TransGlobe Energy Corporation Announces Test Results on First Well on Block S-1, Republic of Yemen

May 10, 2000 - 12 00 ET

CALGARY, ALBERTA--TransGlobe Energy Corporation (TSE symbol "TGL";
OTC-BB symbol "TGLEF") announced the preliminary test results on 
the first of three exploration wells on Block S-1 in the Republic 
of Yemen. 

Vintage Petroleum International Inc., a 100% subsidiary of Vintage
Petroleum Inc. ("VPI" NYSE) operator of Block S-1, has completed 
testing of the first well at An Naeem # 1.  The well was drilled 
to a total depth of 1,612 meters (5,288 feet) to evaluate a 
possible extension of the Halewah field, which produces from the 
Alif formation, on the adjacent concession.  The Halewah field 
currently produces 25,000 barrels of oil per day from an oil rim 
under a gas cap.  The An Naeem well encountered what is 
interpreted on open hole logs to be approximately 30.5 meters (100
feet) of net pay in two Alif zones.  The well flow tested at a 
combined rate of 40 MMcfd of gas and 1,020 barrels per day of 
condensate on a 40/64 inch choke, from two intervals in the Alif 
zone. The upper 11 meters (36 feet) of potential Alif gas pay, 
which also has excellent open hole log characteristics was not 
tested.  No water was recovered during the test period.  The flow 
rates associated with the test results are evidence of the 
excellent reservoir properties that characterise the Alif sands 
and the characteristics of the gas and condensate tested are 
similar to the gas cap at the Halewah field. There is no 
commercial market for natural gas in the Republic of Yemen at this

In addition to the Alif zone, the operator successfully tested 7.7
MMcf/d of gas and 245 barrels per day of condensate from a newly 
identified dolomite zone above the Alif. 

A near-term evaluation of data obtained from the well is underway 
to determine the potential for the existence of an oil rim downdip
on the An Naeem structure, as exists in the adjacent Halewah 
field.  Based on the results of this evaluation, an additional 
well in the An Naeem structure may be proposed to target the 
potential oil rim. 

"We are very pleased with the discovery of hydrocarbons in a thick
reservoir section with excellent porosity and permeability in our 
first well. This is the result of the application of sophisticated
analysis utilizing 3-D seismic. The major risks concerning the 
quality of the reservoir and the presence of trapped hydrocarbons 
have been addressed.   We believe this has significantly enhanced 
the prospectivity of Block S-1 and eagerly anticipate the results 
of future drilling." said Ross Clarkson, President & CEO. 

Efforts are underway to move the drilling rig from An Naeem to the
second prospect, Harmel #1, to test a separate Alif prospect also 
identified on the 3D seismic program shot in 1999. The third well 
of the program will be drilled on either an Alif prospect at 
Fordus, a step out on the discovery made at An Nagyah by Shell Oil
Company in the early 1990's, or a new well to test the existence 
of an oil pool downdip on the An Naeem structure. 

The three wells comprise a portion of a farm out commitment by 
Vintage.  TransGlobe entered into a farm out agreement which 
allows Vintage to earn a 75% working interest in Block S-1. 
TransGlobe will retain a 25% working interest in Block S-1 after 
Vintage earns.  

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. 

On Behalf of the Board of Directors of  


Ross G. Clarkson 

President & CEO 



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


TransGlobe Energy Corporation
Lloyd Herrick
Vice President & COO
(403) 264-9888
(403) 264-9898 (FAX)