Oil is South Sudan’s most valuable natural resource and its greatest economic vulnerability. The country controls productive fields in the Muglad and Melut basins, but it has no coastline, limited refining capacity and no independent route to international markets.
Almost every exported barrel must travel north through Sudan. Pipelines connect South Sudanese fields with processing facilities and the Red Sea terminal at Port Sudan. This arrangement links the economies of two politically separate countries whose infrastructure was built when they formed a single state.
The dependence has shaped South Sudan since independence in 2011. Oil provides most export earnings and a very large share of government revenue, but production has repeatedly been disrupted by disputes, internal conflict, damaged infrastructure and war in neighboring Sudan. South Sudan is therefore an oil-producing country whose most important petroleum assets extend far beyond its own borders.
Oil Production Supports Almost the Entire Formal Economy
South Sudan produced approximately 149,000 barrels per day of liquid fuels in 2023, before major pipeline disruption sharply reduced output. Production has been lower than the levels achieved before independence and has remained relatively flat over much of the past decade.
Even at reduced volumes, oil dominates the country’s formal economy. It accounts for nearly all merchandise exports and around 90% of public revenue in some assessments. When crude exports are operating normally, they supply the government with foreign currency that can be used to pay salaries, finance imports and support public spending.
When exports stop, the consequences spread quickly. Government revenue declines, foreign currency becomes scarce and the South Sudanese pound comes under pressure. Fuel, food and other imported goods become more expensive. Public-sector salaries may fall into arrears, while spending on roads, health services and education becomes more difficult.
The close relationship between oil output and national income means that a pipeline failure can produce a wider economic crisis even when the oil fields themselves remain capable of production. South Sudan has limited financial reserves and few alternative export industries able to replace lost petroleum earnings.
Oil is therefore more than one economic sector. It functions as the financial base of the state.
The Melut and Muglad Basins Produce Different Crude Grades
Most South Sudanese production comes from fields in the Melut Basin in the northeast and the Muglad Basin farther west. These producing regions supply the country’s two main export grades: Dar Blend and Nile Blend.
Dar Blend is produced mainly from Blocks 3 and 7 in the Melut Basin, including the important Paloch area in Upper Nile State. It is a heavy, low-sulfur crude with a high acid content. These qualities can make it more difficult and expensive for some refineries to process, limiting the number of suitable buyers or affecting the price received.
Nile Blend is a lighter and generally more attractive crude produced from fields associated with the Muglad Basin. It provides relatively strong yields of middle distillates such as diesel and is connected with production areas around Unity State and the northern border region.
The state-owned Nile Petroleum Corporation, usually known as Nilepet, participates in the industry through joint operating companies. These include Dar Petroleum Operating Company, Greater Pioneer Operating Company and Sudd Petroleum Operating Company. Foreign partners have included China National Petroleum Corporation, Sinopec, Malaysia’s Petronas and India’s ONGC Videsh.
Foreign companies supplied much of the capital and technical knowledge used to develop the fields and pipeline system. Their future participation is important because South Sudan needs investment in field maintenance, enhanced recovery, drilling and infrastructure rehabilitation.
Ownership has also been changing. Petronas moved to exit its South Sudanese assets, creating questions about who would acquire its interests and how new investment would be financed. Nilepet has sought a larger operational role, but expanding national control requires technical capacity as well as legal ownership.
The Export Pipelines Are the Sector’s Critical Weak Point
South Sudan’s oil becomes commercially valuable only when it can reach the coast. Two major pipeline systems carry crude north through Sudan.
The Petrodar system transports Dar Blend from the Melut Basin toward Port Sudan. The Greater Nile system carries Nile Blend through facilities associated with Heglig before continuing to the Red Sea. Sudan receives processing, transportation and transit payments in return for providing this route.
This arrangement has no practical large-scale alternative. Proposals for a new pipeline through Kenya have existed for years, sometimes connected to the wider Lamu Port-South Sudan-Ethiopia Transport corridor. However, such a project would require major financing, long construction timelines, secure operating territory and enough future production to justify the cost.
The danger of dependence became clear again in February 2024, when damage to a pipeline carrying about 70% of South Sudan’s oil exports caused a prolonged shutdown. Production fell from an average near 144,000 barrels per day to around 60,000 barrels per day as storage filled and operators lost the ability to move crude.
