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Adding Value Through Near-Previous HitFieldNext Hit Exploration Driven by 3-D Acoustic Impedance Conditioned Reservoir Modeling: An Previous HitExampleNext Hit from a Mature Gulf of Suez Carbonate Producing Asset, Ras Fanar Previous HitFieldNext Hit, Egypt

 

Vaughan, Richard D., RWE-Dea, Cairo, Egypt

 

Discovered in April 1978, Ras Fanar Previous HitFieldNext Hit in the Gulf of Suez of Egypt has produced approximately 96 MM STB (January 2005) oil from Middle Miocene coralline algal buildups and laterally intercalated dolomitic layers within sabkhas deposits. This paper presents a simple but effective 3D reservoir modelling workflow which used acoustic impedance (AI) Previous HitdataNext Hit and its relationship to effective porosity as a deterministic 3D modelling parameter (“porosity-facies”) rather than the more traditional facies based approach.

In 2002 a seismic conditioned model for the Ras Fanar Previous HitFieldNext Hit was completed and a num­ber of infill wells were successfully drilled within the main Previous HitfieldNext Hit which mediated the produc­tion decline of the Previous HitfieldNext Hit. Based on the model a number of higher risked drilling targets were subsequently identified to the west of the main Previous HitfieldNext Hit. The westward extension of the Ras Fanar Previous HitfieldNext Hit was confirmed by well RF-B10. This well encountered the original Previous HitfieldNext Hit oil-water contact at 2450’ TVDss despite 20 years production. The contact is thought to be in part influenced by secondary gas cap expansion which has “pushed” the oil column back to the original spill point.

A number of deviated wells have been positioned to target a series of amalgamated lagoonal patch reef bodies which formed on the landward side of the main Ras Fanar cor­algal reef complex. Up to January 2005 three near-Previous HitfieldNext Hit exploration wells have been success­fully appraised the western extension of the Ras Fanar Previous HitfieldNext Hit and a further two wells will be drilled during 2005. The target locations have been optimised so that the wells penetrate the reservoir with a standoff from both the gas-oil and oil-water contacts.

The model will be updated to incorporate the new well Previous HitdataNext Hit during 2005 and the share­holders of the Ras Fanar Previous HitFieldTop will continue to use it for future well planning.