Sylvie Willis
Fossil fuels, including diesel, are essential to modern life, powering transportation, industry, and agriculture. However, the finite nature of fossil fuels has led to concerns about future availability. In 2014, British Petroleum (BP) estimated 1.688 trillion barrels of crude oil remained, equivalent to 442,095,238,095 gallons of diesel fuel. At the time, this represented a 53-year supply of diesel. With increasing fuel efficiency and the development of alternative energy sources, the horizon for running out of diesel has extended. Nevertheless, predictions suggest that oil will be depleted by 2052, and if gas production increases to compensate, it will only add eight years to our reserves.
| Characteristics | Values |
|---|---|
| Total barrels of crude oil on Earth | 1,688,000,000,000 barrels (as of 2014) |
| Total gallons of diesel fuel | 442,095,238,095 gallons |
| Mileage of diesel fuel trucks | Enough fuel to travel 2,431,523,809,524 miles |
| Annual usage | 7,964,061,096 gallons of diesel fuel (assuming usage remains constant) |
| Years of diesel fuel left | 53 years (as of 2014) |
| Years of oil left (excluding unproven reserves) | 47 years (as of 2016) |
| Years of oil left (including unproven reserves) | 61 years (as of 2020) |
| Years of natural gas left | 52.8 years (as of 2018) |
| Total years of fossil fuel left (including unproven reserves) | 50 years |
| Year oil will run out | 2052 |
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What You'll Learn
Crude oil extraction
The world consumes around 35 billion barrels of oil annually, which equates to about 97 million barrels per day. In 2014, British Petroleum (BP) estimated that there were 1.688 trillion barrels of crude oil left on Earth, which should last for at least 53 years. However, it is important to note that these are just estimates, and the actual amount of diesel fuel left in the world may vary.
Exploration and Surveying
Geologists and geophysicists employ various methods, such as seismic surveys, to locate potential oil reservoirs. Seismic surveys can be "classic," involving underground explosions to observe seismic responses, or "passive," utilising naturally occurring seismic waves. Other instruments like gravimeters and magnetometers also aid in the search for petroleum deposits.
Drilling
Once a potential reservoir is identified, exploratory drilling commences. This involves drilling a "long hole" over a mile deep into the earth using a drill rig. Horizontal drilling, which involves steering the drill hole horizontally after reaching a certain depth, minimises land disturbance and allows access to oil across a longer distance.
Fracking
After drilling, fracking fluid, composed mainly of water and sand with a small percentage of chemicals, is pumped at high pressure into the shale rock. This creates tiny cracks, releasing the trapped oil and natural gas. The fracking fluid is then recovered and recycled for future use.
Primary Recovery
In some cases, natural pressure from the underground reservoir is sufficient to force the oil to the surface. A collection of valves called a "Christmas tree" is fitted to the wellhead to regulate pressure and control the flow of oil. Beam pumps or electrical submersible pumps may also be used to bring the oil to the surface during primary recovery.
Secondary Recovery
When natural pressure declines, secondary recovery methods are employed. These involve injecting fluids, such as water, steam, acids, or gas mixtures, into the reservoir to maintain or increase pressure, facilitating the continued extraction of oil.
Tertiary Recovery
Tertiary recovery methods are utilised when secondary recovery techniques are no longer sufficient, but extraction can still be profitable. This includes using microbial treatments to break down the hydrocarbon chain in oil, making it easier to recover. The decision to employ tertiary methods depends on the cost of extraction and the current price of crude oil.
Processing and Refinement
Once extracted, crude oil undergoes complex processes in refineries, including distillation and chemical treatments, to produce various usable products. Natural gas processing involves removing impurities and separating key components like methane.
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Diesel fuel mileage
However, it's important to note that fuel efficiency and alternative fuel sources are constantly evolving, extending the horizon before we run out of diesel fuel. Additionally, factors such as driving habits and speed significantly impact fuel mileage and costs. For example, driving at 55 mph can result in up to 39% better fuel mileage compared to driving at 75 mph, despite taking 36% longer to reach the destination.
Seasonal variations also affect diesel fuel mileage. Winter diesel fuel typically undergoes adjustments in composition to enhance performance in cold weather, but these changes often result in a slight reduction in energy value, leading to lower mileage. On the other hand, summer diesel fuel generally exhibits higher energy values and, consequently, improved mileage.
To optimize diesel fuel mileage, several strategies can be employed. One approach is to treat the diesel fuel with a detergent or a specialized product like Dee-Zol, which can significantly enhance efficiency and equipment lifespan. Additionally, factors such as engine modifications, wheel power, and diff ratio can influence mileage, as observed in the Ford F-series trucks with Power Stroke diesel engines.
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Fuel efficiency
As of 2020, the Earth has 1,688,000,000,000 barrels of crude oil, translating to 442,095,238,095 gallons of diesel fuel. Assuming a mileage of 5.5 MPG, this amounts to enough fuel for diesel trucks to travel 2,431,523,809,524 miles, equivalent to travelling from the Earth to the sun and back again over 13,000 times.
However, it's important to note that these estimates are conservative, as fuel efficiency is constantly improving. The trucking industry is also exploring alternative fuel sources, such as electric power or natural gas, which further reduces the reliance on diesel fuel.
