Noble Energy, Inc. is an independent energy company engaged in crude oil, natural gas and natural gas liquids exploration and production. Its operations are grouped into four components: the United States; West Africa (Equatorial Guinea, Cameroon, Gabon and Sierra Leone; Eastern Mediterranean (Israel and Cyprus), and Other International and Corporate. Its assets in the United States include DJ Basin, Marcellus Shale, Deepwater Gulf of Mexico and Other Onshore US. The onshore West Africa includes the Alba field, Block O and Block I offshore Equatorial Guinea, the YoYo mining concession and Tilapia PSC, offshore Cameroon, two blocks offshore Sierra Leone, and one block offshore Gabon. In the Eastern Mediterranean, it has six leases and five licenses operated offshore Israel and one license operated offshore Cyprus. Other International includes various international new ventures, such as offshore Nicaragua and offshore Falkland Islands.