Your mod doesn't work properly, the oil extraction recipe is "hidden"

If you're referring to the "hidden = true" setting, that's intentional. If the recipe were not hidden, it would be available right from the start of the game. The tech is unlocked by its own dedicated technology - Deep Oil Extraction. That has Deep Mine as a prerequisite. Does researching that technology not unlock the recipe?

edit
No, never mind. I mixed the "hidden" tag with the "enabled" tag. My mistake, I'll fix it.

OK, fixed in 1.0.1. No idea what happened there.

One more thing, I would like to extract only oil, but I can't, because I also extract other resources along with oil, why?

I looked in the files and noticed you added everything there, removed all ores and left only oil and it worked ^^

Could you take a look at it and correct it? (for others, because the mod is great but popularity is falling)

Separate mines for oil, separate mines for other ores*
xD

Thanks :)

One more thing, I would like to extract only oil, but I can't, because I also extract other resources along with oil, why?

This is how Deep Mine works. Deep Oil is technically an "Advanced" recipe for Deep Mine, and all of those follow the same pattern: 80% chance for main resource, 20% chance each for Iron Ore, Copper Ore, Coal and Stone. If you want to tweak the percentage chance for those ores, you can do so from the options for the Deep Mine mod. Deep Oil reads directly from the settings of Deep Mine.

As Deep Oil is an extension of Deep Mine, I feel it's important that it stay consistent with the ruleset of Deep Mine. This is not something I want to change presently.

Either way - thanks for the bug report :)