Ikon Science Releases RokDoc 5.6 for Unconventional Reservoirs

This week, Ikon Science releases RokDoc 5.6 software; providing powerful new science to model unconventional reservoirs including shales, fractured reservoirs, heavy oils and compacting reservoirs. This release provides unique functionality for quantitative interpretators and reservoir teams.

Ikon Science's Software Director, Paul O'Brien commented:
'This significant release completes two strands of our long term strategy to provide the $40bn global reservoir evaluation business, with state of the art science, which will enable quantitative exploration, development and production in all reservoir, geopressure and fluid types. The latest additions to the Rokdoc platform allow for the identification of 'sweet spots' in unconventional hydrocarbon resources such as heavy oil, tight sands or shale plays. The Chronoseis Reservoir monitoring package now includes new features such as the introduction of reservoir geometry as a date-dependent property and the ability to invert to pressure and saturation. The RokDoc platform now has new two way linkages to Petrel* and other leading industry software'.

RokDoc® 5.6:

New Features

• Delivery Inversion module - link provided for CSIRO's stochastic petro-elastic inversion method. Implemented via an Inverter and Analyser function - Delivery is directly run from RokDoc, output returns to RokDoc for QC.
• Wavelet Estimation and Extraction - phase wrapping capability +/- 180°.
• Bulk LAS export.
• RokDoc features an upgraded external interface which will be supported on all platforms.
• Improved Petrel* link offering a 2-way transfer of properties as well as a Linux to Windows connection.

The Unconventional in RokDoc

• Heavy Oils - a new fluid substitution function that contains a Vs component.
• Shale plays - extending Gassman's equation for anisotropy, utilising Brown and Korringa (1975), and Mavko and Bandyopadhyay (2009).
• Applying the Kuster-Toksoz rock physics model - carbonates, tight sands and fractured rocks.
• Self-consistent approximation - calculation of effective K and Mu after the introduction of inclusions. A homogenous background is previously assumed.
• No separate licence required.

Chronoseis 5.6:

New features - Geomechanical Compaction Modelling

• Reservoir geometry joins fluid saturation, pressure and time-lapse seismic, as a date dependent property to form a complete 4D model.
• Production induced compaction in reservoir, estimated from pressure-change, porosity-loss and subsidence maps, is modelled with associated subsidence and velocity change in the overburden.
• Validate pressure-variations in reservoir simulations, porosity-change in 4D seismic and improve infill well-planning.
• Observe subsidence on fences simultaneously with porosity/pressure change.
• Available with the Reservoir Monitoring licence.

Enhanced 4D Seismic Modelling and Analysis

• User-defined Master-Scripts - user-defined scripts for Rock Physics Models can be made from Master Scripts containing proprietary algorithms which are not part of ChronoSeis or RokDoc.
• 4D Seismic Modelling - Recall RokDoc 1D/2D cross-plot templates or user-defined scripts.
• Inverting time-lapse properties to 4D saturation and pressure - opt to use user-defined scripts or RokDoc cross-plot templates in inverse mode.
• Variogram Modelling - from well logs, trend maps or 3D model properties. Model can be stored and recalled.
• Absolute Coloured and Spectral Inversion - realised and stored as 3D/4D seismic volumes.

Ikon Science's CEO Martyn Millwood Hargrave added:
'This release accelerates Ikon's strategy to optimise success through science. We will continue to provide the rock physics modelling tool of choice. Over the past 5 years we've worked closely with reservoir experts of the world's most successful E&P companies to provide globally relevant workflows, applicable to reservoirs at all stages of the reservoir life cycle.'

* Mark of Schlumberger