GREY:STPJF - Post by User
Comment by
deductionon Nov 22, 2013 11:34am
378 Views
Post# 21931576
RE:RE:RE:RE:RE:RE:RE:Price
RE:RE:RE:RE:RE:RE:RE:Price
With regards to "more even" the standard in the SAGD world is to drill the injector and producer parallel to each other to give the best chance of even conformance. The problem with this is that the reservoir is not a parallel package from top to bottom but rather thickens towards the toe in STP's case. If you drilled them parallel you would leave reserves behind under the producer. What they did was drill one pad on purpose with a horizontal injector at the top and a dipping producer to try and maximize reserve recovery. I don't think anyone in industry has done this so it was a bit of pioneer thing to try (and thankfully only did it on on pad not both).
I'm not sure if we can write these wells off yet - It could just mean they take a lot longer to get conformance. How long no one knows since this is a first. There is no other fix other to drill a new producer. One thing they could do is drill a new well inbetween the two existing (industry calls this a wedge well). In the future they will drill them parallel I'm sure. They can also change the orinentation to deal with the dip issue vs reserves. I hope this helps.
Deduction