Geologic Visualization

Communication of geologic data is particularly amenable to graphic imagery. Non-geologists benefit from well executed drawings and other graphic images that build their understanding of earth processes and geologic conditions. Though maps are the most common form of geologic graphics, drill logs and sections are more directly linked to the input data.


From Raw Data to Logs

Stratamodel uses well designed graphics to communicate complex geologic information to engineers and managers in a form easily grasped by non-geologists. Translation of data collected at the job site to logs, sections and maps provides a sound basis for design decisions at the office. The front line of subsurface geologic data collection is the drill, CPT or trench site. Stratamodel excells at rendering these data into easy to read graphic logs.

Logs represent a linear sequence of subsurface sample points

Hollow stem auger drilling is the standard for shallow, "soft" substrates.

Hollow stem auger log

Rotary drilling is the least expensive means of exploring bedrock.

Chip log

Core drilling provides the most accurate data when exploring bedrock.

Core log

Cone Penetration Test (CPT) technology is the state of the art for "soft" substrates.

CPT log

CPT can also produce a pore-pressure dissapation test, similar to a well slug test.

CPT log

Drill units fitted with instrumentation to record drill energy inputs.

Chip log

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From Logs to Sections

Often the job of logging downhole geology during a drilling program is delegated to the least experienced (least espensive) geologist or technician available. Frequently, more than one novice logs drill holes on the same site. It is false economy to spend thousands of dollars on a drilling program and then degrade the data through inconsistent or inaccurate observations and measurements. Based on decades of experience, Stratamodel provides consistent, accurate measurements within the limitations of the drilling technology used in the investigation.

Lining up drill logs and correctly correlating subsurface horizons follows from accurate reliable downhole data. Stratamodel provides finished sections during and at the close of drilling programs.

Geologic sections provide a view of slices through the subsurface.

Hollow stem auger drilling and CPT correlated to provide a slice through the subsurface.

Geologic section

From Field Maps to GIS

Maps have evolved from static, paper based analogs of the real world to dynamic digital representations of the most recent data available. The digital world has opened the potential for geologists and engineers, to simulate outcomes of alternative courses of action without costly real world consequences. One of the greatest challenges of the past was keeping project maps up to date. This is less of a a problem for those who have implemented a geographic or geologic information system. As new data are collected and added to a project database that is harnessed to a map engine, real time information can be disseminated across a network to all project personnel as maps, tables, and graphs.

Stratamodel maps range from hand drawn field maps to digital maps linked to a backend database in a geographic information system (GIS). Stratamodel uses state of the art software such as ESRI ArcMAP, Autodesk Map 3D, and Techbase to design and implement GIS based on field mapping, remote sensing, drilling, geochemical surveys and geophysics. Stratamodel in partnership with West Arete Computing provides web-based GIS using PostGIS and Ruby on Rails.

Map compilation from field sheets, digital elevation models, and drill logs into a three dimensional GIS.

Geologic field mapping plots geologic units and structures at the surface.

Geologic field map sheet

Digital elevation models (DEM) supply three dimensional mapping support.

digital elevation model

Core drilling provides accurate bedrock data from the subsurface.

Core log

A 3 dimensional GIS is the combination of downhole logs, field maps, and a DEM.

3D GIS