Among many additional features implemented, InterWell 2020 version mainly focused on the evolution of two major applications: the well data conditioning, including Time/Depth conversion domain, and the seismic characterization, including the seismic fracture characterization workflow, and the seismic characterization on geostatistical inversions. All evolutions have been proposed to provide the best experience for all InterWell users. The new survey version is still handled by our updated survey migrator down to InterWell 2014 studies.
InterWell has now the capability to load Depth well data while maintaining the previous possibility to work with Time well data. The architecture of the data has been enriched, provided trajectory curves (in Time or Depth domain), marker collections (in Time or Depth domain), log curves (in Time or Depth domain) and Time-Depth laws. Once a TD law selected as preferred, the log curves are automatically converted in section view against the seismic data and the trajectory automatically processed in Time if defined in Depth domain.
From the brand-new well synthesis window, which provides a synthesis and editable view of all the well content, or by a right-click on well data, a bunch of new functionalities has been implemented to allow the users to condition the well data in Time domain, regular and at seismic scale though a one-step Time-Depth conversion module. All impedance computations, for all inversion workflows, are included in this release (acoustic and elastic inversion, geostatistical inversion, multi-component inversion…).
The fracture characterization workflow can be applied to all volumes, input or resulting from the inversion results, with less global noise content (synthetic) or possible higher resolution (reflectivity). It is composed of three modules: attribute computation, attribute normalization and attribute blending.
The attribute computation proposes more than 20 attributes, available both in volumes and maps, that are known to highlight the fractures and faults from the seismic data, based on Beicip-Franlab experience. The attribute normalization is a key step to focus on the fracture information only while discarding the noise out from the attributes. The attribute blending allows to mix attributes with different weights, in function of their relative confidence and level of noise. Indeed, a zone identified by several attributes as fractures can be more reliably considered as fractured.
Both attribute normalization and attribute blending support a preview mode to check, in map or section, the quality of the attribute before computing the entire volume and map, to save computation time.
A brand-new multi-variate analysis module is available to estimate a continuous property (PHIE, VSH, TOC…) directly from a training sample using 1, 2 or 3 variables, applied on 3D through the inversion results. For this module and the discriminant analysis, working on lithology, a preview mode has been implemented to assess beforehand the quality of the prediction : for the multi-variate analysis, a cross-plot between the original and predicted property is plotted, while, for the discriminant analysis, re-assignment tables are displayed to show key statistics to the users.
Both modules, under a dedicated license feature, can be used on geostatistical inversion workflows, so that each computation is performed on all final simulations (and co-simulations for elastic inversion), traducing the impedance estimation uncertainties directly to the desired property uncertainties, which can be continuous or a facies code. The outputs are key statistics, selected by the user, to retrieve the uncertainties, but also the base case and best case of the prediction.
The cube cut-off module has evolved as a finalization of the discriminant analysis workflow, to re-assess the assignment as function of different cut-off values by lithology, with the additional ability to keep only the results between two key horizons, as the prediction is often limited to the key level scanned by the training samples.
New functionalities on pointsets, including their creation from well data, and the map extraction along pointsets, offer new data manipulation to enrich your seismic characterization workflows.
A Coordinate Reference System can now be defined in InterWell survey. Then, all the data to import (horizon, seismic, well…) can be converted on-the-fly if another CRS is defined by data. This new property can also be used to provide a new functionality on map views, providing background satellite/composite maps though Bing and Google web services for visual quality control and contextual data display.
Some enhancements have been proposed to handle azimuthal gathers, with an additional Azimuth key. Therefore, it is possible to display the gathers in InterWell, but also to condition azimuthal full-stack and azimuthal angle-stack by considering the azimuthal range while stacking to begin the azimuthal workflow available in InterWell to capture the anisotropy.
Our support organization is here to help you put at work this new release and can be contacted via its email address firstname.lastname@example.org or via phone or via on-site support. For more information about the innovations of InterWell 2020 check out the software release notes in the user area or contact us through email@example.com.