TGS completes enhancement of 2D seismic offshore Northern Sumatra

The 7756 line km 2D reprocessing project utilises a modern broadband pre-stack processing workflow and the project extent covers a play-diverse proven hydrocarbon basin comprising Miocene-Oligocene syn-rift clastic and carbonate plays. The survey coverage extends both outboard and inboard from the existing North Sumatra 3D project, which includes the Pase sub-basin of the North Sumatra Basin. Recent discoveries such as Timpan-1, Layaran-1, and the latest Tangkulo-1 all lie within the 3D, providing important well calibration points.

The combined 2D and 3D data will enhance the understanding of existing discoveries and shelfal wells along the southern and eastern margins of the basin. The current proven plays include Miocene carbonates, Miocene/Pliocene clastics, and the Oligocene syn-rift. Additionally, the dataset has clearly imaged an untested older syn-rift play. GeoStreamer technology delivers high-quality resolution at all depths, from overburden to deeper basement structures, providing a better understanding of the basin development history and deeper plays.

David Hajovsky, EVP of Multi-Client at TGS, commented, “By enhancing this legacy North Sumatra dataset through a modern broadband PSDM processing workflow, we can tie high-quality, modern seismic data to several of the region's most significant discoveries of the last five years. This will enable the extension of key play concepts into open acreage, creating exciting exploration opportunities across this Indonesian basin.”

Final depth-migrated deliverables are now available for both the 3D and 2D datasets.

Read the article online at: https://www.oilfieldtechnology.com/drilling-and-production/06082024/tgs-completes-enhancement-of-2d-seismic-offshore-northern-sumatra/