Oil well
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An oil well is a drillhole boring in Earth that is designed to bring petroleum oil hydrocarbons to the surface. Usually some natural gas is released as associated petroleum gas along with the oil. A w
The pumpjack, such as this one located south of Midland, is a common sight in West Texas.
Early oil field exploitation in Pennsylvania, around 1862
Galician oil wells, c. 1881
Oil well pumped by horse power in Romania, 1896
Workover
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The term workover is used to refer to any kind of oil well intervention involving invasive techniques, such as wireline, coiled tubing or snubbing. More specifically, a workover refers to the expensiv
Workover rig doing a snub job
