SemCAMS Announces New Duvernay Gathering Pipeline to the Kaybob Amalgamated ("KA") Gas Plant

SemCAMS Announces New Duvernay Gathering Pipeline to the Kaybob Amalgamated
("KA") Gas Plant

CALGARY, Alberta, Dec. 18, 2013 (GLOBE NEWSWIRE) -- SemCAMS, a subsidiary of
SemGroup® Corporation (NYSE:SEMG), today announced that it will extend its
capture area into the Duvernay region through the construction of the low sour
gas gathering line, to be named the "KA North" pipeline, from 7-14-63-20 W5M
to the KA plant. The project also includes the construction of a new inlet
separator at the KA plant. The total estimated cost of these initiatives is
expected to be approximately $18 million (Cdn).

The KA North pipeline is underpinned by a fee-for-service natural gas
gathering and processing agreement with Shell Canada ("Shell"). SemCAMS will
own 60 percent of the KA North pipeline which is expected to be in service by
June 2014, pending regulatory approvals and delivery of long lead items on a
timely basis. The KA North pipeline consists of a 16 kilometer, 10 inch sour
gas gathering pipeline with 125 mmcf/d of capacity. SemCAMS will operate the
pipeline, which will be able to serve other customers in the area.

The KA plant is located in the heart of the Duvernay region, where producers
are actively drilling for liquids-rich gas. By extending its reach targeting
the Duvernay formation in the Kaybob Area, SemCAMS hopes to attract
incremental volumes to the KA plant where there is available processing
capacity and an additional 11,000 bbls per day of condensate stabilization
capacity that could be restarted.

"We are excited about this opportunity to extend the capture area and increase
our inlet hydrocarbon liquids handling capacity at the KA gas plant to meet
the needs of our customers. The KA North pipeline and inlet separator projects
are consistent with our goal of re-tooling the existing infrastructure to
capture incremental liquids-rich gas in the Duvernay area," says Dave
Williams, SemCAMS' General Manager.

About SemCAMS

SemCAMS U.L.C., a subsidiary of SemGroup® Corporation (NYSE:SEMG), is a
gathering and processing business which provides midstream solutions for
natural gas producers in Western Canada. SemCAMS is one of Alberta's largest
licensed sour gas processors with facilities located near Whitecourt and Fox
Creek. The company also operates two sweet gas processing facilities in this
region. SemCAMS is based in Calgary, Alberta, Canada. For more information,
visit www.semcams.com.

About SemGroup

Based in Tulsa, Oklahoma, SemGroup® Corporation (NYSE:SEMG) is a publicly
traded midstream service company providing the energy industry the means to
move products from the wellhead to the wholesale marketplace. SemGroup
provides diversified services for end users and consumers of crude oil,
natural gas, natural gas liquids, refined products and asphalt. Services
include purchasing, selling, processing, transporting, terminalling and
storing energy.

Forward-Looking Statements

Certain matters contained in this Press Release include "forward-looking
statements" within the meaning of Section 27A of the Securities Act of 1933,
as amended, and Section 21E of the Securities Exchange Act of 1934, as
amended. We make these forward-looking statements in reliance on the safe
harbor protections provided under the Private Securities Litigation Reform Act
of 1995.

All statements, other than statements of historical fact, included in this
Press Release may constitute forward-looking statements. Although we believe
that the expectations reflected in these forward-looking statements are
reasonable, we cannot assure you that these expectations will prove to be
correct. These forward-looking statements are subject to certain known and
unknown risks and uncertainties, as well as assumptions that could cause
actual results to differ materially from those reflected in these
forward-looking statements. Factors that might cause actual results to differ
include the risk factors discussed from time to time in each of our documents
and reports filed with the SEC.

Readers are cautioned not to place undue reliance on any forward-looking
statements contained in this Press Release, which reflect management's
opinions only as of the date hereof. Except as required by law, we undertake
no obligation to revise or publicly release the results of any revision to any
forward-looking statements.

CONTACT: Investor Relations:
         Alisa Perkins
         918-524-8081
         investor.relations@semgroupcorp.com
        
         Media:
         Kiley Roberson
         918-524-8594
         kroberson@semgroupcorp.com

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