Exploration Insights September 2019 | Page 30

30 | Halliburton Landmark Exploration Insights | 31 INSIGHTS FROM PLAY CROSS SECTIONS Analogues Application of knowledge from proven plays aids the identification of analogues in frontier basins. The use of analogues helps to define play concepts and decrease exploration risk. For example, if an analogous basin along the margin has a proven play consisting of deep-marine clastic turbidites, we may expect to see the same play potential in the basin of interest if they are tectono-stratigraphically similar. K 2019 YEAR OF THE CRETACEOUS Analogues can be local, regional, or global and can encompass a range of factors, such as: » » Similarities in the architectural framework and the type of basin » » The same reservoir observed in different trapping mechanisms » » Similar reservoirs in adjacent basins where a working source rock has been identified » » Correlation to the conjugate margin Predicting New Plays Understanding the exploration history of an area identifies successful, failed, and target plays. This can be used to generate new play concepts by extending working plays or identifying new ideas (Figure 8). In Figure 8, known data from wells and proven plays depict the working elements of the system. From this, plays can be predicted by: » » Going deeper — In a basin with working petroleum systems, are there deeper plays related to older source rocks that might be present, which are yet to be tested? » » Extending laterally — Are there other areas along strike of the working feature that could be exploration targets? For example, if shoreface sands are prospective in one basin along a margin, do the other basins along the margin have the same potential? » » Extending distally — If a play is proven in the proximal setting, could it be extended into the deeper basin? If there are proven reservoir quality sands in the shoreface, the application of sequence stratigraphy suggests that associated deep-marine turbidites could also be prospective. » » Finding new play elements — From wider regional understanding or through use of analogues, can any other potential play elements be identified that are yet to be tested in the area? ACKNOWLEDGMENTS A Global Approach to Ranking Exploration Potential Sarah Laird, Mike Simmons, and Rebecca Head are thanked for their contributions to this article. Offshore Cretaceous plays have yielded some of the most significant discoveries of the last decade. With so many underexplored opportunities, how can we efficiently identify the remaining potential? REFERENCES • Create global chance maps through an integrated analysis of the Neftex ® Insights portfolio • Assess presence and effectiveness of petroleum system elements to rank opportunities DISCLAIMER • Identify critical geological risks and the appropriate analogues This article is a synthesis based upon published data and information, and derived knowledge created within Halliburton. Unless explicitly stated otherwise, no proprietary client data has been used in its preparation. If client data has been used, permission will have been obtained and is acknowledged. Reproduction of any copyrighted image is with the permission of the copyright holder and is acknowledged. The opinions found in the articles may not necessarily reflect the views and/or opinions of Halliburton Energy Services, Inc. and its affiliates including but not limited to Landmark Graphics Corporation. Contact us today to find out how we are bringing together cutting- edge geoscience content and sophisticated geoprocessing techniques on the cloud to achieve basin screening in minutes. Gluyas, J. and R. Swarbrick 2004. Petroleum Geoscience. Blackwell Publishing Ltd (Wiley-Blackwell), 1-359 p. (GURBB_234804). AUTHOR Emily Firth, Team Lead — Chance Mapping, Halliburton Landmark Since joining in 2014, Emily has gained experience working on several teams across the company, including content management, rock properties, and seismic integration. Emily now manages the Chance Mapping team, delivering basin-scale play screening. Emily holds a Master of Geology degree from the University of Leicester.