A horizontal well is a directional well, usually exceeding 80° of departure from vertical, which is designed and steered to maximize the productive interval of exposure in the wellbore. The horizontal [[Lateral|lateral(s)]] can go beyond true 90° horizontal and actually drill upward. | A horizontal well is a directional well, usually exceeding 80° of departure from vertical, which is designed and steered to maximize the productive interval of exposure in the wellbore. The horizontal [[Lateral|lateral(s)]] can go beyond true 90° horizontal and actually drill upward. |