My suggestion is to stay away from source that agenda driven folks can easily edit or post as they want.
If you look at some writings on Kola that are focused on geology, you will find it described differently.
http://www.wirelinedrilling.com/sites/default/files/Kozlovsky%20Kola%20Deepest%20Well%20.pdf
Well I admit I have learned a lot today...and abiotic oil seems less and less likely.
The article is fascinating really...says the hole went over 800 meters horizontally off of vertical!
.....and found sedimentary rock at the bottom.