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The exploration history of the Guyana/Suriname Basin and the Brazilian Equatorial Margins have been dramatically different since the discovery of the Liza Filed in Guyana since 2015; considerably more wells have been drilled and seismic acquired in Guyana and Suriname than in equatorial offshore Brazil. Modern data paired with traditional geologic integration and block sizes that incentivize learning by drilling have enabled Guyana to experience a period of rapid exploration, appraisal, and development while activity on the equatorial margin of Brazil has languished. Comparison of geologic, industry and regulatory conditions illuminates intriguing similarities and dramatic differences and it is possible that shared approaches may enable success along the entire equatorial margin.