hawr-uh-zon-tl well Used when reservoir permeability is low or hydrocarbons are being produced from vertical fractures in rock.

The drilling of a well that deviates from the vertical and travels horizontally through a producing layer.

Most Bakken wells are drilled vertically for several thousand feet. The drill bit is then diverted until it is moving horizontally within the upper and lower boundaries of the Bakken formation and con [..]

Unlike a vertically-drilled well, which penetrates small thickness of the reservoir of interest for production, in the case of horizontal wells the reservoirs of interest are penetrated on a horizonta [..]