SemGroup Credit Facility Tops $2 Billion

SemGroup, L.P. announced today the successful closing of
transactions that boost the company's credit facility to more than $2
billion.

Greg Wallace, SemGroup chief financial officer, said, "Our company
expects additional growth opportunities in 2007 that support our
strategy of providing midstream services for the energy industry in
North America, Western Europe and other worldwide locations. Our new
credit facility will enable us to pursue our objectives."

Banc of America Securities LLC is bookrunner for the facilities.
Lead lenders include Bank of America, N.A., BNP Paribas, Bank of
Montreal, Bank of Oklahoma, N.A. and The Bank of Nova Scotia.

Since the company's founding in 2000, SemGroup has completed more
than 45 acquisitions, and its total assets exceed $4.2 billion.
SemGroup has more than 34.1 million barrels of owned and/or leased
storage and has multiple projects in progress to increase that number.
In November 2006, SemGroup was ranked No. 5 on Forbes list of
America's Largest Private Companies.

SemGroup's business segments focus on activities related to crude
oil, refined petroleum products, natural gas, natural gas liquids,
asphalt and storage. The company, which has more than 1,800 employees,
operates in the United States, Canada, Mexico, Wales (United Kingdom)
and Switzerland. For additional information, visit www.semgrouplp.com.