Sensitivity analysis to investigate possibility of steam injection in an Iranian carbonate heavy oil field

A. Haghshenas, Mahmood Amani

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Steam injection in naturally fractured heavy oil reservoirs provides an extremely challenging problem as well as a potentially effective and efficient improved oil recovery method. Coupling of the two distinct and contrasting matrix and fracture systems results in a highly non-linear problem, and it gets even more complicated as a result of steep changes in fluid properties due to the thermal effects of steam injection. Modeling and designing an optimum steam injection operation in such systems requires an accurate characterization and representation of a naturally fractured heavy oil reservoir and steam injection operation parameters and dynamics. Kuh-e-Mond is one of Iranian Fractured heavy oil fields. This field is not developed yet. The °API of oil in this field is very low (7.24 °API) and the viscosity is very high (1758 cp) so thermal recovery methods are concerned for this case to reduce the viscosity. A thermal dual-porosity model is developed for a sector of this field and some sensitive analysis tests were performed. A comprehensive study is conducted in order to understand the relative effects of naturally fractured heavy oil system and injection operation properties on the oil recovery performance. The initial pressure in this field is low (927 psi), so pressure maintenance has been considered as a dominant factors in this study; simulation was undertaken using STARS software. This work shows that steam injection could improve oil recovery from zero up to 17% so this scenario can be a good applicant for this field. Results indicate the importance of grid block size, injection rates, temperature and quality of injections on the simulation process. This should help us better understand design optimum recovery operation, pressure maintenance and determine range of confidence for an oil recovery operation in this heavy oil field using steam injection.

Original languageEnglish
Title of host publication15th European Symposium on Improved Oil Recovery 2009
Pages743-759
Number of pages17
Publication statusPublished - 2009
Externally publishedYes
Event15th European Symposium on Improved Oil Recovery 2009 - Paris, France
Duration: 27 Apr 200929 Apr 2009

Other

Other15th European Symposium on Improved Oil Recovery 2009
CountryFrance
CityParis
Period27/4/0929/4/09

Fingerprint

steam injection
Oil fields
heavy oil
oil field
Sensitivity analysis
sensitivity analysis
Carbonates
Steam
Crude oil
carbonate
Recovery
oil
recovery method
Petroleum reservoirs
Application programming interfaces (API)
viscosity
Viscosity
dual porosity
temperature effect
Thermal effects

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology

Cite this

Haghshenas, A., & Amani, M. (2009). Sensitivity analysis to investigate possibility of steam injection in an Iranian carbonate heavy oil field. In 15th European Symposium on Improved Oil Recovery 2009 (pp. 743-759)

Sensitivity analysis to investigate possibility of steam injection in an Iranian carbonate heavy oil field. / Haghshenas, A.; Amani, Mahmood.

15th European Symposium on Improved Oil Recovery 2009. 2009. p. 743-759.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Haghshenas, A & Amani, M 2009, Sensitivity analysis to investigate possibility of steam injection in an Iranian carbonate heavy oil field. in 15th European Symposium on Improved Oil Recovery 2009. pp. 743-759, 15th European Symposium on Improved Oil Recovery 2009, Paris, France, 27/4/09.
Haghshenas A, Amani M. Sensitivity analysis to investigate possibility of steam injection in an Iranian carbonate heavy oil field. In 15th European Symposium on Improved Oil Recovery 2009. 2009. p. 743-759
Haghshenas, A. ; Amani, Mahmood. / Sensitivity analysis to investigate possibility of steam injection in an Iranian carbonate heavy oil field. 15th European Symposium on Improved Oil Recovery 2009. 2009. pp. 743-759
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