I dont know much about drilling, but one thing i have noticed in the report is the depth intervals the drill bit are POOH changed at. They changed 2 drill bits in the first 2300m of drilling, than ignoring the change bit at 2589m for wirelogging duration, the next drill bit only lasted approx 100m 2600-2700, and now another drill bit change so it only lasted approx 340m 2700-3038.
Could this indicate the geology was very "hard" at 2600-2700? As well as the general trend downward in the clanmyer and nullara layer also "hard" relatively to top layers, is this a good thing? Does any of this help with "capping" the reservoir?
The other thing that got me puzzled is the elevated gas reading in the interbedded limestone, etc stone. Where could this gas have come from? I just would like someone to confirm if this gas came from within the layer or was forced upwards by "overpressure" in the layer beneth.
valentine update, page-7
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