Ghana’s oil and gas prospects are significant. Recent discoveries indicate oil and gas resources stretch across the country’s shoreline from Cape Three Points in the west to Keta in the east, with Jubilee, Saltpond, and Tweneboa Enyenra Ntomme Oil Fields. The Volta Basin is also believed to hold oil and gas reserves onshore. The petroleum sector has experienced significant growth, particularly since the discovery of oil in commercial quantities in the Jubilee fields in 2007. Some of the major oil and gas activities are conducted by international oil companies such as Tullow Ghana, Vitol, Kosmos Energy, ENI, and Aker Energy. Their sub-contractors include Schlumberger, Baker Hughes, Weatherford, Ocean Rig and Technip. The sector has been the subject of investment disputes, such as the one between the Springfield Group and Eni/Vitol.