Found a few tid-bits with googling "extended well test"...

Found a few tid-bits with googling "extended well test" "production facility"

http://www.slb.com/content/services/testing/production_facilities.asp

Early production facilities (EPF) from Schlumberger
help bring new discoveries on stream as fast as
possible to create cash flow and further define
reservoir conditions.

With oil prices at high levels, operators have strong
incentive for early production and its attendant cash flow
while full field development plans are defined and longterm
facilities are built. A bonus comes in getting better
reservoir performance data before installing more
expensive long-term facilities.
Fit-for-purpose EPF can also be

http://www.slb.com/media/services/testing/early_prod_facilities.pdf