Introduction
This spreadsheet sets out as an example, the calculations for the ISCWSA Error model.
Versions are available for the three ISCWSA test wells.
The calculations have been verified on these wells against diagnostic data provided by Steve Grindrod at Copsegrove Developments
Although an attempt has been made to ensure that the formulation is general, no assumptions should be made as to the validatity of the data on any other well paths or with any other error models
Throughout, the NEV axis is aligned with true north
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