Exports through the main line resumed during 2025, allowing production and government income to recover. World Bank reporting later placed output at approximately 157,000 barrels per day in early fiscal year 2026.
Recovery did not remove the risk. Drone attacks and fighting near Sudanese oil infrastructure caused additional interruptions during late 2025. Heglig, which contains processing facilities essential to South Sudanese flows, became a strategic focus in Sudan’s war. South Sudanese forces were deployed to help guard the area under an arrangement intended to prevent damage and maintain production.
The security of South Sudan’s oil exports consequently depends on military and political conditions inside another country. Even successful protection of the fields within South Sudan cannot guarantee reliable access to Port Sudan.
Limited Refining Means Crude Wealth Does Not Ensure Fuel Supply
South Sudan exports crude but still depends heavily on imported petroleum products. Domestic refining capacity is small, and fuel distribution is constrained by poor roads, limited storage and high transport costs.
A small refinery near Bentiu in Unity State has nameplate capacity of about 10,000 barrels per day and can produce diesel, gasoline and heavy fuel oil from local crude. Its scale is too limited to transform the national market, and operating reliability has been affected by security, infrastructure and investment conditions.
Additional refineries have been proposed in different parts of the country. A functioning domestic refining system could reduce fuel imports, improve local supply and keep more value inside the economy. It could also provide diesel and other products for agriculture, electricity generation, construction and transport.
However, refinery construction requires stable crude supply, electricity, water, skilled workers, storage, roads and reliable demand. Building a facility without the supporting infrastructure could create another underused asset.
South Sudan’s immediate downstream challenge is therefore not simply the absence of refinery capacity. It is the weakness of the entire system needed to move, process and distribute petroleum safely and consistently.
Mature Fields Require Investment and Technical Recovery
Many of South Sudan’s producing fields are mature. Output naturally declines as reservoir pressure falls, water production increases and easily recoverable oil is depleted. Maintaining production requires continued drilling, well repairs, water management and enhanced oil-recovery techniques.
Conflict has delayed maintenance and discouraged exploration. Flooding can restrict access to production areas, while poor roads increase the cost of moving workers and equipment. Foreign-exchange shortages can also make it difficult to purchase spare parts or specialized services.
New discoveries could improve the long-term position, but exploration alone will not solve the industry’s structural problems. Any new field would still need gathering systems, processing facilities and a secure export route. Investors must also judge whether contracts, taxation, security and revenue arrangements will remain stable over the life of a project.
South Sudan consequently faces two connected tasks. It must recover more oil from established fields while creating conditions that make exploration and infrastructure investment commercially reasonable.
Oil Revenue Has Not Yet Produced Broad Economic Security
South Sudan has earned billions of dollars from petroleum since independence, yet most households have seen limited improvement in public services or economic opportunity. Weak institutions, conflict, opaque spending and disputed revenue programs have reduced the developmental effect of oil income.
Heavy dependence also encourages short-term financial decisions. When governments borrow against future crude sales or allocate oil directly to infrastructure contracts, future budgets may lose revenue before the oil is produced. A fall in output or price can then create obligations that are difficult to meet.
Better revenue management would not remove pipeline risk, but it could reduce the damage caused by disruptions. Transparent budgeting, credible public accounts and investment in agriculture, transport and non-oil businesses could gradually weaken the connection between every barrel exported and the government’s ability to function.
The central issue is not whether South Sudan possesses oil. It is whether petroleum income can be converted into infrastructure, productive capacity and services that continue to matter after individual fields decline.
The Future Depends on More Than Higher Production
South Sudan’s oil sector can still support economic recovery. Production has the potential to increase through field rehabilitation, improved operations and renewed investment. Domestic refining could capture additional value, while stronger institutions could direct more revenue toward national development.
The immediate priority remains the export corridor through Sudan. Without secure pipelines, processing facilities and access to Port Sudan, higher wellhead production has little commercial use. The industry’s future will therefore depend on cooperation with Sudan, protection of cross-border infrastructure and the ability to prevent regional conflict from repeatedly stopping exports.
Over the longer term, South Sudan must reduce the economic burden placed on oil. Stable production can provide the resources needed for diversification, but it cannot substitute for it. The country’s petroleum sector will remain fragile until oil revenue supports an economy capable of surviving the next pipeline shutdown.