STRUCTURAL Dataset
This dataset was developed to study uncertainties related to the geometry and position of faults as well as vertical block displacements. It models simplified fluvial depositional environments divided by a fault. The dataset focuses on analyzing structural factors that affect the reservoir flow properties.
Main characteristics
- 3D «cubes» of properties: porosity and permeability, supplemented with structural elements like faults.
- A fault divides the model into two blocks with varying mutual displacements.
- Model dimensions: 16 × 12 × 10 cells.
- Grid resolution: 50 × 50 × 1 m.
- A total of 10 000 realizations were generated. Differences between realizations are defined by combinations of fault positions and the magnitude of vertical block displacements (relative positions of blocks).
The Petrel software workflow (SLB™), based on the object modelling method, was used for data generation.
Uncertainty parameters
To create diversity and study the influence of structural factors, the following parameters were varied:
- Width, curvature amplitude, and orientation (dip angle) of the channels.
- Channel positioning within the model was altered, allowing the study of how geometry influences the reservoir flow properties.
- The fault could occupy one of 15 discrete positions within the model.
- Vertical block displacement varied from -12 to +12 m. This allowed modeling situations where reservoir connectivity is disrupted.
- Porosity and permeability varied between blocks to reflect the impact of structural changes.
| Scenario | STRUCTURAL |
|---|---|
| Number of channels | one |
| Width | [300; 500] |
| Thickness | [10; 20] |
| Wavelength | [1000; 2000] |
| Amplitude | [0; 300] |
| Orientation | 90 |
| Fault location | 15 discrete positions |
| Block displacement | [−12; 12] |
The petrophysical relationship between porosity and permeability was defined by a deterministic function with some slope variation and bias to provide some uncertainty.
The petrophysical relationship between porosity and permeability follows a “standard” exponential relationship. It should be noted that the uncertainty range for the entire dataset is quite broad, which can be attributed to the inherent uncertainty in the petrophysical relationship of the parameters.
Usage rights
- The dataset is provided exclusively for educational and research purposes.
- Access to the dataset does not give the right to redistribute or share the data in any way.
- Every research paper or other materials built on this dataset should include a reference to DOI 10.3997/2214-4609.202244105.