Setup Module
Purpose
The Setup Module contains general settings related to how calculated curves are displayed, the intervals over which statistics are collected, input units, and the default lithology for curves such as the neutron, density, and sonic porosity.
Primary Outputs
There are no significant output curves from this module.
Discussion
The Setup module is where you will set several important parameters that will affect your interpretation. These can always be changed after the fact. Important parameters include:
- Curve calculation start: Specify the upper end of the interval over which calculated curves should be displayed.
- Curve calculation end: Specify the lower end of the interval over which calculated curves should be displayed.
- Stats window start: Specify the upper end of the interval over which statistics for curve normalization, washout repair, and parameter remapping should be collected.
- Stats window end: Specify the lower end of the interval over which statistics for curve normalization, washout repair, and parameter remapping should be collected.
- Inferred lithology: Specify the assumed lithological reference to use for porosity curves when unknown.
It is important to note that the Stats Window will affect your entire downstream interpretation if normalization is activated, and if it is changed, your interpretation may change. This is because the normalization is based on the stats window, and then calculations are based on the normalized curves. If you wish to use different stats windows for different parts of the interpretation, you can accomplish this by using the "Database" as the curve source and using a Flow to write the normalized curves directly into your LDB.
Recommendations:
- Set the Stats window end parameter to end of available data.
- Unless explicitly known and not correctly auto-detected leave the input units parameters for each curve set to auto.
- Only set the Inferred lithology parameter on the key well if it is well known that a basin has consistently been logged in a specific lithological reference.
Here is a video tutorial covering options in this module.
Related Insights
Sample data to get started
Need some sample data to get started? The files below are from data made public by the Wyoming Oil and Gas Commission. These will allow you to get started with petrophysics, mapping, and decline curve analysis. Well header data Formation tops data Deviation survey data Well log data (las files) Production data (csv) or (excel) Wyoming counties shapefile and projection Wyoming townships shapefile and projection Haven’t found the help guide that you are looking for?
NMR Interpretation Module
Purpose The NMR interpretation module allows users to calculate porosity, bound and free fluids from the measure T1 and T2 distributions from NMR tools. Primary Outputs Discussion In oil and gas well logging, the $T_2$ distribution is used as a high-resolution "map" of the formation's pore system. While a standard porosity tool tells you how much fluid is there, NMR tells you where that fluid is trapped and whether it will flow.
General Concepts in Flows
Because Flows will be a new concept to many of you it is important to understand the general concepts that flows are built upon. These concepts are: Many tasks are repetitive These tasks should be done consistently These tasks can often be split into small pieces. What Are Flows? Flows are batch processing system that combine Flow tools to perform operations consistently across a dataset, and are especially useful for repetitive tasks like gridding data.