Petroleum engineering

The classification of drive mechanisms

The classification of drive mechanisms

MATERIAL AND METHODS

MATERIAL AND METHODS

• The comprehensive analysis of results of sensitivity studies for a number of producing gas
• condensate reservoirs which are under bottom water drive mechanism was done and the effects of production and reservoir factors on recovery and production behaviors of a gas condensate
• reservoirs are explained as follows.

RESULTS AND DISCUSSION
Completion length
Water-drive gas systems are economically important but gas recovery may be limited by water
loading of the production string or incomplete sweep in the reservoir. Efforts to improve recovery
from water-drive gas wells have focused on limiting the completion length.
Aquifer size
Aquifer determines the amount of reservoir energy that can be provided by water influx (2018). In general, simulated production results for different aquifer sizes tells us that oil and gas recoveries increases with increasing aquifer size.
Gas production rate
Production rate is also one among the apparent key considerations in a depletion scheme of a reservoir underlain by an active water drive because of the potential water coning that may affect the ultimate recovery. Water coning in a bottom water driven gas reservoir is a complex phenomenon that meritsm careful attention.

• In this study, fine grid radial simulation model (figure 02) has to be constructed, calibrated and performing convergence test. Radial model is selected for this purpose because in radial model, grid blocks are finer near the wellbore and increase with distance and it is suitable for understanding condensate dropout and water coning (Ali 2014). Once the benchmarked radial simulation model is achieved, sensitivity studies are performed to investigate the effects of depletion scheme and reservoir property parameters on the ultimate recoveries.