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. |