RE: Balcombe next...29 Apr 2019 12:25
B2HS2L - Post from 4th March 2019
“Scallywag - to be fair to Angus if the water zone is right at the very bottom of the well then the Ultrawave Tool sensors would not have logged this section due to the sensor offset (distance from the drill bit back to where the tool is positioned in the drilling assembly....may be 30-80ft behind.”
I would say due to the profile / angle of the well that the water zone is at the very bottom of the perforations (deepest part of the well), as that tends to be the case as Oil and Gas is lighter than water. In simplistic terms all you need to do is run a bridge plug and squeeze some cement.
You don't run your liner to the very bottom (normally 15ft above the TD depth), so I would say with regards to the 200m of perforations, you would only lose circa 5-10m.