Guyana Suriname Basin likely 50 Ma older than existing models suggest, with increased source rock potential and prospectivity, Frogtech Geoscience Study reveals

Canberra, Australia (7 September 2017)In 2012, the USGS estimated that the Guyana Suriname basin contains 26,000 MMBO of technically recoverable oil*. This makes for the third-most prospective basin in the South American and Caribbean region, the 8th largest in the world**. And a basin of great interest to the world’s major E&P players.

Exploration activity and data acquisition has ramped-up in recent years, yet the results are a mixed bag of world-class discoveries and non-commercial finds. For E&P companies approaching this undeveloped basin, the geology is not well understood and the exploration risk is high.

Uncertainty remains around the formation of the basin; the tectonic events and phases that opened the container, influenced the stratigraphy and deformed it thereafter – how many tectonic events were there in the Jurassic? What is the composition of the basement and how that has influenced the structure of the basin, the location of depocentres for reservoir and source, and the heat-flow from the basement for maturing the hydrocarbons?

These questions and concerns, and many more, can be addressed with Frogtech Geoscience’s multi-client Guyana Suriname SEEBASE® Study & GIS.

Using the industry-recognised SEEBASE® workflow, Frogtech’s team of geoscientists and GIS experts have integrated and interpreted public domain geological and geophysical data to develop a new model for the evolution, depth-to-basement structure and derived properties of the Guyana Suriname basin.

More information on Frogtech Geoscience, Guyana Suriname SEEBASE® Study:

In a modernisation of current models, the new Frogtech study proposes that 4 tectonic phases during the Late Triassic and Jurassic periods formed the basin with extension beginning approximately 50 Ma earlier than previously thought. This proposes the previously unrealised presence of Early Jurassic source rock in the distal, deep-water part of the basin, analogous to the stratigraphy of the proximal, onshore areas of the basin.

Included in the study is a new tectonic reconstruction to the support Frogtech model. Eight plate reconstructions using newly revised basement terrane interpretations show the relative position of the Guyana-Suriname basin at the ultimate tip of the propagating Central Atlantic.

The predictive nature of the Guyana Suriname SEEBASE® Study & GIS provides insights into how the basement topography in the deep-water areas of the basin play an important role in localising the position of basin floor flans, much sought after as potential reservoir rocks. The study includes basement and sediment thickness maps which, together with plate reconstructions, better predict the deposition of source rocks associated with the rift and early post-rift phases in both Jurassic and Cretaceous time.

Fundamental to the needs of explorers, Frogtech Geoscience’s Guyana Suriname SEEBASE® Study & GIS includes a geologically-controlled regional model for basement-derived heat flow, involving a much wider distribution of the extent of continental crust in the basement than all previous models. The Frogtech heat-flow model is proven having been found to be consistent with well-based geothermal gradient values published in industry literature.

* Fractile-95 value, USGS Fact Sheet 2012-3046, May 2012

** U.S. Geological Survey 2012 World Assessment of Undiscovered Oil and Gas Resources, Nov’ 2013

 About Frogtech Geoscience

Frogtech Geoscience provides industry leading solutions in non‐seismic geophysics, geodynamics, structural geology, seismic and well interpretation, stratigraphy and petroleum systems to reduce exploration risk. 

Our earth‐science experience and research capability extends across a broad range of applications for both government and commercial enterprise. Based in Australia, our work and expertise extend across the globe. Our projects for industry and governments cover the business sectors of conventional and unconventional petroleum, minerals, groundwater, geothermal and CCS. With over 300 client projects worldwide, we are a recognised leader in reducing exploration risk through our provision of innovation and high quality, science‐based solutions.

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