The Department of Petroleum Resources (DPR)
This governmental agency is charged with the responsibility of regulation and supervision of all the operations being carried out under licenses and leases in the Oil and Gas. The operations include the exploration, production and marketing of crude oil and refined petroleum products.

The Nigerian National Petroleum Corporation (NNPC)
The NNPC is vested with the exclusive responsibility for upstream and downstream development, which entails exploiting, refining, and marketing Nigeria’s crude oil. The NNPC through the NAPIMS supervises and manage government investment in the Oil and Gas Industry. Since its inception, the NNPC and its subsidiaries have undergone strategic restructuring, which have kept it abreast of opportunities in local and international spheres. NNPCs oil and gas operations are undertaken both in upstream and downstream operations.

All NNPC upstream operations i.e. crude oil production, are currently managed under the Exploration and Production Directorate which consists of the following Strategic Business Units (SBUs) that operate directly under the NNPC:
a. National Petroleum Investment Management Services( NAPIMS)
b. Crude Oil Sales Division ( COSD )
c. Integrated Data Services Limited ( IDLS )
d. Nigerian Petroleum Development Company ( NPDC )
e. Nigerian Gas Company (NGC)

These SBUs are collectively responsible for surveys, seismic data collation and interpretation, crude oil exploration, production, transportation, storage and marketing.

The downstream operations cover crude oil/gas conversion into refined and petrochemical products and finer chemicals, and gas treatment as well as transportation and marketing of the petroleum products. The Downstream plants under the NNPC include the four refineries with a total installed capacity of 445,000 barrels per day; two in Port Harcourt (210 000b/d), one each in Warri and Kaduna (125,000b/d and 110,000b/d respectively) refineries. Also, three petrochemical plants in Warri and Kaduna are part of downstream operations. The Eleme Petrochemical plant currently in Phase I of a three-phase development programme, plus the various gas projects encompass downstream operations.

Nigeria has 5000 kilometres of pipeline network, twenty-one (21) storage depots and nine (9) LPG depots.