19.5.5 Test Cases

The MWD paper [1] defines three standard test well profiles. These are for:
a. an example North Sea extended reach well,
b. a Gulf of Mexico fish-hook well,
c. a Bass Strait designer well.

For each test case the well profile, location, magnitude and direction of the Earth’s magnetic field and the units (m or ft) are defined.

The MWD paper then defines seven test cases and error model results for each test case at Revision 0. The gyro paper defines six gyro models and applies each model to the same three test well profiles. The gyro paper also defines acceptance criteria as having numerical agreement to within ±1% of the results in the paper.