RE:RE:RE:RE:RE:RE:RE:RE:RE:Why only drilled to 6, 858 feet down?Hmmm ... the drilling of a STRAT TEST ... is to TEST THE STRATIGRAPHY; that is, to test all of the physical characteristics of the layers through which one is drilling.
In petroleum work, those characteristics are those of the Petroleum System. The Petroluem System comprises the layers of rock --- that is, the stratigraphic rock layers, often 100's of feet or meters in thickness -- whose components contribute to the presence of petroleum.
Note: not all basins have ACTIVE petroleum systems that are capable of expulsing, into geological petroleum traps, commercial volumes of petroleum; however, with my understanding, in this basin, the petrophysicists, rock chemists and etc have already determined that there is an active petroleum system in this region.
Not to get too deep into the weeds, but, the strat tests hope to COLLECT HARD DATA in order to evaluate whether the penetrated rock layers provide evidence of the presence of [a] petroleum source rock ... from which the oil could be derived; reservoir rock, with good porosity and perm from which the petroleum could be produced at good commercial rates and volumes; [c] cap rocks, which overlay the reservoir rocks, which can trap/hold the petroleum in a commercial pool; and [d] whether the geologic sequence of events --- typically, of durations greater than MILLIONS OF YEARS --- ocurred in a timely manner. [This question of geological timing is often the most difficult to evaluate properly; where, consequently, it is inherently of the highest grade of uncertainty.]
There is much more too it, but, I won't get into that here and now.
In the meantime, do not confuse Strat Test --- a drilling technique --- with a Strat trap --- which is a pool of petroleum, trapped by barriers caused by stratigraphic changes of the reservoir rock; that is, generally a barrier resulting from the change in the porosity and permeability. THESE ARE TOTALLY UNRELATED SUBJECTS.
I would suggest, that, IF stratigraphic traps are not mentioned, as specific targets of the current RECAF efforts --- they may be ... but I don't know --- that we investors not ignore their possibilities, but, not to be too concerned with them.
Strat traps, as opposed to the conventional structural traps, typically, are much more subtle and much more difficult to predict ahead of the bit. For this reason, in 1st-pass exploration efforts, such as what RECAF is doing here in Africa, most likely, their PRIMARY and only focus is on structural trap drilling targets.
Some one please correct me if I am wrong on this; that is, if RECAF has been talking about going directly after strat traps.
Hope that this helps. Let me know.