Oil Rigs

[captain2]

Why do I have three oil rigs without names and cannot be used although when you put the cursor over them they tell you their names

[Nordic Dragon]

Probably becaue you do not have some sort of industry tag enabled. Look under options in game to enable them.

[FooBar]

Please post a savegame if the advice above doesn't work.
EDIT: no, don't. Since you play TT(D) there's not way you can have messed it up with some NewGRF of sorts, so the above should work

[captain2]

Thank you for that advice but as I already have 2 oil rigs that do work I was more concerned because the other three without names on them,do not

[PikkaBird]

If you have exhausted the number of stations (either in the town, or in the map as a whole), the oil rig's inbuilt station will not be created. This is a TTD bug.

You can still access the resources of the oil rig by building a station with the oil rig in its catchment, like any other industry.

And why not?