RE: Xavier on FB4 Oct 2020 21:30
He also has been pointing out that there maybe a second possibly contributory oil sand called Karamat. It is present and productive in other neighbouring oil fields and likely at Royston in particular.
Possibly an academic issue but hopefully it might chip in connecting sands to aid productivity.
Seems like a lot of other things working in this area?
“??????????? Time travelling with turbidites #10
The Mid Miocene Karamat sands!
The non-calcareous clays of the Karamat Formation are developed southwards from the crest of the SW-NE trending Barrackpore anticline and a maximum true thickness of 1000ft has been penetrated. In vicinity of the frontal fold, Rock Dome anticline, to the south, the clays are stacked in imbricates attaining thicknesses of more than 5500ft.
The formation ranges from the Globorotalia fohsi robusta at top Cipero Formation to the overlying Globorotalia mayeri zone.
Sandy, channelized 'salt & pepper' Karamat turbidites, sometimes referred to as the Karamat Herreras, occur near the base of this formation and are found oil, gas and condensate bearing in Siparia, Barrackpore, Catshill, Moruga, Balata and Bovallius fields. They are identified via the presence of Jarvisella karamatensis and Eggerella karamatensis Bronnimann. The extent of these sandy turbidites reveal the undulating seabed geometry post Herrera deposition with thick Karamat sand development in footwall synclines.
The Karamat sandstones were encountered in Ortoire Lizard OL-2 & OL-4 wells within the Ortoire Syncline and will be tested along with the traditional Herrera sandstones by Touchstone's upcoming Royston-1 exploration well.
Many thanks to ResiLog for their micropaleontological pictures and guidance on the Karamat turbidites.
Touchstone Exploration Inc.
AAPG Young Professionals Trinidad & Tobago Chapter
AAPG Latin America“