Model 4 - Pinchout

Modeling of a pinchout: combining scalar fields

This script demonstrates how to create a geological model with a layer of varying thickness (pinchout) using GemPy, a Python-based, open-source library for implicit geological modeling.

# Import necessary libraries
import gempy as gp
import gempy_viewer as gpv

# sphinx_gallery_thumbnail_number = 3

Generate the model

Define the path to the input data

data_path = 'https://raw.githubusercontent.com/cgre-aachen/gempy_data/master/'
path_to_data = data_path + "/data/input_data/jan_models/"

# Create a GeoModel instance
geo_model = gp.create_geomodel(
    project_name='pinchout',
    extent=[0, 1000, 0, 1000, 0, 1000],
    resolution=[50, 50, 50],
    refinement=6,
    importer_helper=gp.data.ImporterHelper(
        path_to_orientations=path_to_data + "model4_orientations.csv",
        path_to_surface_points=path_to_data + "model4_surface_points.csv"
    )
)

# Map geological series to surfaces
gp.map_stack_to_surfaces(
    gempy_model=geo_model,
    mapping_object={"Strat_Series": ('rock2', 'rock1')}
)

# Compute the geological model
gp.compute_model(geo_model)

Surface points hash:  76e41015e8bc57232f56f90ff5f9fc56d0f5d55b67a5030f9bc5c95edfed0674
Orientations hash:  575806bb62944f0604e8fecccdc9d53bfabd758bee293b1ad8f3575f173429f1
Setting Backend To: AvailableBackends.PYTORCH
GPU enabled. Using device: cuda
GPU device count: 1
Current GPU device: 0
Chunking done: 8 chunks

Solutions: 6 Octree Levels, 2 DualContouringMeshes

2D visualization

Plot the initial input data in the y direction, without computed results

gpv.plot_2d(geo_model, direction=['y'], show_results=False)

<gempy_viewer.modules.plot_2d.visualization_2d.Plot2D object at 0x7f3e459cd6d0>

Plot the computed result in the x and y directions, with data

gpv.plot_2d(geo_model, direction=['x'], show_data=True)
gpv.plot_2d(geo_model, direction=['y'], show_data=True)

• 
• 

<gempy_viewer.modules.plot_2d.visualization_2d.Plot2D object at 0x7f3eea7c0cd0>

3D visualization

Display the computed model in 3D

gpv.plot_3d(geo_model, show_lith=True, show_boundaries=True, ve=None)

<gempy_viewer.modules.plot_3d.vista.GemPyToVista object at 0x7f3e3d536cf0>