Data Model

Topic Version1Published11/11/2016
For StandardWITSML v2.0

The trajectory data object:

  • Must reference its parent wellbore.
  • Is a growing data object because as measurements are taken (at increased depth) that data is added to the trajectory.
  • Includes a part_TrajectoryStation object to support streaming data with ETP.
  • Has a GrowingStatus, which describes the growing status of the Trajectory (active, inactive or closed)
  • Contains this data:
  • Trajectory stations and measurement data recorded at each.
  • The type of measurement tool used and related information.
  • Trajectory station status, type, and related data for specific types.
  • Directional drilling information and measurements.
  • Calculated values and related uncertainty ranges.
  • References a tool error model, which identifies inaccuracies of instruments or measurement systems related to the trajectory.