More than 320 feet of "whole core" was extracted in the same Miocene intervals as seen in the discovery well, according to US independent Anadarko.
"The partnership is currently evaluating potential development options for the Yeti discovery," the company said in a fourth-quarter operations update.
Norway's Statoil operates Yeti with a 50% stake, with Anadarko on 37.5% and Samson Offshore on 12.5%.
