The field is estimated to produce 50,000 barrels of oil equivalent (boe) a day at peak production and more than 140 million boe over its lifetime.
Production from Cardamom will flow through the Auger platform, reducing the offshore footprint by using existing infrastructure.
Shell Upstream Americas director Marvin Odum said technologic advances in seismic imaging and drilling have allowed them to both discover and access this new field.
"This is another sizeable deep-water investment by Shell that strengthens energy supplies to the USA," added Odum.
The company discovered the Cardamom reservoir in 2010 using advanced seismic technology that was able to produce improved images versus traditional seismic methods.
The discovery was confirmed by drilling a well from Shell’s Auger platform and the exploration wells were drilled more than 6.4km deep.
