See Directional Drilling.
n: deviation of the borehole from vertical so that the borehole penetrates a productive formation in a manner parallel to the formation.
The newer and developing technology that makes it possible to drill a well from the surface, vertically down to a certain level, and then to turn at a right angle, and continue drilling horizontally within a specified reservoir, or an interval of a reservoir.
A drilling operation in which a portion of the well is drilled horizontally within a productive or potentially productive formation. This operation typically yields a well that has the ability to produce higher volumes than a vertical well drilled in the same formation. A horizontal well is designed to replace multiple vertical wells, resulting in lower capital expenditures for draining like acreage and limiting surface disruption.
A well which is not vertically drilled as defined in Statewide Rule 86.
The technique for cutting a hole in geological strata in a horizontal, rather than the normal vertical, direction.
Drilling horizontally through a reservoir to increase the exposure of the formation to the well.
a subset of directional drilling in which the angle of deviation of the wellbore reaches at least 80 degrees from the vertical, maximizing the length of wellbore exposed to the formation.
A special drilling technique used in drilling the horizontal component of a wellbore.
drilling a well at a 90-degree angle instead of vertically. The well is drilled straight to a specific depth and then is gradually curved. Horizontal wells are advantageous for numerous reasons: to maximize production rates through increased reservoir exposure; to avoid sensitive environmental areas; to avoid a surface obstruction; or to drill several wells from a single location (i.e. offshore platform). Directional drilling refers to non vertical wells drilled at less than a 90-degree angle.