TransGlobe Energy Corporation TSX: TGL NASDAQ: TGA Other Recent News

February 14, 2011 TransGlobe Energy Corporation Announces 2010 Year-End Reserves CALGARY, ALBERTA--(Marketwire - Feb. 14, 2011) - TransGlobe Energy Corporation ("TransGlobe" or the "Company") (TSX:TGL) (NASDAQ:TGA) today announced its 2010 year-end reserves. All dollar values are expressed in United States dollars unless otherwise stated. The Companys 2010 and 2009 year-end reserves were prepared by the independent reserves evaluation firm of DeGolyer and MacNaughton Canada Limited ("DeGolyer"), in accordance with National Instrument 51-101. Following is a summary of DeGolyers evaluation for the year ended December 31, 2010 with comparatives to the year ended December 31, 2009. The recovery and reserve estimates of crude oil, natural gas liquids ("NGLs") and natural gas reserves provided in this news release are estimates only, and there is no guarantee that the estimated reserves will be recovered. Actual crude oil, NGL and natural gas reserves may be greater than, or less than, the estimates provided herein. All reserves presented are based on DeGolyers forecast pricing effective December 31, 2010 and December 31, 2009, respectively. Year-End 2010 Reserves(i) Proved Reserves ("1P") TransGlobes total proved reserves increased 6 percent to 20.5 million barrels of oil ("MMBbl") at December 31, 2010 from 19.2 MMBbl at December 31, 2009. This increase in proved reserves represents a production replacement in 2010 of 133 percent. The Company produced 3.6 MMBbl of reserves during 2010. Proved Plus Probable Reserves ("2P") Total 2P reserves grew 26 percent to 30.4 MMBbl at December 31, 2010 from 24.2 MMBbl at December 31, 2009. The increase in 2P reserves represents a production replacement in 2010 of 272 percent. Proved Plus Probable Plus Possible Reserves ("3P") Total 3P reserves grew 37 percent to 41.9 MMBbl at December 31, 2010 from 30.5 MMBbl at December 31, 2009. The increase in 3P reserves represents a production replacement in 2010 of 412 percent. (i) Definitions of Reserves Categories: -- Proved reserves are those reserves that can be estimated with a high degree of certainty to be recoverable. It is likely that the actual remaining quantities recovered will exceed the estimated proved reserves. -- Probable reserves are those additional reserves that are less certain to be recovered than proved reserves. It is equally likely that the actual remaining quantities recovered will be greater or less than the sum of the estimated proved plus probable reserves. -- Possible reserves have a less likely chance of being recovered than probable reserves. This term is often used for reserves which are claimed to have at least a 10 percent certainty of being produced. Year-End Reserves Summary (Working Interest, before royalties) December 31, December 31, Increase 2010 2009 (Decrease) (MMBbl) (MMBbl) (%) ---------------------------------------------------------------------------- Proved Egypt 15.2 13.0 16 Yemen 5.3 6.2 (15) ---------------------------------------------------------------------------- Total 1P 20.5 19.2 6 ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- Proved Plus Probable Egypt 23.9 16.8 43 Yemen 6.5 7.4 (12) ---------------------------------------------------------------------------- Total 2P 30.4 24.2 26 ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- Proved Plus Probable Plus Possible Egypt 34.5 22.4 54 Yemen 7.4 8.1 (9) ---------------------------------------------------------------------------- Total 3P 41.9 30.5 37 ---------------------------------------------------------------------------- ---------------------------------------------------------------------------- 2010 Reserve Changes In 2010, the Companys activities focused primarily on the development of its operated West Gharib concession and exploration/appraisal of the East Ghazalat concession in the Arab Republic of Egypt ("Egypt"). In Egypt, the Companys 1P reserves grew 16 percent over 2009, representing a production replacement of 181 percent. On 2P basis, the year-over-year increase was 43 percent, equal to a production replacement of 369 percent while on a 3P basis, the year-over-year increase was 54 percent, equal to a production replacement of 558 percent. The most significant reserves additions during the year resulted from exploration and appraisal drilling at Arta/East Arta in West Gharib and the Safwa discovery in East Ghazalat. Arta/East Arta accounted for approximately 81 percent of the corporate 1P reserve additions, 72 percent of the corporate 2P reserve additions and 73 percent of the corporate 3P reserve additions during 2010. On a 2P and 3P basis, the Safwa discovery was the other significant reserve addition during 2010. In the Republic of Yemen ("Yemen"), 2010 production was partially replaced by improved recovery factors at the An Nagyah, Tasour and Godah fields. The Companys 1P reserves in Yemen decreased 15 percent over the prior year, representing