Conversion of root mean square or interval velocity into average

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SUMMARY

The discussion focuses on converting root mean square velocity (Vrms) to average velocity for depth conversion in seismic data analysis. The DIX equation is utilized to derive interval velocity (Vint) from Vrms. The user seeks a mathematical relationship to calculate average velocity based on provided two-way time and velocity data at specific depth points. The data includes various time and velocity pairs, which are essential for determining the average velocity needed for accurate depth conversion.

PREREQUISITES
  • Understanding of seismic velocity concepts, specifically Vrms and Vint.
  • Familiarity with the DIX equation for converting Vrms to Vint.
  • Basic knowledge of two-way time in seismic data interpretation.
  • Proficiency in mathematical relationships involving velocity and depth conversion.
NEXT STEPS
  • Research the application of the DIX equation in seismic data analysis.
  • Learn about average velocity calculations in subsurface modeling.
  • Explore seismic depth conversion techniques and methodologies.
  • Investigate software tools for seismic data interpretation, such as Petrel or GeoDepth.
USEFUL FOR

Geophysicists, seismic data analysts, and anyone involved in subsurface modeling and depth conversion in geophysical studies.

taimur
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I really ain't sure whether my problem is mathematical or related to Physics but i most probably think it has a mathematical solution.

I am have a situation where I have subsurface seismic velocity windows at certain Depth points. In the window I have been given the two-way time in seconds and root mean square velocity (Vrms). I have used the DIX equation to convert Vrms into interval velocity (Vint) but i need average velocity for depth conversion i.e time into depth.

I am giving you the data at a particular CDP. Please tell me the relationship that can be made between the given quantities to find the required (average velocity).

time----Vrms----Vint
0-----1500----1940
0.31----1940----2058
0.62----2000----2510
0.85----2150----3821
0.97----2420----3312
1.15----2580----5403
1.23----2850----4399
1.35----3020----4353
1.96----3490----5286
2.57----3990----5403
5------4730
 
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