Geology of the Campanian M1 sandstone oil reservoir of eastern Ecuador: A delta system sourced from the Amazon Craton

The Campanian M1 sandstone Member of the Napo Formation is one of the main reservoirs of the Capiron-Tiputini oil play system of the eastern part of the Oriente Basin of Ecuador. This study presents a geological model for this reservoir at the Apaika and Nenke oil fields included within the Block 31, and the Eden Yuturi oil field, operated by PETROAMAZONAS EP. The geological characterization of the M1 sandstone is based on an integrated study, which includes core description, electric log analyses and seismic data interpretation.