Buildcraft version: 7.99.7
Forge version: 13.20.1.2476
Link to crashreport or log (on pastebin or gist, please don't put the entire log here) :
Singleplayer/multiplayer: singleplayer

Additional information:
it spawned oil in the nether on seed : 4892394019845594397
and cords : x = -324 z= -69 y = 59
around there should it be

more correct cords and be seen on the pictures at the map

duplicate of #3812