Legal Dimensions of Deepwater Petroleum Exploration: Risk Allocation and Liability Under Nigerian Production Sharing Contracts

This study examines risk allocation and liability provisions in deepwater petroleum production sharing contracts (PSCs) in Nigeria, analysing how legal frameworks distribute financial and environmental responsibility between the Nigerian government and international operators in ultra-deep offshore acreage. Nigeria's deepwater sector, encompassing blocks in water depths exceeding 1,000 metres, generates a significant proportion of the country's crude oil production and represents the frontier of exploration activity. Using a doctrinal analytical and comparative methodology, the research examines model deepwater PSC terms approved by the NUPRC, force majeure clauses, blowout liability provisions, and environmental indemnification arrangements. Comparative analysis draws on deepwater PSC frameworks from Brazil (Petrobras) and the United States Gulf of Mexico (post-Macondo regulations). Findings indicate that Nigerian deepwater PSCs inadequately allocate liability for catastrophic blowout events, with government indemnification clauses potentially exposing the Nigerian state to unlimited financial liability. The study recommends a statutory cap on government indemnity obligations and mandatory deepwater insurance for all PSC operators. Keywords: deepwater petroleum, production sharing contracts, liability, risk allocation, Nigeria.