Diesel engines are widely recognised for their efficiency and reliability under heavy loads, making them the preferred choice for industries relying on long-haul drives and high-torque applications. Diesel engines have an average fuel efficiency of 20-35% more than their older counterparts, and today's diesel vehicles have improved significantly over older models. New engine designs, improved fuel injection systems, and electronic engine control technologies have made modern diesel engines quieter, smoother, and more environmentally friendly.
The fuel density of diesel engines, which is 13-18% higher than that of gasoline engines, is a significant factor in their higher fuel efficiency rankings. Diesel engines have a higher torque than similar-sized gasoline engines, and diesel fuel contains roughly 10-15% more energy. As a result, diesel vehicles can typically travel 20-35% farther on a gallon of fuel than gasoline vehicles.
While diesel engines have higher fuel efficiency, they also come with a higher price tag due to higher fuel and purchase costs. Additionally, diesel engines are less efficient for light loads and perform better in highway driving or long-haul conditions.
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Alternative fuel sources
While estimates suggest that there is enough diesel fuel to last humanity for at least a few decades, the exact amount of diesel fuel left in the world is unknown. However, the discussion surrounding diesel fuel supplies has sparked interest in alternative fuel sources, which can help reduce carbon emissions and improve fuel efficiency.
Alternative fuels, also known as non-conventional and advanced fuels, are derived from sources other than petroleum. They include gaseous fossil fuels, biofuels, and other renewable energy sources. Here are some alternative fuel sources that can be used in vehicles and for advanced transportation technologies:
- Gaseous Fossil Fuels: Propane, a member of the natural gas family, is the most popular alternative fuel globally. It offers a cleaner-burning, high-performance fuel option with an abundance of supply and cost savings compared to traditional fuels. Other gaseous fossil fuels include natural gas, methane, and ammonia.
- Biofuels: Biodiesel, a type of biofuel, can be manufactured from vegetable oils, animal fats, or recycled cooking grease for use in diesel vehicles. Ethanol, another widely used biofuel, is made from corn and other plant materials and can be used in internal combustion engines. Biofuels are renewable sources of energy, and ongoing research aims to improve the oil yields of biofuel crops.
- Renewable Natural Gas (Biogas): This methane-based gas has similar properties to natural gas and can be used as a transportation fuel. Sources of biogas include landfills, sewage, and animal/agricultural waste.
- Hydrogen: Hydrogen is a potentially emissions-free alternative fuel that can be produced from renewable resources and used in fuel cell electric vehicles.
- Electricity: Electricity is an alternative fuel source for powering electric vehicles, including all-electric and plug-in hybrid electric vehicles.
These alternative fuel sources offer advantages such as improved efficiency, cost reduction, and decreased emissions compared to conventional fuels. They contribute to decarbonization and pollution reduction efforts, making them attractive options for governments, fleets, and individual consumers.
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Fossil fuel reserves
Fossil fuels, including coal, oil, and gas, have been key to industrialization and rising prosperity. However, due to their significant impact on health and the environment, there is a growing need to transition to alternative fuel sources.
In 2014, British Petroleum (BP) estimated that the Earth had 1.688 trillion barrels of crude oil in reserve, which should last for at least 53 years. This equates to approximately 442,095,238,095 gallons of diesel fuel. Assuming a mileage of 5.5 MPG, diesel fuel trucks could travel a total of 2,431,523,809,524 miles with this amount of fuel, enough to travel from the Earth to the sun and back over 13,000 times.
However, these estimates are conservative, as fuel efficiency continues to improve, and companies are discovering new sources of crude oil. Additionally, the share of electricity produced by oil is relatively small, with most electricity generation coming from coal and gas.
The concept of "proven reserves" refers to fossil fuels that can be recovered in the future under existing economic and technological conditions. It is important to note that reserves represent a fraction of total resources, and the amount of reserves can change over time as new resources become accessible or technologically feasible to extract.
To align with the goals of the 2015 Paris Agreement, which aims to limit global warming to well below 2°C and preferably to 1.5°C, a sharp decline in fossil fuel use is necessary. By 2050, nearly 60% of oil and fossil methane gas, and 90% of coal, must remain unextracted to stay within a 1.5°C carbon budget. This highlights the need to transition away from fossil fuels and towards more sustainable energy sources.
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Frequently asked questions
Estimates vary, but according to British Petroleum (BP), the world had 1.688 trillion barrels of crude oil in 2014, which should last for at least 53 years. This translates to approximately 442,095,238,095 gallons of diesel fuel.
Based on the 2014 BP estimate, we have over 50 years' worth of diesel fuel left. However, this assumes a consistent level of consumption and does not account for potential increases in fuel efficiency or the discovery of new sources of crude oil.
It is challenging to provide an exact timeline for when we will deplete our diesel fuel reserves. While some estimates suggest that diesel fuel could last for over 50 years, it is important to remember that these projections are based on current consumption rates and do not factor in potential advancements in fuel efficiency or alternative fuel sources.
The availability of diesel fuel in the future will be influenced by several factors, including fuel efficiency improvements, the adoption of alternative fuel sources, and the discovery of additional sources of crude oil. Additionally, economic factors, such as the rising cost of diesel fuel as reserves dwindle, may accelerate the transition to alternative energy sources.
