Frequently Asked Questions
- 1. Where in Uganda is Petroleum (Oil and Gas) Exploration taking place?
Oil and Gas Exploration in Uganda is currently taking place in the Albertine Graben (figure 1). The Graben is part of the East African Rift System and runs along Uganda’s western border with the Democratic Republic of Congo (DRC). The Graben is approximately 500 km long, averaging 45 km in width and 23,000 square kilometres in Uganda.
- 2. What is the Petroleum Value Chain?
The Petroleum Value Chain is the series of activities staring from exploring for oil to consumption of petroleum products. The Petroleum Value Chain has three major phases, namely; upstream, midstream, and downstream. Upstream covers exploration, development and production of petroleum together with decommissioning. Exploration refers to the search for petroleum accumulations and includes appraisal of the same to establish the extent (distribution) of the petroleum accumulation below the earth’s surface and the ease of flow of the petroleum from this accumulation. Development involves preparing for production by putting in place facilities and infrastructure for collection, transportation and processing of crude oil and gas. Production is the removal of petroleum from the accumulations below the earth’s surface to the surface, and preparing the petroleum for transportation and refining. Midstream includes bulk transportation of petroleum commodities (crude oil and natural gas) and products (gasoline, diesel, jet fuel, etc), refining of oil and conversion of gas. It also includes converting oil and gas into marketable products and chemicals. Downstream deals with distribution, marketing and sale of petroleum products. In some countries, downstream and midstream operations are considered together as downstream operations.
- 3. When did Uganda confirm commercial oil and gas resources?
Uganda confirmed commercial petroleum resources in 2006. Efforts to find oil in Uganda started as far back as the 1920s. These efforts led to the identification of surface seepages of oil and drilling of shallow wells around these seepages before 1945. One deep exploration well (Waki-1) was also drilled near Butiaba, in Buliisa district during 1938. These initial efforts were not successful in establishing commercial deposits of petroleum in the country. Renewed and consistent exploration efforts commenced in the 1980s which culminated into confirmation of commercial petroleum resources in Uganda during 2006.
- 4. How much oil has been discovered in Uganda?
The estimate resources in the country have increased from 300 million barrels in 2006 to 2 billion and 3.5 billion barrels in 2010 and 2012 respectively. As at June 2016, the discovered resources in the country were estimated at 6.0 billion barrels of oil equivalent in place with about 1.4 billion barrels of these resources recoverable (1 barrel is equivalent to 159 litres). The area explored presently represents less than 40% of the total area with the potential for petroleum production in the Albertine Graben and only 12% is licensed. There is therefore potential for additional petroleum resources to be discovered in the country when additional exploration is undertaken.
- 5. Can all the 6.0 billion barrels of oil in place be recovered?
Geological factors including the fact that oil in the subsurface is stored in rocks with pores (similar to water in a sponge) and within structures, makes it impossible to recover 100% of the resources. The amount of oil to be recovered depends on the properties of the rock such as how the pores within the rock are connected to one another, reservoir pressures and type of oil, among others. Globally, an average of 20 to 30 per cent of the oil in place is recovered economically using the available technologies. Enhanced Oil Recovery (EOR) methods are also often used to increase the amount of oil recovered from an oil field using different technologies to supplement the natural production. EOR is used to improve movement of oil in the oil field and the different methods of EOR include polymer flooding, gas injection, and steam flooding.
- 6. How many Petroleum discoveries have been made in Uganda to date?
Twenty-one (21) oil and/or gas discoveries have been made in Uganda to date.
- 7. Which oil companies are licensed in Uganda?
The oil companies currently licensed to explore, develop and produce petroleum in the country are; Total E&P Uganda BV., Tullow Uganda Operations Pty Ltd, Tullow Uganda Limited and China National Offshore Oil Corporation (CNOOC) Uganda Limited who are Joint Venture Partners, and Armour Energy Limited and Oranto Petroleum Limited whose licenses were issued during 2017.
- 8. Who owns the oil and gas resources in Uganda?
Article 244 of the Constitution of Uganda vests the ownership and control of minerals and petroleum in the Government on behalf of the people. The Government therefore holds all resources in trust for the people of Uganda. The Constitution also empowers Parliament to make laws regulating the exploration and exploitation of minerals and petroleum. In this regard, Section 4 of the Petroleum (Exploration, Development and Production) Act 2013 vests petroleum resources in the Government on behalf of the people.
- 9. How long will the country’s oil and gas resources last?
