securities Act of 1933, as amended. Such statements are generally identifiable by the terminology used such as "intend", "plan", "expect", "estimate", "budget", "outlook" or other similar words, and include statements relating to future production associated with our Coalbed Methane, Long Lake, Syncrude, North Sea, West Africa, Gulf of Mexico and other projects. The forward-looking statements are subject to known and unknown risks and uncertainties and other factors which may cause actual results, levels of activity and achievements to differ materially from those expressed or implied by such statements. Such factors include, among others: market prices for oil and gas and chemicals products; the ability to explore, develop, produce and transport crude oil and natural gas to markets; the results of exploration and development drilling and related activities; foreign-currency exchange rates; economic conditions in the countries and regions where Nexen carries on business; actions by governmental authorities including increases in taxes, changes in environmental and other laws and regulations; renegotiations of contracts; results of litigation, arbitration or regulatory proceedings; and political uncertainty, including actions by terrorists, insurgent or other groups, or other armed conflict, including conflict between states. The impact of any one factor on a particular forward-looking statement is not determinable with certainty as such factors are interdependent upon other factors, and management's course of action would depend on its assessment of the future considering all information then available. Any statements as to possible future prices, future production levels, future cost recovery oil revenues from our Yemen operations, future capital expenditures and their allocation to exploration and development activities, future asset dispositions, future sources of funding for our capital program, future debt levels, future cash flows, future drilling of new wells, ultimate recoverability of reserves, expected finding and development costs, expected operating costs, future demand for chemicals products, future expenditures and future allowances relating to environmental matters and dates by which certain areas will be developed or will come on-stream, and changes in any of the foregoing are forward-looking statements. Although we believe that the expectations conveyed by the forward-looking statements are reasonable based on information available to us on the date such forward-looking statements were made, no assurances can be given as to future results, levels of activity and achievements. Readers should also refer to Items 7 and 7A in our 2005 Annual Report on Form 10-K for further discussion of the risk factors. Cautionary Note to US Investors - The United States Securities and Exchange Commission (SEC) permits oil and gas companies, in their filings with the SEC, to discuss only proved reserves that are supported by actual production or conclusive formation tests to be economically and legally producible under existing economic and operating conditions. In this press release, we may refer to "recoverable reserves", "probable reserves" and "recoverable resources" which are inherently more uncertain than proved reserves. These terms are not used in our filings with the SEC. Our reserves and related performance measures represent our working interest before royalties, unless otherwise indicated. Please refer to our Annual Report on Form 10-K available from us or the SEC for further reserve disclosure. In addition, under SEC regulations, the Syncrude oil sands operations are considered mining activities rather than oil and gas activities. Production, reserves and related measures in this release include results from the Company's share of Syncrude. Cautionary Note to Canadian Investors - Nexen is required to disclose oil and gas activities under National Instrument 51-101- Standards of Disclosure for Oil and Gas Activities (NI 51-101). However, the Canadian securities regulatory authorities (CSA) have granted us exemptions from certain provisions of NI 51-101 to permit US style disclosure. These exemptions were sought because we are a US Securities and Exchange Commission (SEC) Registrant and our securities regulatory disclosures, including Form 10-K and other related forms, must comply with SEC requirements. Our disclosures may differ from those Canadian companies who have not received similar exemptions under NI 51-101. Please read the "Special Note to Canadian Investors" in Item 7A in our 2005 Annual Report on Form 10-K, for a summary of the exemption granted by the CSA and the major differences between SEC requirements and NI 51-101. The summary is not intended to be all-inclusive or to convey specific advice. Reserve estimation is highly technical and requires professional collaboration and judgment. The differences between SEC requirements and NI 51-101 may be material. Our probable reserves disclosure applies the Society of Petroleum Engineers/World Petroleum Council (SPE/WPC) definition for probable reserves. The Canadian Oil and Gas Evaluation Handbook states there should not be a significant difference in estimated probable reserve quantities using the SPE/WPC definition versus NI 51-101. In this press release, we refer to oil and gas in common units called barrel of oil equivalent (boe). A boe is derived by converting six thousand cubic feet of gas to one barrel of oil (6mcf:1bbl). This conversion may be misleading, particularly if used in isolation, since the 6mcf:1bbl ratio is based on an energy equivalency at the burner tip and does not represent the value equivalency at the well head.
Nexen Inc. Kevin Finn Vice President, Investor Relations (403) 699-5166 or Sean Noe, P. Eng Analyst, Investor Relations (403) 699-4494 or 801 - 7th Ave SW Calgary, Alberta, Canada T2P 3P7 Website: www.nexeninc.com