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| isbn = 0891816658
| isbn = 0891816658
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In the context of [[horizontal well]]s, an additional wellbore drilled away from an original vertical or horizontal wellbore is a sidetrack. A sidetracking operation may be done intentionally or may occur accidentally. A [[multilateral well|multilateral]] or [[multilevel well]] will have multiple intentional sidetracks drilled to provide multiple productive [[lateral]]s.
In the context of [[horizontal well]]s, an additional wellbore drilled away from an original vertical or horizontal wellbore is a sidetrack. A sidetracking operation may be done intentionally or may occur accidentally. A [[multilateral well|multilateral]] or [[multilevel well]] will have multiple intentional sidetracks drilled to provide multiple productive [[lateral]]s.
[[file:Mth14ch00f01.jpg|thumb|center|300px|Simple vertical profile of a horizontal well, illustrating basic terms.]]
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==See also==
==See also==