EXHIBIT 10.21 EMPLOYMENT AGREEMENT This Employment Agreement (this "Agreement") is entered into between Aviva Petroleum Inc., a Texas corporation (the "Company"), and James L. Busby, a resident of Dallas, Texas (the "Executive"), effective February 1,...Employment Agreement • March 30th, 2000 • Aviva Petroleum Inc /Tx/ • Crude petroleum & natural gas • Texas
EXHIBIT 10.19 ECOPETROL CONTRACT NO. GCI - 001 - 00 SELLER: ARGOSY ENERGY INTERNATIONAL PURPOSE: PURCHASE AND SALES OF THE SANTANA CRUDE OIL TERM: JANUARY 1/ST/, 2000 TO DECEMBER 31/ST/, 2000 VALUE: UNDETERMINED AMOUNT The Contracting Parties on one...Purchase and Sale Agreement • March 30th, 2000 • Aviva Petroleum Inc /Tx/ • Crude petroleum & natural gas
