ExxonMobil and Hess report a discovery from a Stabroek exploration well.
The US$3bn deal could be a message to others that the company really is responsible for the wrongdoings, a lawyer tells BNamericas.
The US International Trade Commission claims subsidized Argentine biofuel is flooding the market, and the dumping is causing "material damage" to the US biodiesel industry.
The country will see three licensing rounds held and eight offshore production units coming online this year.
Average 2017 output hit 4,862b/d, up from 3,081b/d in 2016 and in line with guidance of 5,000b/d, the company said on Thursday.