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7th Middle East Geosciences Conference and Exhibition
Manama, Bahrain
March 27-29, 2006
Model
and New Correlation for Middle East Carbonates
PEDEC, PEDEC Company, N.8 (Second Floor)- Sabzeh Alley - Vahidieh street, Tehran 16446
Iran, phone: +98-9122577003, fax: +16036888135, [email protected]
Objectives: The new tools are presented in this article to evaluation of Middle East carbonate oil reservoirs. The method is
the Integrated Recovery Model
and consists of an integrated
model
for predicting recovery from a field. Also, a correlation
based on the data from Middle East reservoirs is presented.
Procedures: In this article the reservoirs are classified to predict the recovery factor in each group. The criteria for the field
selection are: field size, reservoir type, geological age, geographic distribution and quantity and quality of the data collected.
Most reservoirs in the study contain more than 75% of the data elements of the study. The integrated model
uses a new
concept called the “Recovery Index” which is tested against additional field data not used in the
model
development. This
concept combines the effect of many parameters (all of which could be an influence on recovery factor) into a single
predictive term. The
model
requires factors including reservoir rock properties, fluid properties, reservoir architecture,
geology and reservoir energy.
Results and conclusions:
- This
model
can predict the recovery of carbonate reservoir in the range of 5% variation.
- The factors affecting recovery in carbonate oil fields are considered and evaluated.
- The
model
presented can predict the recovery of fields in the range of 10 to 55% or more.
- The examined field shows the
model
prediction is acceptable in new fields of Middle East.
- Using the correlation presented allows a quick estimation of the recovery in the study fields.