Garpal Gumnut
Ross Island Hotel
- Joined
- 2 January 2006
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L44-H Appraisal Well
The L44-H well is located in the central lobe of the Na Sanun East (“NSE”) oil field,
approximately 3.25 kilometres north of the producing NS3-D1 well.
Well testing is continuing and a stable rate of 1,265 bbls/day has been achieved. The oil
is good quality at 35 degree API. A small amount of water is being produced varying
from 0.7% to 1.2% as the well continues to clean up and unloads the remainder of the
drilling fluids lost into the reservoir while drilling (“lost circulation”).
The well is free flowing on choke settings of 8/64 inch on the annulus and 17/64 inch on
the tubing. Flowing casing head pressure is 220 psi and flowing tubing head pressure is
280 psi indicating the well may be capable of oil production at even higher rates.
L44-H penetrated the top 14.5 meters of the target volcanic reservoir interval at a depth
of approximately 866 meters. Lost circulation (an indicator of good quality, fractured
reservoir) was encountered at three levels with total drilling fluid losses of more than
1,100 barrels. Electric logs indicated the best volcanic reservoir section yet encountered
in any well over the entire 14.5 meter thick volcanic interval. This has been confirmed by
the excellent oil flow rate.
Nice
Can somebody explain the significance lost circulation and fractured resevoir in the above report as I'm not up to speed on oil reports
Garpal