1887

Abstract

We have introduced a method for probabilistic calculation of the Vp/Vs2 ratio from the intercept, PP-reflection coefficient at a given angle and assumed Vp/Vs1 ratio. The method opens up the possibility to create uncertainty maps, such as a standard deviation and Shannon’s information entropy maps. By a quick scanning over the maps, we can quickly identify zones where the calculations give unstable or erroneous results. Another novelty of the approach is avoiding extraction of the gradient from uncalibrated seismic data. Instead, we find (only) one scaler by dividing the uncalibrated intercept by the intercept from synthetic seismogram and apply it to each gather at the target zone. We tested the methodology on a gas discovery in the Barents Sea.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.20130334
2013-06-10
2024-06-20
Loading full text...

Full text loading...

/content/papers/10.3997/2214-4609.20130334
Loading
This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error