# 12.13.4 StnTrajCorUsed

Topic Version | 1 | Published | 11/11/2016 | ||

For Standard | WITSML v2.0 | ||||

Type: | Class | Stereotype: | «XSDcomplexType» |

Captures information about corrections applied to a trajectory station.

Name |
Type |
Notes |
---|---|---|

DirSensorOffset |
LengthMeasure |
Offset relative to the bit. |

GravAxialAccelCor |
LinearAccelerationMeasure |
Calculated gravitational field strength correction. |

GravTran1AccelCor |
LinearAccelerationMeasure |
The correction applied to a cross-axial (direction 1) component of the Earth's gravitational field. |

GravTran2AccelCor |
LinearAccelerationMeasure |
The correction applied to a cross-axial (direction 2) component of the Earth's gravitational field. |

MagAxialDrlstrCor |
MagneticFluxDensityMeasure |
Axial magnetic drill string correction. |

MagAxialMSACor |
MagneticFluxDensityMeasure |
Axial magnetic correction due to a multi-station analysis process. |

MagTran1DrlstrCor |
MagneticFluxDensityMeasure |
Cross-axial (direction 1) magnetic correction. |

MagTran1MSACor |
MagneticFluxDensityMeasure |
Cross-axial (direction 1) magnetic correction due to a multi-station analysis process. |

MagTran2DrlstrCor |
MagneticFluxDensityMeasure |
Cross-axial (direction 2) magnetic correction. |

MagTran2MSACor |
MagneticFluxDensityMeasure |
Cross-axial (direction 2) magnetic correction due to a multi-station analysis process. |

SagAziCor |
PlaneAngleMeasure |
Calculated cosag correction to the azimuth. |

SagIncCor |
PlaneAngleMeasure |
Calculated sag correction to the inclination. |

StnGridConUsed |
PlaneAngleMeasure |
The angle used to correct a true north referenced azimuth to a grid north azimuth. WITSML follows the Gauss-Bomford convention in which convergence angles are measured positive clockwise from true north to grid north (or negative in the anti-clockwise direction). To convert a true north referenced azimuth to a grid north azimuth, the convergence angle must be subtracted from true north. If this value is not provided, then GridConUsed applies to all grid-north referenced stations. |

StnMagDeclUsed |
PlaneAngleMeasure |
Magnetic declination used to correct a Magnetic North referenced azimuth to a True North azimuth. Magnetic declination angles are measured positive clockwise from True North to Magnetic North (or negative in the anti-clockwise direction). To convert a Magnetic azimuth to a True North azimuth, the magnetic declination should be added. |

Association |
Notes |
---|---|

From: TrajectoryStation.CorUsed 0..1To: StnTrajCorUsed Association |
Applies only to measured magnetic stations. |