WellBore Azimuth North Reference

Products	Versions
TIBCO OpenSpirit Adapter for Petrel	29.0.0

Description

If you are having issues with loading a well into Petrel due to an invalid azimuth value the Petrel Message log will display the error msg shown below:
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“Can not handle azimuth north references other than true north and grid north: for borehole XXXX
To assume an azimuth north reference of Grid or True for null select the option in OpenSpirit settings.
canconvertAzimuth flag is set to be False.”

Transaction completed for WellBore in 0.03 s.
0 wellbores imported of 1
OnEventReceived Done :=: Date TimeStamp

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To assume an azimuth north reference, select the option “If missing azimuth north reference” in OpenSpirit settings>General tab, and select either “Grid North” or “True North”

Issue/Introduction

In a Petrel workflow, an azimuth north reference is required to properly position a wellbore location. This article explains how to verify if the well coordinates are missing the azimuth north reference and if so how to correct the issue.

Environment

Windows‌

Resolution

To enable an azimuth reference, please follow the procedure below:

Step 1) Launch Petrel, open a project, and select the “Input/Output” tab.

Step 2) Click on the Settings option in the OpenSpirit dropdown menu as shown below:

By clicking on the Settings option in the OpenSpirit dropdown menu, 4 settings tabs are displayed:

Step 3) Select the “General” tab.

Step 4) The General tab will display options as shown in the snapshot below:

Ensure that you have checked "If missing azimuth north reference" and select either the “Grid” or the “True North” option

NOTE: If missing azimuth north reference:
If this checkbox is not checked (the default) then wellbores that are missing an azimuth north reference for their deviation survey will not be imported. If checked then a missing north reference will be assumed to be either true north (line of longitude) or grid north (line of constant false Easting) based on the radio button choice.

Additionally, you can verify the status of the azimuth reference by viewing the “Azimuth North Type”, from the data selector, as explained below:

Additional Information

TIB_os-toap_29.0.0_userguide.pdf (downloaded from e-delivery along with .exe)

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