SIS Exploration Pty Ltd
Reservoir characterization:
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Amplitude analysis and interpretation, AVO analyses.
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Deterministic and Stochastic Inversion.
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Seismic lithology and fluid prediction.
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4D Monitoring Producing Reservoirs.
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Managing and QC quantitative interpretation projects.
Case study 1: Cooper Basin, SA.
Lithology prediction project for Charo Oil Field area.
Model based deterministic inversion was used. Oil reservoir is a sand channel within shaly Jurassic Birkhead Formation as structurally controlled stratigraphic trap.
Note: laterally sealed sand channel between Charo-8 and Charo-4 wells.
Project was generated using Regional Data Source public data, SA.
Enfield two-way time structural map.
Case study 2: North West Shelf, WA.
a) AVO fluid prediction for Enfield Oil Field using Intercept/Gradient 3D volume.
Oil and gas have been predicted in Macedon Sandstone of the Late Jurassic reservoir within structurally controlled trap.
3D view with predicted fluids is shown within limited probe volume.
b) Maps showing petrophysical properties and internal architecture of the Macedon reservoir.
c) Fluid and lithology predictions using Stochastic AVO Inversion. Note, only one well Enfield-3 has been used for inversion due to the lack of log data for other wells. Enfield-2 is displayed as the blind well.
Project was generated using Open file public data, WA.
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(b)
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3D volume fluid prediction.
Case study 3: North West Shelf, Western Australia.
Reservoir Monitoring using 4D seismic data: Pressure and Saturation changes during production using Extended Elastic Impedance (EEI), Enfield Oil field.
This new method was developed by Dr. S. Shevchenko and Prof. W. D. Pennington (Michigan Technological University, USA).
This technique identifies and maps changes in pressure and saturation in a producing reservoir by applying EEI to time-lapse seismic data. The method uses time-lapse seismic difference data rotated to specific EEI χ angles that are optimized for the changes expected in a given reservoir.
Reservoir fluid-pressure change ΔP (psi) map. Contour interval ΔP = 500 psi. Thick contour is 0. White color represents null values. Black traced wells are producers, blue traced are water-injector wells. Pressure anomalies F, G, J, E, I, H are discussed in the published paper: "Pressure and Saturation Changes Estimated From Extended Elastic Impedance Properties Using Time-Lapse Seismic Data: Enfield field, NW Australia", The Leading edge, 41(11), (See free access to the publication in the "About us\Publications" menu).
Movable-oil-saturation change ΔSwM. Solid highlighted contour ΔSwM = 0.1.