The Application of hydrochemical data in hydrodynamic study of Asmari reservoir, Karanj oil field


Faculty of Earth Sciences, Shahid Chamran University, Ahvaz, Iran


Hydrodynamics is the most important factor of transport mechanism in hydrocarbon fluid. To analyze the hydrochemical data, the Piper and Composition diagrams were used. Hydrochemical data indicating the Cl-Na type for reservoir showed mixing process with the water coming from different discharge sources to the field aquifer. It also indicated there was a weak hydrodynamic flow. Entering water with less TDS did not reduce significantly the total field  of TDI. With the passingof time, water pressure in the drilled wells under study, like oil, is reduced. Moreover, it presents the best correlation between wells 7 and 14. Generally, the production index and pressure data indicated a suitable condition in the southern half of the field. The results also indicated that the aquifer potentiometric surface was tilted. Hydrodynamic model shows two regions with high hydraulic head near wells 4 and 5. From this point, the fluid refluxes towards other parts. Therefore, water expansion and over pressure are thought to be  factors affecting the hydrodynamic pattern.


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