Collar on Surface

Check for collar location relative to a surface

This option compares the elevation of a drillhole collar against a selected grid or triangulation surface. Typically the surface would represent topography, but in the case of inpit or underground drilling, the surface could represent a seam floor.

Override database synonyms

Select this check box to specify the exact database field (column) used in the collar check.

Vertical Tolerance

If required, enter an optional Vertical tolerance value. Deviations greater than this tolerance (+ve or –ve) will be reported as errors.

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Related topics

• Validation Specifications
• Select Database
• Collar Checks
  • Unique Collar Location
  • Collar on Surface
• Downhole Checks
  • Empty Table
  • Total Depth
  • Overlapping Intervals
  • Increasing and Decreasing
  • Maximum variation
  • Unique Values
  • Sequence
  • Derived Value
• Along Record Checks
  • Field Sum
• Individual Field Checks
  • Minimum and Maximum Values
  • Translations
  • Case Of
  • Mandatory
  • Expression
• Report
• Save and Run