Oil Field


DEFINITION of 'Oil Field'

A tract of land used for extracting petroleum, or crude oil, from the ground. Although the exact origin of oil is still contested, most consider petroleum a "fossil" fuel, created from dead organic material often found in ancient seabeds thousands of meters below the surface of the earth. There are more than 40,000 oil fields around the world, many of the largest of which are found in the Middle East.


While tens of thousands of oil fields have been discovered, less than than 10% of them have had a significant impact on worldwide crude oil supply. Ghawar Field in Saudi Arabia, which started production in 1951, is by far the largest oil field uncovered so far, having yielded about 60 billion barrels of "black gold" through 2005.

  1. Tertiary Recovery

    A technique used to extract the remaining oil from previously ...
  2. Commercial Well

    Any oil or gas drilling site that produces enough oil or gas ...
  3. Crude Stockpiles

    Reserves of unrefined petroleum, measured in numbers of barrels. ...
  4. Oil Refinery

    An industrial plant that refines crude oil into petroleum products ...
  5. Crude Oil

    A naturally occurring, unrefined petroleum product composed of ...
  6. Proven Reserves

    After an oil exploration firm conducts a seismic survey on a ...
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    The laws of supply and demand affect all goods in the market. The degree to which prices respond to changes in supply and ... Read Full Answer >>
  2. How much oil must be produced to maintain inventory levels in the United States?

    Domestic energy investors should track the reserve inventory of crude oil for the United States, which is released in a weekly ... Read Full Answer >>
  3. To what extent is the oil and gas sector dominated by a few major companies?

    Oil and gas are two expansive and highly diverse product lines, with active competition domestically and internationally. ... Read Full Answer >>
  4. How do the costs of oil sands producers compare to traditional drillers?

    The oil sands of Canada are some of the most expensive crude oil assets in the world to produce. Each asset type, such as ... Read Full Answer >>
  5. Do all oil companies received the quoted price of West Texas Intermediate for their ...

    The quoted, or spot, price of West Texas Intermediate, or WTI, crude oil is just one of several benchmark oil prices. The ... Read Full Answer >>
  6. How long does it take an oil and gas producer to go from drilling to production?

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