​

Coherence (Variance)

​

1. Possible Channel

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

 

Figure 2 shows the comparison of the original seismic data before and after coherence attributes. From variance analysis, we have observed the presence of channels. The channels are in low amplitude. This shows that the channels do not contain infills which is sand.

​

​

​

​

​

​

 

​

​

​

​

​

​

​

​

​

2. Fault

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Based on Figure 4, it shows the comparison of our seismic data before and after applying the coherence (variance) attributes. From this part of the seismic data, we can identify some faults in Figure 4. The faults in the original data are not clearly seen thus we applied coherence attributes. After applying the attribute, we can clearly see the faults. There are three major fault and two minor faults identified in our seismic data.

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

 

From Figure 5, we could see the three major faults clearly in the seismic data after applying coherence attributes.  

​