Type of deviated hole at the datum horizon.
The IGS distinguishes 2 types of deviated holes:
Directional Hole |
Refers to the portion of a well bore that is deviated from vertical to penetrate formations at an angle, whether intentionally or inadvertently due to drilling circumstances, to intersect the target formation at a different geographic position. The data field is left blank if the Measured Depth falls in the vertical portion of the borehole.
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Horizontal Hole |
Refers to the portion of well bore that is deviated to penetrate formations more or less horizontally, generally for the purpose of intersecting a petroleum-bearing formation or reservoir along more of its length than would be the case for conventional vertical wells (straight holes).
The data field is left blank if the Measured Depth falls in the vertical portion of the borehole. |
The Deviation Type data field is left blank if the Measured Depth falls in the vertical portion of the borehole.