Case study Same field, very different seismic responses
Seismic response and amplitude can vary at discovery and appraisal locations. To effectively asses possible reserves, it is crucial to understand what causes colour variations and test what amplitude and frequency combinations best discriminate geological features to explain those changes.
Discovered in 2007, the Thebe gas field consists of several gas bearing sandstones of Triassic age Mungaroo Formation bound in a tilted fault block.
Two wells were drilled based on slightly different seismic response at the appraisal well from that of the discovery location.
Is the difference in seismic response due to lithology, hydrocarbon type, sand thickness or geometry between the two locations? Click here to read more.
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"Correlation of frequency decomposition colour blends at well locations can be used to improve understanding of the seismic data, by allowing extrapolation of properties away from well locations."
