Formation Evaluation in Lower Eocene Reservoirs in Upper Assam Basin: An 
Integrated Approach

Borah, N.M.; Mallick, Rishav; Choudhuri, Biswajit; Raju, S.V.; Mathur, Neeraj

doi:10.2523/39540-ms

Cited by 5 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This problem can be partially resolved by changing the matrix convention used to calculate the porosity logs from limestone scale (2.7 g/cm 3 ) to actual matrix scale (2.55 g/cm 3 ). In general, for oil-bearing zones the crossover magnitude is less than 3 porosity units in the actual matrix scale, compared with more than 6 porosity units on the limestone scale, with crossover being greater than six for gas-bearing zones in the actual matrix scale (Borah et al, 1998). Dipole sonic logs from well B show little difference between fast and slow shear waves, suggesting small azimuthal anisotropy at this location.…”

Section: Log Analysismentioning

confidence: 86%

Well log and synthetic seismogram analysis of an oilfield in Assam, India: A 3C seismic development feasibility study

Stewart

Quijada

Mandal

et al. 2008

SEG Technical Program Expanded Abstracts 2008

View full text Add to dashboard Cite

Well logs from several fields in Assam, India were analyzed to determine the feasibility of a 3-C seismic development study. One of the challenges in the area is to identify sand-rich regions (potential reservoir zones) within a structural geologic setting. We find that representative reservoir sands have an identifiable response; in particular, higher S-wave velocities compared to their surrounding sediments. Synthetic seismograms generated from the logs suggest that these reservoir sands may be detectable with PP and PS seismic techniques.

show abstract

Section: Log Analysismentioning

confidence: 86%