Sanco Swift13 Jan 2020 12:13
Still mulling over the Sanco Swift vessel across 94 and 43.
Image by PCL showing regional oil seeps.
A huge cluster are located in and around PEL 37 which makes sense in that the oil play was subsequently proven with the drill bit.
J, you posted a few days ago how the shallow water zones have variant but often thin shales acting as the seal which gain in thickness as you head further offshore, this goes along way to explaining the failure at Cormorant. I think there is strong evidence the seal eventually failed due to the build up of pressure as it was too thin (PCL - wet gas signatures were found within this shale and throughout the target reservoir) perhaps it would go some way to explaining an abundance of oil seeps in that location, but they do disappear up dip.
Interestingly we can see the oil seeps are missing on PEL 94 and Oranto’s PEL 43 which the Sanco Swift ran across yet both surely must have read across to PEL30 & 37 plus a possible integrated plumbing system (thief zones, conduits, enclosed sand channels) linking all licences with regards to up dip lateral migration?
To the east side of the fault, up dip to Cormorant on PEL 94 the board state “Strong evidence of an excellent lateral seal 4km to the west of the Marula lead”.
https://pancon.com.au/wp-content/uploads/2018/01/Pan_0008-2.jpg
I think on PEL 94 we have to divide the licence into 4 like a busy highway, above and below a possible regional seal and also an east and west of a very large fault. 94 was previously divided up.
http://www.nabirm.com/wp-content/uploads/2011/10/License_map2012_Final-Model-1.jpg
Above the regional seal to the east of the fault links the proven and on trend play by Cormorant proving the sands where for example the new Marula lead pinches out onto the Welwitschia structure itself appearing to link with the evidence of a lateral seal 4km away mentioned above.
Below the regional seal on the eastern side sits ‘reservoir 1B deep water sands in a structural trap’ and we await further info.
Above the regional seal to the west of the fault remains relatively unknown.. are there possibilities of stratigraphic leads pinching against the structure similar to that in the east? The complete mess of that abandoned drill carried out by TRP/Repsol sat on the crest.
Below the regional seal to the west sits Welwitschia deep with additional deep prospects being Gemsbok, Lion and Dik Dik in 29. All 4 being large dip closed structural traps.
Presentation long overdue required GBP!