a production replacement of 6 percent. On a 2P basis, reserves in Yemen decreased 12 percent over the prior year, representing a production replacement of 13 percent. On a 3P basis, reserves in Yemen decreased 9 percent over the prior year, representing a production replacement of 23 percent. Significant 2010 Reserve Additions The emergence of the Nukhul oil pools in the Arta and East Arta leases in 2010 has resulted in significant reserve growth during 2010. The Nukhul pools (Upper and Lower) will be the primary focus for reserve additions (3P, 2P and 1P) and reserve conversions (from 3P to 2P to 1P) during 2011 and 2012. At year-end 2010, reserves were assigned by DeGolyer to approximately 60 percent of the currently mapped Arta/East Arta Nukhul oil pools based on internally generated maps. The following tables summarize the 2010 year-end reserves assignments for the Upper Nukhul formation in the Arta/East Arta leases and the per well reserve assignments by reserve category. Upper Nukhul Initial Reserves (Arta / East Arta Pools) ---------------------------------------------------------------------------- Initial Recovery Reserve Reserves Factor PIIP(i) Category (MMBbl) (%) (MMBbl) ---------------------------------------------------------------------------- 1P 3.5 10 35 ---------------------------------------------------------------------------- 2P 6.6 12 52 ---------------------------------------------------------------------------- 3P 10.3 14 70 ---------------------------------------------------------------------------- (i) Petroleum initially in place. The Company estimates that 3P reserves have been assigned to approximately 60 percent of the Arta and East Arta upper Nukhul pools based on internally generated maps. Additional drilling will be required to evaluate the reserve potential of the 40 percent of the pools that are outside of the assigned areas. Upper Nukhul Reserves at December 31, 2010 (Arta / East Arta Pools) ---------------------------------------------------------------------------- Undeveloped Reserves ------------------------------------ Total Developed Reserves Dec 31/10 Reserve Reserves(i) Undrilled per Well Reserves Reserves Category (MMBbl) Wells (MBbl)(ii) (MMBbl) (MMBbl) ---------------------------------------------------------------------------- 1P 1.7 12 105 1.3 2.9 ---------------------------------------------------------------------------- 28 2P 2.2 (12+16=28) 137 3.8 6.0 ---------------------------------------------------------------------------- 45 3P 2.7 (12+16+17=45) 158 7.1 9.8 ---------------------------------------------------------------------------- (i) Developed Reserves assigned to 16 wells. (ii) Thousand barrels ("MBbl"). The undeveloped Upper Nukhul wells are estimated to cost $1.3 million per well to drill, complete (including a fracture stimulation) and equip for production. The cost of the respective undeveloped wells is included in the Estimated Future Net Revenues summarized in the tables below. Lower Nukhul Reserves (Arta / East Arta) ---------------------------------------------------------------------------- Reserve Initial Recovery Category Reserves Factor PIIP (MMBbl) (%) (MMBbl) ---------------------------------------------------------------------------- East Arta #7 - 1P 0.9 10 9 ---------------------------------------------------------------------------- - 2P 1.2 13 9 ---------------------------------------------------------------------------- - 3P 1.4 15 9 ---------------------------------------------------------------------------- Unassigned Area 27 ---------------------------------------------------------------------------- Total PIIP 36 ---------------------------------------------------------------------------- Reserves were assigned to the East Arta #7 well only in the Lower Nukhul which represents approximately 25 percent of the total mapped PIIP of 36 MMBbl at year-end 2010. The Lower Nukhul encountered in East Arta #7 is a significantly better quality reservoir than the Upper Nukhul as evidenced by the initial production rate of 2,000 Bopd without a fracture stimulation. The Company anticipates that the initial recovery factors assigned to the Lower Nukhul could increase to the 20 to 30+ percent range over time based on similar quality reservoirs in the West Gharib concession. Additional production history from the Lower Nukhul will be required to support changes to recovery factors. No additional reserves were assigned to the Lower Nukhul formation for undeveloped wells at year end 2010. Additional drilling will be required to delineate the extent of the Lower Nukhul pool during 2011 and 2012. Estimated Future Net Revenues All evaluations and reviews of future net cash flow are stated prior to any provision for interest costs or general and administrative costs and after the deduction of estimated future capital expenditures for wells to which reserves have been assigned. It should not be assumed that the estimated future net cash flow shown below is