Try this one: 16888
"Porosity alone will not do it, unless you have interconnected porosity, i.e. permeability...
High permeability is almost always caused by extensive fractures. This was a part of the problem at Mesa. After finding a drilling break, porosity, we drilled through some very fractured rock (the drill bit was hopping severely, and we never got circulation back). We dry drilled for about ten feet, but almost got stuck, and had to quite drilling. This is where we TD'ed the hole. We now must test what we have got for the final answers"
