The stratigraphic horizon grids were generated by picking formation tops in 16,200 borehole geophysical logs and interpolating between them in the Williston Basin of North Dakota, South Dakota, and Montana. Collectively, the horizon grids outline the structural framework of the Williston Basin from the ground surface to the crystalline basement. The grids define the boundary surfaces between geologic layers in the 3D petroleum systems model. Not every horizon in the petroleum systems model, however, ties to a specific interpreted set of formation tops (see the ‘Williston_Basin_data_overview.csv’ table to see which horizons were derived from interpreted formation tops). Some horizons were split/calculated to accommodate source rock intervals or net evaporite thicknesses (denoted halite or anhydrite in the file name suffix). Although some lithostratigraphic units are not present throughout the entire area of interest (AOI), the petroleum systems model requires that each grid cover the entire AOI. Another requirement for the petroleum systems model is that each horizon grid be assigned a geologic age. This is a child item of a larger data release titled "Data release for the 3D petroleum systems model of the Williston Basin, USA".

These data tables describe observations made on borehole geophysical logs from 16,200 wells in the Williston Basin. It includes detailed surface hole locations, true vertical depths of formation tops, and true vertical thickness values between formation tops. The data contained in the “Williston_Basin_well_data.csv” table was used in generating the formation top shapefiles (“Formation top shapefile points for the 3D petroleum systems model of the Williston Basin, USA” child item) and the true vertical thickness shapefiles (“True vertical thickness shapefile points for the 3D petroleum systems model of the Williston Basin, USA” child item). A data glossary that describes the columns in the “Williston_Basin_well_data.csv” table is also included. This is a child item of a larger data release titled "Data release for the 3D petroleum systems model of the Williston Basin, USA".

These data tables describe observations made on borehole geophysical logs from 16,200 wells in the Williston Basin. It includes detailed surface hole locations, true vertical depths of formation tops, and true vertical thickness values between formation tops. The data contained in the “Williston_Basin_well_data.csv” table was used in generating the formation top shapefiles (“Formation top shapefile points for the 3D petroleum systems model of the Williston Basin, USA” child item) and the true vertical thickness shapefiles (“True vertical thickness shapefile points for the 3D petroleum systems model of the Williston Basin, USA” child item). A data glossary that describes the columns in the “Williston_Basin_well_data.csv” table is also included. This is a child item of a larger data release titled "Data release for the 3D petroleum systems model of the Williston Basin, USA".

Formation tops were picked in 16,200 wells from the Williston Basin of North Dakota, South Dakota, and Montana. Each formation top was picked using borehole geophysical log data. Many wells in the Williston Basin do not penetrate the entire stratigraphic section and in many other cases the shallow intervals were not logged. In total, there are 141,096 individual picks composing 29 sets of formation tops. Each top set represents a recognizable stratigraphic marker that can be correlated from well to well. The formation tops serve as foundational observations for building the stratigraphic and structural framework of the 3D petroleum systems model. How each formation top assigns to age, lithostratigraphic unit, and modeled horizon is outlined in the "Williston_Basin_Data_Release_Overview.csv" data table in the parent directory of this data release. This is a child item of a larger data release titled "Data release for the 3D petroleum systems model of the Williston Basin, USA".

Formation tops were picked in 16,200 wells from the Williston Basin of North Dakota, South Dakota, and Montana. Each formation top was picked using borehole geophysical log data. Many wells in the Williston Basin do not penetrate the entire stratigraphic section and in many other cases the shallow intervals were not logged. In total, there are 141,096 individual picks composing 29 sets of formation tops. Each top set represents a recognizable stratigraphic marker that can be correlated from well to well. The formation tops serve as foundational observations for building the stratigraphic and structural framework of the 3D petroleum systems model. How each formation top assigns to age, lithostratigraphic unit, and modeled horizon is outlined in the "Williston_Basin_Data_Release_Overview.csv" data table in the parent directory of this data release. This is a child item of a larger data release titled "Data release for the 3D petroleum systems model of the Williston Basin, USA".

This describes 28 thickness point shapefiles that represent true vertical thickness (TVT) values by calculating the difference between stratigraphically adjacent formation tops picked on borehole geophysical logs. In wells where adjacent formation tops are missing, no TVT value is calculated. The TVT values are a measure of vertical thickness and do not account for the structural dip of units encountered in the wellbore. In total, the dataset contains 115,789 TVT values calculated in 16,200 wells from the Williston Basin of North Dakota, South Dakota, and Montana. This is a child item of a larger data release titled "Data release for the 3D petroleum systems model of the Williston Basin, USA".

This describes 28 thickness point shapefiles that represent true vertical thickness (TVT) values by calculating the difference between stratigraphically adjacent formation tops picked on borehole geophysical logs. In wells where adjacent formation tops are missing, no TVT value is calculated. The TVT values are a measure of vertical thickness and do not account for the structural dip of units encountered in the wellbore. In total, the dataset contains 115,789 TVT values calculated in 16,200 wells from the Williston Basin of North Dakota, South Dakota, and Montana. This is a child item of a larger data release titled "Data release for the 3D petroleum systems model of the Williston Basin, USA".

The model layer facies grids describe geographic variations in lithology mixtures (facies) used in the 3D petroleum systems model of the Williston Basin. The grids provide constraints on the physical properties used in the model simulation, including mechanical compaction, thermal conductivity, heat capacity, radiogenic heat, porosity and permeability trends, diagenesis, and capillary entry pressures. The grids were derived from borehole geophysical log signatures from two key model layers: the middle member of the Devonian-Mississippian Bakken Formation and the Upper Ordovician Icebox Formation. All the other model layers used a single lithology mixture and were not represented by gridded facies maps. This is a child item of a larger data release titled "Data release for the 3D petroleum systems model of the Williston Basin, USA".

The model layer facies grids describe geographic variations in lithology mixtures (facies) used in the 3D petroleum systems model of the Williston Basin. The grids provide constraints on the physical properties used in the model simulation, including mechanical compaction, thermal conductivity, heat capacity, radiogenic heat, porosity and permeability trends, diagenesis, and capillary entry pressures. The grids were derived from borehole geophysical log signatures from two key model layers: the middle member of the Devonian-Mississippian Bakken Formation and the Upper Ordovician Icebox Formation. All the other model layers used a single lithology mixture and were not represented by gridded facies maps. This is a child item of a larger data release titled "Data release for the 3D petroleum systems model of the Williston Basin, USA".

This data release contains data associated with the journal article "Modeling the maturation history of the stacked petroleum systems of the Williston Basin, USA". Collectively, the data release includes 13 child items and metadata files that provide detailed descriptions of the attributes, processing steps, and original data sources. There is also a data table, "Williston_Basin_Data_Release_Overview.csv" that describes how all the child items are linked with one another.