representative of the fair market value of the Companys properties. There is no assurance that such price and cost assumptions will be attained, and variances could be material. The recovery and reserve estimates of crude oil, NGL and natural gas reserves provided herein are estimates only, and there is no guarantee that the estimated reserves will be recovered. Actual crude oil, NGL and natural gas reserves may be greater than or less than the estimates provided herein. The estimated future net revenues for years ended 2010 and 2009 presented below in millions of U.S. dollars ("$MM") are calculated using DeGolyers price forecast at December 31, 2010 and December 31, 2009, respectively, and constant pricing using the Securities and Exchange Commissions ("SEC") average price (the 12-month average price using in the first day of the month prices during 2010 and 2009, respectively). In the constant price cases, the prices were held constant for the life of the reserves. Present Value of Future Net Revenues, After Tax ($MM) Independent Evaluators Price Forecast Present Value December 31, 2010 Discounted at By Area 0% 5% 10% 15% 20% ---------------------------------------------------------------------------- Proved Egypt $ 380 $ 320 $ 277 $ 244 $ 219 Yemen $ 100 $ 86 $ 75 $ 67 $ 60 ---------------------------------------------------------------------------- Total 1P $ 481 $ 406 $ 353 $ 311 $ 279 ---------------------------------------------------------------------------- Proved plus Probable Egypt $ 544 $ 451 $ 384 $ 332 $ 291 Yemen $ 127 $ 107 $ 92 $ 80 $ 71 ---------------------------------------------------------------------------- Total 2P $ 672 $ 558 $ 475 $ 412 $ 362 ---------------------------------------------------------------------------- Proved plus Probable plus Possible Egypt $ 771 $ 610 $ 502 $ 425 $ 366 Yemen $ 145 $ 121 $ 103 $ 89 $ 78 ---------------------------------------------------------------------------- Total 3P $ 916 $ 731 $ 605 $ 514 $ 444 ---------------------------------------------------------------------------- Present Value December 31, 2009 Discounted at By Area 0% 5% 10% 15% 20% ---------------------------------------------------------------------------- Proved Egypt $ 338 $ 266 $ 219 $ 186 $ 162 Yemen $ 108 $ 90 $ 77 $ 66 $ 58 ---------------------------------------------------------------------------- Total 1P $ 446 $ 356 $ 296 $ 252 $ 220 ---------------------------------------------------------------------------- Proved plus Probable Egypt $ 416 $ 330 $ 272 $ 231 $ 201 Yemen $ 133 $ 107 $ 88 $ 74 $ 64 ---------------------------------------------------------------------------- Total 2P $ 549 $ 437 $ 361 $ 306 $ 265 ---------------------------------------------------------------------------- Proved plus Probable plus Possible Egypt $ 550 $ 420 $ 334 $ 274 $ 231 Yemen $ 144 $ 115 $ 94 $ 79 $ 67 ---------------------------------------------------------------------------- Total 3P $ 694 $ 535 $ 428 $ 353 $ 298 ---------------------------------------------------------------------------- The following table summarizes DeGolyers reference price forecast used to estimate future net revenues: DeGolyer Forecast Pricing ($/Bbl) WTI Forecast Pricing ($/Bbl) 2010 2011 2012 2013 2014 2015 ---------------------------------------------------------------------------- Year-end 2010 $ 88.00 $ 90.78 $ 93.64 $ 96.57 $ 99.58 Year-end 2009 $ 80.00 $ 82.88 $ 85.83 $ 88.88 $ 92.01 $ 93.85 Present Value of Future Net Revenues, After Tax ($MM) Constant Pricing Present Value December 31, 2010 Discounted at By Area 0% 5% 10% 15% 20% ---------------------------------------------------------------------------- Proved Egypt $ 311 $ 265 $ 232 $ 206 $ 185 Yemen $ 77 $ 68 $ 60 $ 53 $ 48 ---------------------------------------------------------------------------- Total 1P $ 388 $ 333 $ 291 $ 259 $ 233 ---------------------------------------------------------------------------- Proved plus Probable Egypt $ 442 $ 370 $ 316 $ 275 $ 241 Yemen $ 99 $ 84 $ 73 $ 64 $ 57 ---------------------------------------------------------------------------- Total 2P $ 541 $ 455 $ 390 $ 339 $ 299 ---------------------------------------------------------------------------- Proved plus Probable plus Possible Egypt $ 612 $ 492 $ 409 $ 348 $ 301 Yemen $ 113 $ 95 $ 82 $ 71 $ 63 ---------------------------------------------------------------------------- Total 3P $ 725 $ 587 $ 491 $ 419 $ 364 ---------------------------------------------------------------------------- Present Value December 31, 2009 Discounted at By Area 0% 5% 10% 15% 20% ---------------------------------------------------------------------------- Proved Egypt $ 223 $ 181 $ 152 $ 132 $ 116 Yemen $ 66 $ 56 $ 48 $ 42 $ 37 ---------------------------------------------------------------------------- Total 1P $ 289 $ 237 $ 201 $ 174 $ 153 ---------------------------------------------------------------------------- Proved plus Probable Egypt $ 272 $ 222 $ 187 $ 161 $ 142 Yemen $ 81 $ 66 $ 