Snohvit C02 Tubaen Fm. storage capacity and inj«ction strategy study
Valid from
Rev. no. 1.0
An example of a wide channel is shown in Figurę 21, from the lowermost part of Tubaen Fm. The high amplitudes could be interpreted as a channel showing differential compaction. This could indicate that the higher amplitudes reflect sand-rich facies in that interval. Weil logs (7120/6-1 & 7121 /4-F-2-H) show in this interval Iow gamma ray values (Figurę 22), i.e. Iow shale content and coincide with the high amplitudes. The shallower sections in the Tubaen Fm do not reveal such elear channel forms. It might be possible to work out a correlation between amplitudes and facies in the shallower Tubaen Fm intervals, but this requires morę work. Channel forms can also be distinguished by using frequency decomposition techniques as illustrated in Figurę 24 and Figurę 25.
Recommended futurę work include producing attribute maps which reflect facies distribution for all Tubaen Fm intervals. These data should then be exported into RMS and conditioned to the log and core data in order to produce a geomodel which is conditioned on log, core and seismic data.
Classification: Intemal Status: Draft Expiry datę: 2012-12-31 Page 31 of 132