Syntroleum Retains Halliburton Investor Relations to Direct IR Program

Business Wire, Nov 13, 2007

TULSA, Okla. -- Syntroleum Corporation (NASDAQ: SYNM) today announced it has retained Dallas-based Halliburton Investor Relations to manage the company's investor relations program.

As part of its financial communications initiatives for Syntroleum, Halliburton Investor Relations will focus on promoting investor awareness of Syntroleum's operational and financial performance, communicating its growth strategy, and broadening the company's institutional shareholder base.

"Halliburton Investor Relations offers a comprehensive investor relations program, including communications support, shareholder relations and new investor exposure," said Jack Holmes, CEO of Syntroleum Corporation. "The firm has a proven track record of implementing successful investor relations programs for publicly traded companies, and we believe they will help us to broaden our visibility and communicate more effectively with the investment community."

Geralyn Maher DeBusk, President of Halliburton Investor Relations, said, "Syntroleum is an innovative company that operates in the rapidly growing Synthethic Fuels sector, yet the company remains relatively undiscovered by the investment community. We believe Syntroleum's future growth opportunities in this market, and its Dynamic Fuels venture with Tyson Foods, make it a prime candidate for our strategic investor relations program."

About Syntroleum

Syntroleum Corporation owns the Syntroleum[R] Process for Fischer-Tropsch (FT) conversion of synthesis gas derived from biomass, coal, natural gas and other carbon-based feedstocks into liquid hydrocarbons, the Synfining[R] Process for upgrading FT liquid hydrocarbons into middle distillate products such as synthetic diesel and jet fuels, and the Biofining[TM] technology for converting animal fat and vegetable oil feedstocks into middle distillate products such as renewable diesel and jet fuel. Together with Tyson Foods, Syntroleum is focused on siting, engineering and constructing a plant that produces clean renewable synthetic diesel and jet fuel using low grade fats and greases as feedstock. The 50/50 venture - known as Dynamic Fuels - plans to announce the plant site in the fourth quarter of this year, with production beginning in 2010. The Company plans to use its portfolio of technologies to develop and participate in synthetic and renewable fuel projects. For additional information, visit the company's Web site at www.syntroleum.com.

About Halliburton Investor Relations

Halliburton Investor Relations (HIR) was formed in 1990 to provide a superior caliber of investor relations representation to publicly traded companies. HIR develops strategic communications programs designed to produce maximum results. Cultivating highly targeted, quality contacts in the financial community, HIR puts its clients face-to-face with hand-picked potential investors and influencers, the product of a highly selective research process. For more information on the company, visit www.HalliburtonIR.com.

This document includes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, as well as historical facts. These forward-looking statements may include statements relating to the Syntroleum[R] Process, the Synfining[R] Process, our renewable fuels Biofining[TM]technology, plans to use the Company's various technologies, , commercialization of the Company's technologies, and future investor relations activities of the Company. When used in this document, the words "anticipate," "believe," "estimate," "expect," "intend," "may," "plan," "project," "should" and similar expressions are intended to be among the statements that identify forward-looking statements. Although we believe that the expectations reflected in these forward-looking statements are reasonable, these kinds of statements involve risks and uncertainties. Actual results may not be consistent with these forward-looking statements. Syntroleum undertakes no obligation to update or revise forward-looking statements to reflect changed assumptions, the occurrence of unanticipated events or changes to future operating results over time. Important factors that could cause actual results to differ from these forward-looking statements include the potential that debt or equity financing for anticipated plants or related natural gas liquids or oil and gas projects may not be available, the schedule for development, construction and operation of proposed plants may not be met, anticipated appropriation and expenditure of federal monies does not occur, commercial-scale plants do not achieve the same results as those demonstrated on a laboratory or pilot basis or that such plants experience technological and mechanical problems, the potential that improvements to Syntroleum's various technologies currently under development may not be successful, the impact on plant economics of operating conditions (including energy prices), construction risks, risks associated with investments and operations in foreign countries, our dependence on strategic relationships with manufacturing and engineering companies, volatility of energy prices, the ability to implement corporate strategies, including the continued availability of adequate working capital, competition, intellectual property risks, our ability to obtain financing and other risks described in the Company's filings with the Securities and Exchange Commission.