NEWS RELEASE TRANSMITTED BY Marketwire



FOR: TRANSGLOBE ENERGY CORPORATION

TSX SYMBOL:
 TGL
NASDAQ SYMBOL:
 TGA

TransGlobe Energy Corporation Announces Well Results on Block S-1, Yemen

Jun 28, 2007 - 03 55 ET

CALGARY, ALBERTA--(Marketwire - June 28, 2007) - TransGlobe Energy Corporation ("TransGlobe" or the "Company") (TSX:TGL)(AMEX:TGA) is pleased to announce a new Lam A oil producer at An Nagyah #26.

Block S-1, Republic of Yemen (25% working interest)

An Nagyah #26, which commenced drilling June 3, 2007, reached a total measured depth of 2,003 meters and was completed as a producing oil well after flowing at an initial rate of 2,609 barrels of light (43 degree API) oil per day and 1.3 million cubic feet of gas per day at a flowing pressure of 400 psi on a 48/64 inch choke. The An Nagyah #26 well was drilled 712 meters horizontally in the Lam A sandstone reservoir. The well will be placed on production through a pipeline connected to the An Nagyah facilities.

About TransGlobe Energy Corporation

TransGlobe Energy is an oil and gas producer with proved reserves and production operations in The Republic of Yemen and in Alberta, Canada. TransGlobe has an active exploration and development program planned for 2007 in The Republic of Yemen, The Arab Republic of Egypt and in Canada. The Company owns working interests in more than 6.8 million acres across their operating regions. In 2006, the Company set new records for total proved reserves and annual production. Calgary-based, TransGlobe Energy's common shares trade as "TGL" on the Toronto Stock Exchange and "TGA" on the American Stock Exchange.

Cautionary Statement:

This release includes certain statements that may be deemed to be "forward-looking statements" within the meaning of the US Private Securities Litigation Reform Act of 1995. All statements in this release, other than statements of historical facts that address future production, reserve potential, exploration drilling, exploitation activities and events or developments that the Company expects, are forward-looking statements. Although TransGlobe believes the expectations expressed in such forward-looking statements are based on reasonable assumptions, such statements are not guarantees of future performance and actual results or developments may differ materially from those in the forward-looking statements. Factors that could cause actual results to differ materially from those in forward-looking statements include oil and gas prices, well production performance, exploitation and exploration successes, continued availability of capital and financing, and general economic, market or business conditions.

TRANSGLOBE ENERGY CORPORATION

Lloyd W. Herrick, Vice President & C.O.O.


FOR FURTHER INFORMATION PLEASE CONTACT:

TransGlobe Energy Corporation
Ross G. Clarkson
President & C.E.O.
(403) 264-9888
(403) 264-9898 (FAX)

or

TransGlobe Energy Corporation
Lloyd W. Herrick
Vice President & C.O.O.
(403) 264-9888
(403) 264-9898 (FAX)
Email: trglobe@trans-globe.com
Website: www.trans-globe.com

or

Executive Offices
#2500, 605 - 5th Avenue, S.W.,
Calgary, AB T2P 3H5