Quality Control of Well Upscaling.docx

Quality Control of Well Upscaling It is important to check that the averaging of the raw well data has been correctly performed and that the statistics of the data set has not been biased during the upscaling process. There are many ways in which quality control of the upscaled result can be perform...

Quality Control of Well Upscaling It is important to check that the averaging of the raw well data has been correctly performed and that the statistics of the data set has not been biased during the upscaling process. There are many ways in which quality control of the upscaled result can be performed, and the following is not meant as an extensive list: Use visual inspection of the blocked wells parameter, for example, in a 3D view (as illustrated in the following figure) a Chart view for a Blocked well data item (including Scatterplot, Histogram, and Rose Diagram) a Correlation view the Well Log Editor dialog box The Visual Settings dialog box controls display options for blocked wells in all three views. The upscaling can be run with alternative bias logs and results can be compared. Check statistics and view information, using the commands available from the task group in the Task pane associated with the blocked wells parameter. Carry out some simple data analyses. A wide range of data analysis options are available for blocked wells. Blocked wells data (porosity log) displayed in a 3D view Selection of Algorithm for Blocking Wells For the later algorithm used for blocking well (RMS 11 and later), you can manage the resolution of the output Blocked well raw logs from the User Preferences dialog box (see the Data Analysis section in the Setting User Preferences Help page). Setting and applying a value for the Number of samples per meter in the User Preferences dialog box denotes coarse or fine Blocked wells raw log data. This automatically updates blocked well raw log data in the following dialog boxes and views: Well Log Editor dialog box for a Blocked well data item (see also the Raw Logs section in the Blocked Well Log Editor Help page) Statistics dialog box for a Blocked well data item (see also Blocked Well Statistics) Charts views for a Blocked well data item (including Scatterplot, Histogram, and Rose Diagram) These updates are visible in the blocked well chart view and in the filter information for charts. It is recommended to refresh these chart views, if open, to see these updates. Note Raw log data is not stored in RMS; it is created on-the-fly when requested by jobs and by certain views. In addition, raw log resampling does not affect the blocking and upscaling of the original logs in any way; these are only used to handle the original logs, for example, in scatterplots and other places where a common set of MD values is needed.