Estimated to contain more than 36 billion barrels of proven oil reserves and boasting the largest natural gas reserves in Africa, OPEC-member Nigeria is a bustling hub for deepwater and ultra-deepwater exploration. The West African nation is an important supplier of light, sweet crude oil to the U.S., and disruptions in Nigerian production due to instability in the region can affect global oil prices. Nigeria is dependent on its oil sector, primarily located in the Niger Delta, which barrels in more than 95% of export earnings and some 85% of government revenues. Major producers in the region include Nigerian National Petroleum Corporation (NNPC), Shell, Chevron, ExxonMobil, Total and Eni/Agip.
Welding is a type of fabrication that is used to join metals or thermoplastics together by fusion. This is done by heating and melting part of the material and often adding a filler material which when cooled will form a strong bond. Pressure may also be used to weld, with or without the application of heat.<br/>There are different methods of welding used depending on the type of materials and desired end result, and Welders must be properly qualified for the type of welding work carried out.