A Study of Tilted Oil-water Contact in Sarvak Calcareous Reservoir of Civand Oil Field in the Persian Gulf

Document Type : Research Paper

Authors

1 Department of Geology, Sciences and Researches Branch, Islamic Azad University, Tehran, Iran

2 Campus of Research and Development in Upstream Petroleum Industry, Research Institute of Petroleum Industry (RIPI),Tehran

Abstract

Determining the position of the oil-water contact (OWC) and improving the understanding of tilted OWC in fields help to explain risk analysis and development drilling. Oil-water contact has been defined in all wells of Civand (Sirri C) field utilizing petrophysical logs and confirmed using RFT data. Tilted oil-water contact has been established and presented in the field after providing isovalue map of OWC and using well correlation map in different directions. The oil-water contact has been tilted close to 0.5 degrees westward. According to the results, the OWC tilting associated to hydrodynamic flow in Sarvak (Mishrif) aquifer in the east and west directions is a reliable indicate; moreover, because the petrophysical characterization of reservoir rock (porosity and permeability) is better in the west part of the field than the other side, transition zone thickness is decreased and oil-water contact level is increased.

Keywords

References

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Journal of Petroleum Research
Volume 24, Issue 77 - Serial Number 77
May and June 2014
Pages 67-78

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