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The oil and gas industry is usually divided into three major sectors: upstream, midstream, and downstream. The downstream sector is the refining of petroleum crude oil and the processing and purifying of raw natural gas, [1] as well as the marketing and distribution of products derived from crude oil and natural gas.
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 crude, and downstream concerns refining crude oil into various end products .
Downstream, in manufacturing, refers to processes which occur later on in a production sequence or production line. Viewing a company "from order to cash" might have high-level processes such as marketing, sales, order entry, manufacturing, packaging, shipping, and invoicing. Each of these could be deconstructed into many sub-processes and ...
The United States oil industry is made up of thousands of companies, engaged in exploration and production, transportation, refining, distribution, and marketing of oil. The industry is often informally divided into "upstream" (exploration and production), "midstream" (transportation and refining), and "downstream" (distribution and marketing).
Downstream processing and analytical bioseparation both refer to the separation or purification of biological products, but at different scales of operation and for different purposes. Downstream processing implies manufacture of a purified product fit for a specific use, generally in marketable quantities, while analytical bioseparation refers ...
Oil field in California, 1938. The modern history of petroleum began in the nineteenth century with the refining of paraffin from crude oil. The Scottish chemist James Young in 1847 noticed a natural petroleum seepage in the Riddings colliery at Alfreton, Derbyshire from which he distilled a light thin oil suitable for use as lamp oil, at the same time obtaining a thicker oil suitable for ...
Downstream may refer to: Downstream (hydrology) , the direction towards the mouth of a stream, i.e. the direction the current flows Downstream (bioprocess) , when a cell mass from an upstream process (isolated, grown and harvested) is further processed to meet purity and quality requirements
Crude oil production Natural oil seeps such as this in the McKittrick area of California were used by the Native Americans and later mined by settlers.. The history of the petroleum industry in the United States goes back to the early 19th century, although the indigenous peoples, like many ancient societies, have used petroleum seeps since prehistoric times; where found, these seeps signaled ...