Geomechanics Module
Purpose
The Geomechanics module is where key rock strength properties are calculated including bulk, Young's, and shear moduli as well as Poisson's ratio.
Primary Outputs
The following curves are the primary interpretations made in this module.
| Curve Name | References |
|---|---|
| YOUNGS_MODULUS | Young's modulus |
| BULK_MODULUS | Bulk modulus |
| SHEAR_MODULUS | Shear modulus |
| POISSONS_RATIO | Poisson's ratio |
| BRITTLENESS | Measure of rock brittleness |
Discussion
Note – it is highly recommended that you run the shear log modelling module before evaluating the geomechanics if your well does not have a shear log available, as some calibration will be required.
This module is primarily intended to display the key moduli, Poisson’s ratio, and to help the user visualize reservoir continuity as a function of brittleness. The parameters available to the user include:
- Analyze On: Choose if you wish to evaluate gross reservoir, net reservoir, or net pay.
- Brittleness Method: Choose the Simpleton (Danomics), Jarvie et al., or Wang and Gale methods.
- Brittleness Min Selector: Choose if you wish to use the mineralogy from the inversion or from the RhoMaa-UMaa crossplot. This is required for the Jarvie et al., and Wang and Gale methods. If using the RhoMaa-UMaa crossplot, this requires a PE curve to be available.
- Frac Barrier: Define a frac barrier using the syntax outlined in the CPI Config help.
- Minimum Thickness: This parameter establishes the minimum thickness of reservoir analyzed on to be considered for continuity analysis.
- Maximum Discontinuity: This parameter establishes the maximum thickness of non-reservoir to be included for continuity analysis.
- Max Frac Barrier: This parameter establishes how much interval meeting the definition of a frac barrier can be included for continuity analysis.
The Continuity Analysis is designed to help the user visualize what packages may be connected for the purposes of drilling and completing a horizontal well. Note, this is a quicklook method and is not based on a numerical simulation.
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.