Oil refinery in the context of "Oil Campaign of World War II"

Burgas (Bulgarian: Бургас, pronounced [burˈɡas] ), sometimes transliterated as Bourgas, is the second largest city on the Bulgarian Black Sea Coast in the region of Northern Thrace and the fourth-largest city in Bulgaria after Sofia, Plovdiv, and Varna, with a population of 210,646 inhabitants, while 226,137 live in its urban area. It is the capital of Burgas Province and an important industrial, transport, cultural and tourist centre.

The city is surrounded by the Burgas Lakes and located at the westernmost point of the Black Sea, at the large Burgas Bay. LUKOIL Neftochim Burgas is the largest oil refinery in southeastern Europe and the largest industrial enterprise. The Port of Burgas is the second largest port in Bulgaria, and Burgas Airport is the second most important in the country. Burgas is the centre of the Bulgarian fishing and fish processing industry.

The petroleum industry, also known as the oil industry, includes the global processes of exploration, extraction, refining, transportation (often by oil tankers and pipelines), and marketing of petroleum products. The largest volume products of the industry are fuel oil and gasoline (petrol). Petroleum is also the raw material for many chemical products, including pharmaceuticals, solvents, fertilizers, pesticides, synthetic fragrances, and plastics. The industry is usually divided into three major components: upstream, midstream, and downstream. Upstream regards exploration and extraction of crude oil, midstream encompasses transportation and storage of it, and downstream concerns refining crude oil into various end products.

Petroleum is vital to many industries, and is necessary for the maintenance of industrial civilization in its current configuration, making it a critical concern for many nations. Oil accounts for a large percentage of the world's energy consumption, ranging from a low of 32% for Europe and Asia, to a high of 53% for the Middle East.

World energy supply and consumption refers to the global supply of energy resources and its consumption. The system of global energy supply consists of the energy development, refinement, and trade of energy. Energy supplies may exist in various forms such as raw resources or more processed and refined forms of energy. The raw energy resources include for example coal, unprocessed oil and gas, uranium. In comparison, the refined forms of energy include for example refined oil that becomes fuel and electricity. Energy resources may be used in various different ways, depending on the specific resource (e.g. coal), and intended end use (industrial, residential, etc.). Energy production and consumption play a significant role in the global economy. It is needed in industry and global transportation. The total energy supply chain, from production to final consumption, involves many activities that cause a loss of useful energy.

Total energy consumption tends to increase by about 1–2% per year. As of 2022, energy consumption is still about 80% from fossil fuels. More recently, renewable energy has been growing rapidly, averaging about 20% increase per year in the 2010s.

LUKOIL Neftohim Burgas (Bulgarian: ЛУКОЙЛ Нефтохим Бургас), based in Burgas, Bulgaria, sometimes spelt "Neftochim Burgas," is one of the largest oil refineries in the Balkans and the largest industrial enterprise in Bulgaria.

Owned by Russian oil giant LUKOIL, the refinery has the biggest contribution among the privately owned enterprises to the country's GDP and to the state budget revenues. LUKOIL Neftohim Burgas is the leading producer and supplier of liquid fuels, petrochemicals and polymers for Bulgaria and the region and one of the leading companies in its field in Europe.

The energy industry refers to all of the industries involved in the production and sale of energy, including fuel extraction, manufacturing, refining and distribution. Modern society consumes large amounts of fuel, and the energy industry is a crucial part of the infrastructure and maintenance of society in almost all countries.

In particular, the energy industry comprises:

Kufra, Kufrah or Kofra (Arabic: الكفرة Al Kufra), also spelled Cufra in Italian, is the largest district of Libya and the second largest such district in Africa. It is slightly smaller than the country of Turkmenistan. Its capital is Al Jawf, one of the oases in Kufra basin. There is a very large oil refinery near the capital. In the late 15th century, Leo Africanus reported an oasis in the land of the Berdoa, visited by a caravan coming from Awjila. It is possible that this oasis in question was either the Al Jawf or the Taiserbo oasis, and on early modern maps, the Al Kufra region was often labelled as Berdoa based on this report.

An oil spill is the release of a liquid petroleum hydrocarbon into the environment, especially the marine ecosystem, due to human activity, and is a form of pollution. The term is usually given to marine oil spills, where oil is released into the ocean or coastal waters, but spills may also occur on land. Oil spills can result from the release of crude oil from tankers, offshore platforms, drilling rigs, and wells. They may also involve spills of refined petroleum products, such as gasoline and diesel fuel, as well as their by-products. Additionally, heavier fuels used by large ships, such as bunker fuel, or spills of any oily refuse or waste oil, contribute to such incidents. These spills can have severe environmental and economic consequences.

Oil spills penetrate into the structure of the plumage of birds and the fur of mammals, reducing its insulating ability, and making them more vulnerable to temperature fluctuations and much less buoyant in the water. Cleanup and recovery from an oil spill is difficult and depends upon many factors, including the type of oil spilled, the temperature of the water (affecting evaporation and biodegradation), and the types of shorelines and beaches involved. Spills may take weeks, months or even years to clean up.

A by-product or byproduct is a secondary product derived from a production process, manufacturing process or chemical reaction; it is not the primary product or service being produced.

A by-product can be useful and marketable or it can be considered waste: for example, bran, which is a byproduct of the milling of wheat into refined flour, is sometimes composted or burned for disposal, but in other cases, it can be used as a nutritious ingredient in human food or animal feed. Gasoline was once a byproduct of oil refining that later became a desirable commercial product as motor fuel. The plastic used in plastic shopping bags also started as a by-product of oil refining. By-products are sometimes called co-products to indicate that although they are secondary, they are desired products. For example, hides and leather may be called co-products of beef production. There is no strict distinction between by-products and co-products.