تقييم الجودة المكمنية لتكوين المشرف في حقل الفيحاء النفطي

Zuhoor J. Alani

doi:10.52716/jprs.v14i1.730

Authors

Zuhoor J. Alani Basra University of Oil and Gas

DOI:

https://doi.org/10.52716/jprs.v14i1.730

Keywords:

Well log, Petrophysical properties, Mishrif Formation, Faihaa Field, Techlog.

Abstract

Two wells are selected in the Faihaa field (FH-1 and FH-2) to study the petrophysical properties and evaluate the reservoir units of the Mishrif Formation. The cross plots of density-neutron and M-N show that the Mishrif Formation consisting mainly of limestone with calcite as the main mineral with the presence of dolomite in very few percentages and points within the range of secondary porosity and gas. Petrophysical properties were determined and plotted as computer processing interpretation (CPI) such as shale volume, porosity, water saturation, and hydrocarbon saturation by using Techlog software and showing that FH-2 has a good petrophysical property than FH-1. The main reservoir units in both wells are MA, MB, MC, MD and ME. The MD unit considered as the best reservoir unit with good of reservoir quality compared to the rest of the units due to good porosity values and low values of shale volume and water saturation. each of the MB and MC units has a good reservoir quality in FH-2 and the lowest reservoir quality in FH-1, while both the MA and ME units consider the weakest units that have poor reservoir quality, especially the MA unit which has a few thicknesses with high shale volume values.

References

S. Z. Jassim, and J. C. Goff, “Geology of Iraq”, Dolin-Prague and Moravian museum, Brno, pp. 341, 2006.

A. M. Aqrawi, J. C. Goff, A. D. Horbury and F. N. Sadooni, “The Petroleum Geology of Iraq”, Scientific Press, Beaconsfield, UK, p. 424, 2010.

M. Al-Hassani, S. Al-Dulaimi, “Biostratigraphy of Yamama Formation in Faihaa Oil Field, Southern Iraq”, Iraqi Journal of Science, vol. 62, no. 5, pp: 1570-1586, 2021. https://doi.org/10.24996/ijs.2021.62.5.20

Hiba A. Kareem, Manal Sh. Al-Kubaisi, and Ghazi H. Alshar'a, “Structural study of Faihaa Oil Field in Basra South of Iraq”, The Iraqi Geological Journal, vol. 54, no. 2F, 2021. https://doi.org/10.46717/igj.54.2F.6ms-2021-12-23

A. Lazim, H. F. Khazaal, and M. A. Swadi, “Characterization of Structural Geology of Faihaa Oilfield, Southern Iraq”, Journal of Petroleum Research and Studies, vol. 12, no. 3, pp. 1-20, Sep. 2022. https://doi.org/10.52716/jprs.v12i3.546

United Energy Group Limited, Complete Person's report on the Oil, Gas and Condensate Assets of Kuwait Energy plc, Published report, 2018.

Schlumberger, Log interpretation principles/ Applications, Schlumberger Wireline & Testing, 1998.

Schlumberger, Log Interpretation, II-Applications, New York, 1974.

A. Dresser, Log Interpretation Charts, Dresser Industries, Houston, 1979.

D. Tiab, and E. C. Donaldson, “Petrophysics: Theory and Practice of Measuring Reservoir Rock and Fluid Transport Properties”, Fourth Ed, Gulf professional publishing, 2015.

M. R. J. Wyllie, A. R. Gregory, and G. H. F. Gardner, “An experimental investigation of factors affecting elastic wave velocities in porous media”, Geophysics, vol. 23, no. 3, pp. 459–493, 1958. https://doi.org/10.1190/1.1438493

G.E. Archie, "The Electrical Resistivity Log as an Aid in Determining Some Reservoir Characteristics", Transactions of the AIME, vol. 146, no. 1, pp. 54-62, 1942. https://doi.org/10.2118/942054-G

C. Bardon & B. Pied, "Formation Water Saturation in Shaly Sands", Paper presented at the SPWLA 10th Annual Logging Symposium, Houston, Texas, May 1969.