Sometimes you just can't find the Borehole Cluster, or another faction was lucky enough to have it within thier territory. Luckily an artificial Borehole Field can be created quite easily, even though the game isn't supposed to allow it.
Q: How do I do it?
A: Easy, first decide on how big you want your field to be. A 3x3 field ( pictured
above ) requires a total of 9 formers, a 4x4 field would require 16 ....and so
on. Your field can be as large as you like provided you have the number of formers
required ( one for each borehole ). Then, position the formers and one at a time,
execute the CONSTRUCT THERMAL BOREHOLE command. Provided
that you begin construction all at once, the system will allow you to drill holes
next to each other no matter how many are touching. Don't worry if you have to
wait a turn or two to activate all of them, as long as the adjacent one hasn't finished
yet, you can begin drilling the next one, and the next, and the next....allowing
you to construct a field of infinate size! *Example
of a 8 x7 field
The problem is that when you access the riches they generate, the ecological damage
created by them is also attributed to the base that convoys the resources, so
be certain to build Tree Farms / Hybrid
Forests and Centauri Presrves in those
bases beforehand to offset the resulting ecological damage.