Characterization of Primary and Secondary Recovery Processes in an Oil Reservoir: Theoretical Assumptions and Experimental Limitations
Part 17
1. To what extent, the performance of water flood will get impacted resulting from (a) the quantum of natural gas that remains dissolved in reservoir oil (GOR)? (b) the ratio between viscosity of oil and the volume of dissolved gas; and (c) the number of hydrocarbon pore volumes injected water that remains flowing through the reservoir?
2. To what extent, oil recovery by spontaneous imbibition gets increased with reference to the oil recovery by water flooding – upon decreasing salinity of the injected fluid (low salinity water flooding)?
To what extent, the brine salinity is required to be decreased from its original value (say, from 30,000 ppm)?
How exactly, to quantify the physics of wettability alteration to an enhanced water wettability state – upon reducing the salinity of the injected brine – that essentially improves the oil recovery?
3. Can we successfully apply four-dimensional seismic data analysis (which aids to monitor reservoir production processes in a volumetric sense – towards optimal reservoir management), (a) if the reservoir rock remains to be only slightly compressible having low porosity? (b) if the reservoir fluid properties fail to exhibit a significant compressibility contrast in the absence of having only insignificant saturation changes over time between the monitor surveys? and (c) if the results include significant false anomalies resulting from time-lapse seismic acquisition and processing?
Suresh Kumar Govindarajan
https://home.iitm.ac.in/gskumar/
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