Introducing the Neftex® Source to Sink

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From Mountains to the Sea: Every Great Discovery Starts With a Journey

Introducing the Neftex® Source to Sink

‘Source to sink’ is the appreciation of the complete sedimentary system, from initial erosion of hinterland lithology, to drainage, and, eventually, to deposition. At the highest level, it requires knowledge of a wide range of controlling factors, such as tectonics, uplift, erosion, climate, and sea level fluctuations. However, at the fundamental level, the key questions that should always be asked include: ‘Where has this package of sediment come from?’ and ‘How did it get here?’

Answers to these sediment provenance questions are complex but powerful factors in determining the quality of hydrocarbon systems within a basin. To help explorationists assess these key considerations Halliburton has developed new Source to Sink maps, available within the Neftex Insights® portfolio. These enable geoscientists to obtain a rapid, first-pass assessment of the potential quality and extent of sediments being derived from eroded hinterland within each drainage basin, at discrete time intervals. Users can visualize paleo-drainage basins and paleo-river networks as well as calculate the maximum depositional limit for sediments. An assessment of the quality of the hinterland material available for erosion within each drainage basin can be made and used as a proxy for sediment quality (Figure 1).

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Figure: Lower Cretaceous ‘source to sink’ relationships in the proto-Atlantic

The new ‘source to sink’ maps are built upon the Neftex Insights portfolio, and so the data related to the key controlling factors has been gathered, standardised, and integrated in a consistent manner. The maps can, therefore, be used to conceptualise the ‘source to sink’ theory. You can use this new content to derive regional insights relevant to exploration on the potential quality of clastic material being shed from hinterland sources and the depositional limits of sedimentation within the sink. In addition, this new content can be used to track the changing nature of the complete sedimentary system through geological time.

Further details demonstrating how hinterland screening and integrated ‘source to sink’ theories have been applied and validated in the southern Gulf of Mexico, and the potential impact for the Miocene Zama discovery, can be found in our Exploration Insights magazine article from August (Nicoll & Head, 2018).

Bring the power of Source to Sink thinking into your workflows.

Contact us today for more information.