Al-Shalwi: Libya’s Oil Reserves… Between the Official Figure and the Technical Reality

By: Oil and Economic Expert Abdulmonsef Al-Shalwi

Oil reserves are among the most important strategic indicators reflecting the size of a country’s natural wealth. In Libya, they represent a fundamental pillar of the national economy and a key element in planning production, investment, and sustainable development.

In this context, the figure of 48.4 billion barrels stands out as the internationally circulated estimate of Libya’s proven oil reserves. As an oil and economic expert, I believe that examining this figure requires a technical and objective assessment based on the data and standards adopted by the oil industry, بعيد from impressions and incomplete conclusions.

First: The International Reference for the Figure

The figure of 48.4 billion barrels is not merely an old domestic announcement. It is an estimate that has continued to appear in specialised international reports and sources. Both the Organization of the Petroleum Exporting Countries (OPEC) and the US Energy Information Administration (EIA) have indicated that Libya possesses approximately 48 billion barrels of proven oil reserves, reflecting the continued use of this estimate in international oil statistics.

It is important to distinguish between how long ago the figure was announced and whether it is inaccurate. The passage of time alone does not constitute technical evidence that reserves have declined or that the estimate is inaccurate, unless this is supported by a documented scientific review.

Second: Cumulative Production and Its Relationship to Reserves

From a technical perspective, cumulative production cannot simply be subtracted from a historical reserve figure, with the resulting amount treated as the current reserve level. In addition to production, reserves are affected by new discoveries, field reassessments, technological developments, improvements in recovery factors, and economic variables.

Accordingly, determining remaining reserves requires calculating cumulative production alongside the additions and technical revisions made over the same period. Therefore, production volumes alone are insufficient to conclude that reserves have declined, just as it would be inappropriate to assume that additions have offset production without documented data.

Third: Proven Reserves and Future Potential

Libya possesses significant exploration potential, and extensive areas still require further surveying, exploration, and assessment. In addition, there are discovered fields whose development has yet to be completed.

This highlights the importance of distinguishing between proven reserves, discovered resources, and future oil potential. Undiscovered resources or resources not classified as proven reserves must not be added to the officially reported figure. This distinction is essential to presenting an accurate picture of the size of Libya’s oil wealth and its development prospects.

Fourth: Updating Assessments and Developing Reserves

Maintaining the accuracy of reserve data requires regularly updating technical assessments, expanding exploration programmes, developing discovered fields, and leveraging modern technologies to improve recovery factors. It also requires establishing a unified national database that accurately reflects the actual state of oil reserves and resources.

Limited exploration and development activities in certain areas over recent years do not necessarily indicate limited oil wealth. Rather, they may reflect investment opportunities that remain available to Libya’s oil sector.

Conclusion and Technical Position

In light of the above, I reaffirm that 48.4 billion barrels remains the internationally circulated reference estimate for Libya’s proven oil reserves, and there are insufficient technical grounds to question it solely because of the date on which it was originally announced.

Any discussion about a decline in reserves or a change in their volume must be based on a comprehensive technical assessment that takes into account cumulative production, additions, revisions, and field reassessments, in accordance with the standards adopted by the oil industry.

My professional position is clear: the figure of 48.4 billion barrels remains the internationally recognised and circulated statistical reference for Libya’s proven oil reserves, until an official and comprehensive technical assessment establishes otherwise.

At the same time, reviewing and updating this data remains the responsibility of the relevant institutions and is essential to strengthening the credibility of the sector and its capacity for planning and investment.

The issue is not about defending a historical figure, but about establishing a scientific approach to assessing Libya’s oil wealth—one that does not accept challenges without technical evidence, nor reject reassessment when it is supported by documented data.