56 $ 48 $ 41 ---------------------------------------------------------------------------- Total 2P $ 353 $ 288 $ 243 $ 209 $ 183 ---------------------------------------------------------------------------- Proved plus Probable plus Possible Egypt $ 350 $ 274 $ 222 $ 185 $ 158 Yemen $ 87 $ 71 $ 59 $ 50 $ 43 ---------------------------------------------------------------------------- Total 3P $ 436 $ 345 $ 281 $ 236 $ 202 ---------------------------------------------------------------------------- The constant pricing used to estimate future net revenues is as follows, with Egypt prices based on prices received for West Gharib production and estimated for East Ghazalat and Yemen prices based on prices received for production from Blocks 32 and S-1. Pursuant to the SEC pronouncement in 2009, the Constant price cases are based on the average of the reference price received on the first of each month during the year adjusted for respective differentials at year-end. ---------------------------------------------------------------------------- Constant Pricing ($/Bbl) 2010 2009 ---------------------------------------------------------------------------- Egypt $ 69.50 $ 54.52 ---------------------------------------------------------------------------- Yemen $ 77.81 $ 59.61 ---------------------------------------------------------------------------- 2010 YEAR-END RESERVES (Conference Call and Web Cast) A conference call and web cast to discuss the 2010 year-end reserves will be held today: Time: 2:30 p.m. Mountain Time (4:30 p.m. Eastern Time) Dial-in: (416) 340-8527 or toll-free at 1-877-440-9795 Web cast: http://events.digitalmedia.telus.com/transglobe/021411/index.php Shortly after the conclusion of the call, a replay will be available by dialing (905) 694-9451 or toll-free at 1-800-408-3035. The pass code is 1471702#. The replay will expire at 11:59 p.m. Eastern Time on February 21, 2011. Thereafter, a copy of the call can be accessed on TransGlobes Web site at www.trans-globe.com. TransGlobe Energy Corporation is a Calgary-based, growth-oriented oil and gas exploration and development company focused on the Middle East/North Africa region with production operations in the Arab Republic of Egypt and the Republic of Yemen. TransGlobes common shares trade on the Toronto Stock Exchange under the symbol TGL and on the NASDAQ Exchange under the symbol TGA. Cautionary Statement to Investors: This news release may include certain statements that may be deemed to be "forward-looking statements" within the meaning of the U.S. Private Securities Litigation Reform Act of 1995. Such statements relate to possible future events. All statements other than statements of historical fact may be forward-looking statements. Forward-looking statements are often, but not always, identified by the use of words such as "seek", "anticipate", "plan", "continue", "estimate", "expect", "may", "will", "project", "predict", "potential", "targeting", "intend", "could", "might", "should", "believe" and similar expressions. These statements involve known and unknown risks, uncertainties and other factors that may cause actual results or events to differ materially from those anticipated in such forward-looking statements. Although TransGlobes forward-looking statements are based on the beliefs, expectations, opinions and assumptions of the Companys management on the date the statements are made, such statements are inherently uncertain and provide no guarantee of future performance. Actual results may differ materially from TransGlobes expectations as reflected in such forward-looking statements as a result of various factors, many of which are beyond the control of the Company. These factors include, but are not limited to, unforeseen changes in the rate of production from TransGlobes oil and gas properties, changes in price of crude oil and natural gas, adverse technical factors associated with exploration, development, production or transportation of TransGlobes crude oil and natural gas reserves, changes or disruptions in the political or fiscal regimes in TransGlobes areas of activity, changes in tax, energy or other laws or regulations, changes in significant capital expenditures, delays or disruptions in production due to shortages of skilled manpower, equipment or materials, economic fluctuations, and other factors beyond the Companys control. TransGlobe does not assume any obligation to update forward-looking statements if circumstances or managements beliefs, expectations or opinions should change, other than as required by law, and investors should not attribute undue certainty to, or place undue reliance on, any forward-looking statements. Please consult TransGlobes public filings at www.sedar.com and www.sec.gov/edgar.shtml for further, more detailed information concerning these matters.

CONTACT INFORMATION: TransGlobe Energy Corporation Scott Koyich Investor Relations 403.264.9888 www.trans-globe.com INDUSTRY: Energy and Utilities - Oil and Gas