The Fugro-Jason E^Plus™ set of applications is designed from the ground up as a lithologic interpretation environment, meaning it is designed to properly handle both geologic and geophysical data in a smooth, seamless, efficient manner. Seismic interpretation workstations are typically poor at incorporating geologic data, and geologic workstations are typically poor at incorporating seismic data. Fugro-Jason is designed to handle both in a truly integrated fashion, which allows you to make better reservoir management decisions.

The E^Plus module provides a rich working environment providing the following functions:

3D Volume View and Body Checking
Section View
Map View
Well Log Editor
Cross Plots and Histograms
Layer and Horizon Attribute Extractions
Data Links - GeoFrame, Landmark, FloGRID, 123DI

Volume Viewing and Body Checking

The Volume View and Body Checking application is designed for rapid investigation of large data sets, both for interpretation and detailed quantitative and qualitative analysis of data. In the following series of figures we show seismic data being integrated with well logs to generate an acoustic impedance data set. We then use reservoir property relationships to quickly and accurately map out the productive reservoir components, ending with a net pay map for the main pay interval.

The Volume View also features a Well Planner that allows you to interactively pick a track through selected targets and create a pseudo-well from any of your data volumes for prediction of drilling results.

The Volume View features the following data interrogation methods:

3D Volume Rendering
Inline slice
Crossline slice
Horizontal slice (time or depth)
Oblique slice (can be rotated to any position)

These slicers can be used in any combination, and can be combined with interpreted horizons, which can be displayed as flat colored surfaces, time slices, or as attributes of any selected cube.

The Body Checking system is a true 3D Volume Interpretation and Analysis system that relies on deterministic rock property relationships to establish what is and what isn't reservoir quality rock. It is much faster than traditional line and trace picking, it allows you to incorporate more volumes into your analysis, and it helps you plan the development of your reservoir more efficiently and accurately, saving time and money. With the recent release of the Workbench on the Linux platform, the Volume View application now offers unprecedented performance on a desktop or laptop computer at nearly inconsequential prices.

Section View and Interpretation

The Section View can display time or depth data, along inlines, cross lines, or any multi-segment arbitrary line, which the user can draw with the mouse in the base map. As with the base map, a title bar is provided with both main and subtitles, and the user has complete control over display types (wiggle, density, smoothed density) and color palette. Multiple overlays of trace data sets, horizons, and wells can be constructed and the plot list saved for future retrieval. Full-scale CGM+ plots can also be made from this module for management presentation. The Section View also supports horizon flattening, including interpretation on the flattened section. Interpretation functions include point mode, draw mode, plus continuous and auto tracking mode. E^Plus also includes horizon interpolation and snapping onto either seismic or property data, allowing rapid integrated interpretation of combined seismic, impedance, and other lithologic (e.g. porosity) volumes. The interpretation function is linked to the Map View and to the Volume View, so that you can see the progression of your interpretation in both viewers as you build up the structural and stratigraphic framework.

Map View

The Map View serves both a data selection and data viewing function. In any of the algorithmic products where selection of a trace gate is required, the selection can be made interactively on the base map by dragging the cursor to describe a 2D arbitrary line or a 3D volume.

The Map View supports editing functions for horizons, including interpolation, extrapolation, and smoothing with a number of filter operators to choose from. Editing to remove unwanted points via defined polygons is supported as well. Volumetric calculations and free-form arithmetic operations using multiple horizon files are also possible. In addition, each displayed horizon can be contoured, either with itself or some other horizon file. Culture data are also supported, and scaled hardcopy (CGM+) can be produced for management displays.

Well Log Editor

The Well Log Editor is an integral part of any reservoir characterization workflow using seismic data and wavelet estimation. It shows the synthetic tie of the well to the seismic, given the selected wavelet. The Well Log Editor is integrated with the Wavelet Estimation process via inter-process communication (IPC), so that the log synthetics automatically refresh whenever the selected wavelet changes, and the wavelet is flagged for re-estimation whenever the editing of the log changes. All the standard log-editing capabilities are supported, including bulk shift, stretch and squeeze, and editing of any of the logs. The time-depth relationship is preserved so that edits in the time log to tie it to the seismic alter the time-depth relationship to keep everything consistent with the original depth sonic. Checkshot corrections can be applied, and well tops can be entered and edited. Importantly, synthetics can be generated using an EarthModel™ solid model to incorporate structure around the well into the synthetics. The user has full control over the layout of the panels and displays.

Crossplots and Histograms

Crossplots and Histograms are used to analyze data or relationships between data. The Workbench supports cross plots in multiple dimensions by using color and shapes in addition to the two axes, and histograms can be overlain in a single display to compare multiple data sets with similar ranges, or a multipanel histogram can be used to compare data sets with differing ranges. Trace data, horizon data, or well data can be analyzed in the program, in either time or depth. User-controlled data reduction options make the analysis of large files practical. Once displayed, the user can set cutoffs or polygons to segregate the data, and can fit polynomial relationships to the data or subsets of the data (using the cutoffs or polygons.) These tools are dynamically linked to other displays such as Section View, Map View, Well Log View, etc., and the cutoffs or polygoned data will be highlighted.

Well Log View

The Well Log View lets you view multiple well logs from various wells independent of their X, Y location. You can open as many panels as you like, set the vertical axis to time, TVD, or MD, and put whichever curves you want in any panel.

The Well Log View interacts with the Crossplots and Histograms program such that when you place the cursor in the well log view, the crosshair in the crossplot of the same well will show you which point it is. Conversely, clicking on points in the Crossplot (or enclosing them with polygons) will highlight the corresponding points in the Well log view. This interaction allows for rapid assessment of how rock properties help discriminate the desired geologic units.

Data Links

The Jason Geoscience Workbench® (JGW) is designed to sit downstream of the regional interpretation and mapping system and therefore must be able to import data from a wide variety of systems. It does this through tight links to:

Landmark's SeisWorks and OpenWorks
GeoFrame link to GeoQuests IESX system
ASCII and LAS links for other data
Custom links to proprietary software within our customer base.

The Workbench also sits upstream of reservoir simulation systems, and therefore exports data via RESCUE to:

FloGrid
Gocad
Others accepting ECL format

Since it sits between these systems, many customers refer to the Workbench as a Data Integration System. Data to be imported includes seismic surveys, interpreted seismic horizons, velocity data, and well logs and tops.

Summary

E^Plus is an excellent platform for comprehensive analysis of multi-disciplinary geoscience data, and contains a rich set of tools for well tying, 2D and 3D data viewing, line and volume interpretation, project data management, information analysis, and visualization. It is particularly well suited to the volume analysis of rock property data derived from multi-disciplinary input. These tools fit well within a large-scale interpretation, mapping, reservoir characterization, and reservoir simulation environment, but are also suitable as a complete standalone interpretation, analysis, well tying, and visualization system for smaller operations.

EPlus