wikiHow to Go Geocaching. Geocaching is an increasingly popular, inclusive, fun and healthy pastime for individuals of all ages. It is also great for groups like families, friends, classes and youth groups working as teams. The sport combines technology with adventure and nature, a combination that some people didn't think was possible.
Crude oil, commonly known as petroleum, is a liquid found within the Earth comprised of hydrocarbons, organic compounds and small amounts of metal.While hydrocarbons are usually the primary component of crude oil, their composition can vary from 50%-97% depending on the type of crude oil and how it is extracted.ather than using drills, crude oil is extracted from oil sands through strip mining or a variety of other techniques used to reduce the viscosity of the oil. This process can be far more expensive than traditional drilling and is found in high abundance only in Canada and Venezuela.
2013-06-03 10:54:32. Some marker crudes with their sulfur content (horizontal) and API gravity (vertical) and relative production quantity.See also: Benchmark (crude oil). The petroleum industry generally classifies crude oil by the geographic location it is produced in (e.g.West Texas Intermediate, Brent, or Oman), its API gravity (an oil industry measure of density), and its sulfur content.ach crude oil has unique molecular characteristics which are understood by the use of crude oil assay analysis in petroleum laboratories. Barrels from an area in which the crude oil's molecular characteristics have been determined and the oil has been classified are used as pricing references throughout the world.