|Publisher||International Petroleum Technology Conference||Language||English|
|Content Type||Conference Paper|
|Title||Assessing Fluid Migration and Quantifying Remaining Oil Saturation in a Mature Carbonate Reservoir: Dukhan Arab D|
Levin Barrios Vera, Qatar Petroleum, SPE, Tajjul Ariffin, Qatar Petroleum, SPE, Ali Trabelsi, Qatar Petroleum, Ibrahim Al-Qarshubi, Qatar Petroleum, Hussain Abdulla Al-Ansi, Qatar Petroleum, SPE
International Petroleum Technology Conference, 7-9 December 2009, Doha, Qatar
2009, International Petroleum Technology Conference
|6 Reservoir Description and Dynamics
6.4 Primary and Enhanced Recovery Processes
6.7 Reserves Evaluation
It is believed that differential depletion resulted in considerable fluid migration across sector boundaries. Therefore, it has introduced uncertainty in quantifying the remaining oil in place, recovery efficiency and reserves.
This paper describes the use of conventional material balance and volumetric techniques to investigate the reservoir behavior in order to shed light on fluid migration, the current oil in place and recovery efficiency, as well as identifying limitations and uncertainties. Material balance and fluid migration results indicated new scenarios for oil and water migration between the two southern sectors. The technique has proven to be valuable in understanding a complex reservoir engineering problem.
In order to better understand the migration process and to complement and
validate the results of the material balance, and support the numerical
simulation study, a data collection programme was carried out by drilling wells
and low invasion cores in partially swept zones of the reservoir. The cores are
used to determine remaining oil saturation (ROS), residual oil saturation
(Sorw), wettability and relative permeability (SCAL) data. The preliminary
results of this programme are presented in this paper.
The first part of this paper describes this analysis which was performed in stages as follows:
|File Size||645 KB||9|