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GulfSPAN 3D FTG with Sparse 2D Seismic Data

ION, in partnership with ARKeX, completed a pilot project that integrates regional PreSDM seismic data from GulfSPAN with a multi-attribute (tensor) airbone Gravity Gradiometry survey by ARKeX. This new and innovative integration of a sparse set of seismic lines, high resolution well data, and gravity gradiometry serves to improve the geologic understanding of Louisiana's coastal region.

Mapping Areas With Reduced Seismic Data Coverage

This project solves long-standing problems for exploration and is an efficient and cost effective way to approach a 3D view of the subsurface, especially in this environmentally sensitive transition zone along the Gulf Coast. The GulfSPAN data delivers deep imaging of the regional geology and the deeper, less explored areas of the basin. The goal of the project is to improve the interpretation along each line and extrapolate the interpretation between lines to produce a regional geologic fabric. Seismic and well log delineation of the shallower Miocene and Sub-Miocene growth fault systems can be achieved, but the extrapolation between lines is unconstrained. Gravity gradiometry data is used to improve the velocity model for reprocessing of existing lines and processing of new onshore GulfSPAN lines.

Click on the data example to zoom and pan over the data.

Click on the image to zoom and pan over the data.
The integrated gravity gradiometry product results in a 3D earth model. This enhanced interpretation is developed when a gravity gradiometry derived model is coupled with access to pre-stack depth seismic data and available well log data to enable an improved petrophysical template, principally in the velocity/density relationship.

The cube is the result of application of an integrated gravity gradiometry and seismic interpretation which creates a much improved earth model in areas where seismic data is sparse. This data cube is workstation compatible and can be updated as new control data is acquired.

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