Vitol, Inc. Enters into Agreement to Purchase the General Partner of SemGroup Energy Partners, L.P.

TULSA, Okla.--(Business Wire)--
SemGroup Energy Partners, L.P. ("SGLP") (Pink Sheets: SGLP) has been informed
that Vitol Inc., part of the Vitol Group of companies ("Vitol"), today entered
into an agreement with Manchester Securities Corp., an affiliate of Elliott
Management Corporation ("Manchester"), to purchase 100% of the membership
interests of SemGroup Energy Partners G.P., L.L.C., SGLP`s general partner, and
SGLP`s subordinated units. Because this is a private transaction, financial
terms were not disclosed. The agreement is subject to a number of customary
closing conditions and approvals, including consent from SGLP`s lenders under
its credit facility.

Vitol Inc. is the principal U.S. subsidiary of the Vitol Group. Vitol is engaged
in the global physical supply and distribution of crude oil, petroleum products,
coal, natural gas, and other commodities. Vitol was founded in 1966, and is
headquartered in the Netherlands. Vitol moves over 5 million barrels of crude
oil and petroleum products every day throughout the world, charters more than
3,000 ships annually and had annual revenues of $191 billion in 2008.

Kevin Foxx, President and Chief Executive Officer of SGLP`s general partner,
stated, "We want to express our thanks and appreciation to Manchester, which has
provided us a tremendous amount of support and leadership throughout the past 15
months. We are also pleased that Manchester has reached agreement with Vitol,
one of the largest independent energy companies in the world. We believe our
assets can be a great fit into Vitol`s U.S. business model and we look forward
to working with them and growing our business."

About SemGroup Energy Partners, L.P.

SGLP owns and operates a diversified portfolio of complementary midstream energy
assets consisting of approximately 8.2 million barrels of crude oil storage
located in Oklahoma and Texas, approximately 6.7 million barrels of which are
located at the Cushing, Oklahoma interchange, approximately 1,150 miles of crude
oil pipeline located primarily in Oklahoma and Texas, over 200 crude oil
transportation and oilfield services vehicles deployed in Kansas, Colorado, New
Mexico, Oklahoma and Texas and approximately 7.4 million barrels of combined
asphalt and residual fuel storage located at 46 terminals in 23 states. SGLP
provides crude oil terminalling and storage services, crude oil gathering and
transportation services and asphalt services. SGLP is based in Tulsa, Oklahoma.
For more information, visit SGLP`s web site at www.SGLPEnergy.com.

For email alerts click here: http://www.b2i.us/irpass.asp?BzID=1505&to=ea&s=0

SemGroup Energy Partners, L.P.
Investor Relations
Brian Cropper, 918-237-4032
investor@sglpenergy.com

Copyright Business Wire 2009