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Horizontal - Directional Oil & Gas Well Drilling



The "Horizontal Drilling" term is from the general term "directional drilling," used where the departure of the well bore from vertical exceeds about 80 degrees. Note that some horizontal wells are designed such that after reaching true 90-degree horizontal, the well bore may actually start drilling upward. In such cases, the angle past 90 degrees is continued, as in 95 degrees, rather than reporting it as deviation from vertical, which would then be 85 degrees. Because a horizontal well typically penetrates a greater length of the reservoir, it can offer significant production improvement over a vertical well.

Horizontal Directional Oil & Gas Well Drilling



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