In Uganda, at a projected peak production rate of about 200,000 barrels of oil per day, it is estimated that the current discovered resources can last 20-30 years. The length of time that oil and gas resources last in any given country largely depends on the amount of discovered resources and the rate at which these resources are produced. This rate is determined by many factors, including technical, strategic and economic reasons. However, additional exploration and appraisal is expected to be undertaken in the country, and this could lead to additional resources being discovered in the country, hence prolonging this production period. It is important that these resources are produced gradually in an efficient manner and at an economic rate that will also provide a sustained benefit to the country.
- 10. How far in the ground does the petroleum lie?
The depth at which hydrocarbon deposits are found varies greatly around the world. Very shallow deposits of less than 30metres were found in the early days of exploration. Today, it is common to produce oil from more than 3,000 metres. In Uganda, petroleum has been encountered between 290 metres and 3,000metres in the discoveries that have been made in the Albertine Graben to date.
- 11. What is the quality of Uganda’s crude oil?
Different types of crude oil are produced around the world. Two of the most important quality characteristics of oil are its density and sulphur content. Density ranges from light to heavy, while sulphur content is characterized as sweet or sour. Crude oils that are light (with degrees of API gravity above 360) and sweet (low sulphur content) are usually priced higher than heavy, sour crude oils. Uganda’s crude oil has; API range of 17 degrees Celcius ~ 33 degrees Celcius, with a low sulphur content but is waxy with an average pour point of 40 degreesC and hence solidifies at room temperature. Uganda’s crude oil is therefore described as sweet and medium to heavy.
- 12. What happens after a petroleum discovery has been made?
In accordance with section 66 of the PEDP Act 2013, when a discovery is made, the licensee is required to notify the Government and submit a technical evaluation. The licensed Oil Company appraises the discovery to determine the extent of the discovery and the characteristics of the crude oil therein by drilling additional wells (figure 5) and/or undertaking well testing. Following completion of appraisal and interpretation of the data acquired during appraisal, the company applies for a production licence and this application is supported by a Field Development Plan (FDP) which details how the company intends to produce and transport the petroleum in the discovery; and a Petroleum Reservoir Report (PRR) that describes the technical understanding of the reservoir below the surface. These reports are reviewed by Government and discussed with the company until agreement is reached and a production license is issued. The company then prepares the field for production by drilling injection and production wells and also putting in place other surface facilities for production and processing of crude oil.
- 13. What is the plan for commercialising the discovered oil and gas resources?
The National Oil and Gas Policy, 2008 recommends value addition through refining. A Memorandum of Understanding (MoU) between Government and the Licensed Oil Companies which provides for a commercialization plan for the development of the discovered oil and gas resources in the country was concluded during February 2014. The MoU provides for the use of petroleum for power generation, supply of Crude Oil to the refinery to be developed in Uganda and export of Crude Oil through an export pipeline or any other viable options.
- 14. Has commercial production of oil and/or gas started?
Commercial production can only commence following the issuance of a production license, which authorises the holder to produce petroleum from a field whose appraisal has been completed and development plan approved. Commercial production of petroleum also requires putting in place infrastructure such as processing plants to separate the crude from impurities like sand and water, pipelines for transportation of crude from the fields, a refinery to transform the crude into the various products such as Diesel, Petrol, and Kerosene and facilities for the export of crude oil. These and other infrastructure such as the road networks, water and electricity in the Albertine Graben are being upgraded to support these developments. Full scale production has been earmarked for end of 2020, after the necessary infrastructure has been put in place.
- 15. How much gas has been discovered in Uganda to date?
Natural gas can be "associated gas" (found within oil), or "non-associated/ free gas" (independent natural gas reservoir). Associated gas cannot exist without oil in the reservoir which doesn’t necessarily apply to free gas reservoirs. The associated gas established in the country to date is estimated at 170 billion cubic feet (bcf) while non-associated gas is estimated at 500bcf.
- 16. How can the gas resources be utilised?
The gas resources are commercially viable and can be used for power generation. In addition, natural gas can be used for domestic purposes such as heating and cooking. It can also be used as fuel for vehicles, the production of iron and steel from iron ore, in fertilizer plants and as a chemical feedstock in the manufacture of plastics and other commercially important organic chemicals. Natural gas can also be re-injected into the reservoirs to maintain pressure to support production of crude oil through enhancement of oil recovery. Alternatively, after processing, gas can be used for on-site electricity generation or used as feedstock for different petrochemical industries. Another possibility is to export natural gas as a liquid. Gas-to-liquids (GTL) is a developing technology that converts natural gas into synthetic gasoline, diesel, or jet fuel.