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• W2075538047 abstract "Abstract Discovered in April 1978, Ras Fanar Field in the Gulf of Suez of Egypt has delivered a total cumulative production of 114 MMSTB oil (Jan 2013) from Middle Miocene coralline algal buildups and laterally intercalated dolomitic layers within sabkhas deposits. OOIP was estimated to be 90 MMSTB in 1984. This paper presents a simple but apparently effective 3D reservoir modelling workflow which used acoustic impedance (AI) data and its relationship to effective porosity as a deterministic 3D modelling parameter (porosity-facies). In 2002 an AI-conditioned model for the Ras Fanar Field was completed and a number of infill wells were successfully drilled within the main field which mediated the production decline of the field. Based on the model a number of higher risked drilling targets were subsequently identified to the west of the main field. The westward extension of the Ras Fanar field was confirmed by well RF-B10 in 2004. This well encountered the original field oil-water contact at 2450' TVDss despite 20 years production in the main field. The oil-water 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. Ras Fanar West development drilling has subsequently targeted lagoonal patch reef bodies landward of the main Ras Fanar Field reef trend. Each development well has been carefully positioned within the highest quality porosity facies. The target locations have been optimised so that the reservoir is penetrated with the standoff from the gas-oil and oil-water contacts. Two phases of development have been successfully implemented, primarily based on the AI-conditioned reservoir model. Incremental production of 10 MMSTB has been achieved from the Ras Fanar West development area since 2004 and significant upside is still recognised. Introduction The Ras Fanar Field lies some 2 Km offshore east of from the town of Ras Gharib (Figure 1). The field comprises NW-SE trending structural trap bounded by a major fault system to the SW and tilted to the NE. The depositional setting of the reservoir comprises a 10–12 Km wide carbonate ramp which extends eastwards from Ras Gharib Field to Ras Fanar Field. The proposed sequence stratigraphic geological model allows for both lateral and vertical facies transitions between the Nullipore carbonates and South Gharib evaporitic-carbonate units. Several phases of upward-shoaling deposition are noted and main reef trend and patch reefs were periodically exposed as islands or raised beaches. Periods of subaerial exposure created high porosity layers (Super Permeability layers) within the reservoir resulting from karstification, solution collapse brecciation and possible mixing-zone dolomitisation. Diagenetic overprinting of the original facies was intense therefore a petrophysical-based modelling procedure was adopted (Figure 2)." @default.
• W2075538047 created "2016-06-24" @default.
• W2075538047 creator A5042740811 @default.
• W2075538047 date "2014-12-10" @default.
• W2075538047 modified "2023-09-23" @default.
• W2075538047 title "Extending the life of Brown Field Developments by Acoustic Impedance-Conditioned 3D Reservoir Modelling: An Example from a Mature Gulf of Suez Carbonate Producing Asset (Ras Fanar Field), Egypt" @default.
• W2075538047 doi "https://doi.org/10.2523/iptc-18126-ms" @default.
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