Good morning, Bob.
<<Is this feasible?>>
In theory, yes, very definitely.
Unfortunately, in practice, the answer is not quite that simple and straight forward.
At ELH we are dealing with very high pressured and extremely permeable reservoirs. This is NOT the type of zone I'd like to perforate with a casing gun !!! My preference would certainly be to use a tubing conveyed gun such as the one employed at BKP#1.
If one uses such a gun, it would be landed down in the smaller diameter lowermost casing. Presumably, the packer could be landed in either casing string.
Now, after firing the gun, what would be in that lower casing ?? The tubing conveyed gun !!! That's no problem IF there is plenty of overhole. In such case it could simple be cut it off and allowed to drop to the bottom of the sump. Then the situation you visualize would exist. BUT, in a well like BKP#2 (where lost circulation and gas kicks are problematic) there may not be sufficient overhole and cutting off the gun may not be viable.
Once perforated with a tubing conveyed gun, I would not want to have to kill the well, trip out the tubing, packer, and expended gun and then rerun the production string and packer. So, if perforated with a tubing conveyed gun, I'd leave it there if I could not cut and drop it.
In addition, in a well that produces liquid(s) you may actually want to complete your well with your tailpipe landed below the lowermost perforations. This aids liquid removal and minimizes the amount of fluid which can enter the perforated sands each time the well is shut in.
At the moment, it is premature to "design" the actual completion. Much more data is required.
Bob, I trust that you are making use of those golf courses, too !! <gg>
Have a good one.
Later,
grayhairs
P.S.-- I wonder if there'll be a "candle" at BKP#3 in the next few hours\days. <gg> |
