RE: Question regarding the drilling.12 May 2021 10:35
Seagullsfan, Dai2belts
My two cents below.
- the total drill program looks at derisking and confirming the prospecting method and the different potential He traps (1), and to declare discovery (2). So a discovery in one type of trap would derisk and improve CoS of that particular type of trapping mechanism. But until the drill bit confirm He presence, no discovery will be declared.
- For Tai prospect, this is targeting stacked prospects in Upper Karoo and Lower Permian. [2 according to @seisprocessor from his review. Trek mentioned potentially multi >3. is there a document link i can review? cant seem to find it this morning]. In this scenario, the drill bit would target one prospect first, gather data, plug and sidetrack to the next target (from the same pad and main bore).
- therefore likely each drilling program may see more than 1 resource / discovery being confirmed.
Will they continue drilling program in the same section if they hit discovery on the first prospect?
- likely if the next target has different trap mechanism to derisk a new class of reservoir-trap system
- or if the same trap mechanism as discovery, then to chase discovery volumes.
Other notes on Tai while I was looking around:
-Tai is within the Rukwa project area, seems to traverse two license block:
- PL 10713/2015 Rent paid until 17 September 2020 (2021 rent due in December 2020) . PL 10712/2015 Rent paid until 17 September 2020 (2021 rent due in December 2020)
- Ivuna 1 is closest historical well drilled using coarse 2D seismic vintage, circa 10km NW of Tai prospect, drilled by an Amoco led Joint Venture in 1987 to test for hydrocarbons in the Rukwa project area. drilled to a depth of 2,318 m. No significant hydrocarbon shows were reported, and the wells were plugged and abandoned (P&A). log suite from the well provided valuable information about the geology and stratigraphic control. Worth to mention that Itumbula He-N2 spring lies ~15km SE of Tai prospect
-[based on OLD data] Targeting (recoverable, mid case) 1.74 bcf of 138 bcf (unrisked) of He (source page 31, SRK CPR. These numbers are superseeded - larger than initially thought of, following completion of 2D infill work).
- [based on recent 2D infill] Currently Tai is expected to be larger than the initial main targets of Kasuku [ 111.39 bcf unrisked] and Itumbula [14.52 bcf unrisked]
HE1 has now completed the infill so i expect CoS has improved to an extent. the drill bit will unlock and give us certainty.
Seagullsfan
on seismic, a simple analogue would be to take a piece of A4 paper, assume thats the exploration rights area. the seismic line is merely (akin to) taking a pen and making a line (or two or 3 or more) on the paper (the total length of the lines your draw is the 200 km line). you can make a lot of lines, criss crossing, diferent parts etc. the higher the intensity of those lines, the better the subsurface imaging. Hope this helps
DYOR
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