BuildCraft version: 7.99.17
Forge version: 8.0.99.99
Link to crash report or log:
Singleplayer or multiplayer: both
Steps to reproduce: find a oil well close to a tree
Additional information:

Image with example:

I think that the oil blocks of the dendrites should appear on the floor, as dendrites naturally form as a consequence of pressure from too much fluid on the same location (the center).

Duplicate of #4002

...right.