Getting to 30,000 bopd on just the 2 Lanc wells7 Mar 2020 12:44
I notice water is starting to get a mention again!
In my opinion - and rather simplifying the maths - taking a 15k bopd rate at a PI (productivity index)of 200 would cause 15,000/200 = 75 pounds per square inch, down the well, pressure drop as a result.
Now 1 pound per square inch pressure drop can lift a column of water just 2.31 feet (0.704metres)
So the ‘suction’ of 75 psi in the wellbore caused by drawing 15kbopd could lift the aquafer water some 75 x 0.704metres = 52.8metres.
So, even if there are good fractures going straight down from the wells to the aquafer, by my ballpark calculations, that amount of water lift is considerably less than the distance from the lowest point of the deepest Lancaster horizontal production well ie. the 7z well, which is 268metres above the oil water contact depth of the aquafer. So, still over 200 metres of separation from the aquafer water, even when 'pulling' 15k bopd from the 7z well - And the 6 well at least as good.
Anyone got any more indepth/accurate calculations they'd like to share?