EXHIBIT 10.1 ECOPETROL CONTRACT NO. GCI - 001 - 01 SELLER: ARGOSY ENERGY INTERNATIONAL PURPOSE: PURCHASE AND SALES OF THE SANTANA CRUDE OIL TERM: JANUARY 1, 2001 TO OCTOBER 31, 2001 VALUE: UNDETERMINED AMOUNT The Contracting Parties on one hand,...Purchase and Sale Agreement • August 13th, 2001 • Aviva Petroleum Inc /Tx/ • Crude petroleum & natural gas
