More About Light Sweet Crude Oil
Oil (petroleum) consists mainly of hydrocarbons, stable and bright, thin to thick oily mixture, which occurs naturally as a raw material storage.(Crude oil)
Origin:
The origin of oil is still not fully resolved. The complexity and diversity of chemical composition of the origin of organic matter is given by following theory: The marginal seas with disable ground water circulation, the water in between land and coastal bars at the bottom is extremely poor in oxygen and rich in hydrogen sulfide that decay small plants and small animals; the high salinity inhibits the normal decay: carbohydrates, proteins and fats decompose the sludge passed over in marine organisms under the influence bacteria and enzymes are formed at particular pressure and temperature conditions with the help of mineral catalysts in petroleum . This process took place originally in Tonablagerungen, (the origin of the time since the Cambrian falls about 600 million years ago). However, presumably the time lacked sufficient quantities of organic matter, so that more oil can be detected only by Sinur (500 million years ago) in all geological formations to the present.
Deposits
The shapes of the deposits depend on the geological conditions, but mainly in rejecting the columns and other areas moved into the oil accumulates miles often “oil hoses” up to 4 feet thick or more with each other over many square miles. The largest oil and gas - reserves on the earth are in the Middle East (Iran, Saudi - Arabia) and in the Mediterranean (Libya) and in Venezuela in the United States, Romania and the USSR. The FRG is exploiting, among other things remarkable occurrence in northern Germany and in the foothills area.
In recent years, the oil production extended to underground deposits. In the North Sea area especially the Netherlands and Britain.
Exploration and production
Therefore, the extraction of oil prospecting and exploration of new deposits must precede (exploration). Unknown areas are - after a first inspection - photographed from the air and photogeologisch interpreted. The terrain will be judged favorably by field geologists (prospectors), then examined in detail whether they may contain petroleum traps. In statistics, one in eight test well is successful. In such a borehole drilling production wells are reported.
Preparation:
The produced crude oil is usually a mixture of oil, natural gas, salt water and mud. The raw material is examined for its usefulness through its analysis.
The preparation of the Nabols serves to remove unwanted components. In modern systems of treatment process is carried out wholly or partly during the transport of crude oil from the funding agency in the refinery.
Storage and transport:
crude oil is stored mainly in petroleum and petroleum products with fixed - or floating roof tanks with a capacity up to 20,000 m3. the type of transport depends on the location of the refinery and the tank farm and the location of outlets. The most economical means of transport for the carriage of large oil - or gas between two points is the pipeline . Pipelines consistently serve as a liaison between the oil field and refinery and port. Maritime transport in tankers should be efficient due to low cost and wide reach for the distribution of substantial amounts to various destinations. For onward transportation smaller tankers on inland waterways, Rail wagons and tank cars are used. Occasionally, petroleum products are transported from one refinery to a consumption center in pipelines.
Refining:
All distillates, including gas liquids (including gasoline cracking) should be checked before delivery to the consumer, are often re-treated before further processing. This is done to meet the market requirements for storage stability, odor, color, and the intended use to be, but also to remove corrosive components and catalyst poisons.