NEWS RELEASE TRANSMITTED BY Marketwire



FOR: TRANSGLOBE ENERGY CORPORATION

TSX SYMBOL:
 TGL
NASDAQ SYMBOL:
 TGA

TransGlobe Energy Corporation Announces Successful Appraisal Well in the Republic of Yemen

Aug 05, 2004 - 01 06 ET

CALGARY, ALBERTA--(CCNMatthews - Aug. 5, 2004) - TransGlobe 
Energy Corporation ("TransGlobe" or the "Company") is pleased to 
announce another successful development well on Block S-1 in the 
Republic of Yemen. 

BLOCK S-1, REPUBLIC OF YEMEN (25% WORKING INTEREST) 

Successful Appraisal at An Nagyah #9: 

The An Nagyah #9 well was drilled to a total depth of 1,146 
meters and suspended as a potential oil well after flowing at a 
stabilised rate of 530 barrels of light (43 degree API) oil per 
day. The An Nagyah #9 well encountered a 20 meter oil bearing 
interval in the Upper Lam sandstones. The well is being equipped 
for early production via trucking. 

The An Nagyah #9 well is located 900 meters northwest of the An 
Nagyah #6 well which tested light sweet oil at 1,140 Bopd from a 
29 meter perforated interval (April 28, 2004 announcement). The 
drilling rig is currently moving to Al Hareth #1, an exploration 
well located approximately seven kilometers west of the An Nagyah 
pool. The Al Hareth #1 well will evaluate a new structure for 
Alif sand. The Alif sand is the main producing horizon in the 
prolific Marib al Jawf basin. If successful, a new pool discovery 
at Al Hareth could be produced through the An Nagyah CPF and 
pipeline. It is expected that the Al Hareth well will take 
approximately five weeks to drill and evaluate. Following Al 
Hareth #1, the drilling rig will be moved back to An Nagyah for 
additional development drilling. 

TransGlobe is a growth oriented international exploration and 
production Company with its corporate office in Calgary, Alberta, 
Canada. TransGlobe has achieved a production growth rate of 38% 
per year over the past three years and expects to produce an 
average of 3,600 Boepd during 2004. TransGlobe is well positioned 
for continued growth with interests in three production sharing 
agreements in the Republic of Yemen (two producing, one 
exploration), one exploration concession in the Arab Republic of 
Egypt and producing oil and gas properties in Alberta, Canada. 

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, exploitation and 
exploration successes, continued availability of capital and 
financing, and general economic, market or business conditions. 


/T/

TRANSGLOBE ENERGY CORPORATION

s/s/ Ross Clarkson

Ross G. Clarkson,
President & C.E.O


Executive Offices:
#2900, 330 - 5th Avenue, S.W.,
Calgary, AB T2P 0L4

/T/



-30-


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