Topic:
How to compute porosity from velocity, density, or dt.

Description:
 

Solution:
1.) LPView > Log Preparation #2 > Compute Pseudo Log #5 > #3 Velocity/Density/DT
  to Porosity

2.) #1 Velocity to Porosity 
    a.) Parameters #1 > Options 1-2 set the beginning and end depth range > 
        option 3 sets the Matrix Velocity > option 4 sets the fluid velocity 

    b.) Change Curves #2 > choose the velocity type (only velocity types will be
        displayed for choice).

    c.) Compute/Display #3 > Save Data #5 > Save Data #1, Exit #2 to quit
        without saving the edit.

3.) #2 Density to Porosity 
    a.) Parameters #1 > Options 1-2 set the beginning and end depth range >
        option 3 sets the Matrix Density > option 4 sets the fluid Density 

    b.) Change Curves #2 > choose the density type (only density types will be 
        displayed for choice).

    c.) Compute/Display #3 > Save Data #5 > Save Data #1, Exit #2 to quit
        without saving the edit. 

4.) #3 DT to Porosity
    a.) Parameters #1 > Options 1-2 set the beginning and end depth range >
        option 3 sets the Matrix Transittime > option 4 sets the transit time
        fluid.  

    b.) Change Curves #2 > choose the DT type (only DT types will be
        displayed for choice).

    c.) Compute/Display #3 > Save Data #5 > Save Data #1, Exit #2 to quit
        without saving the edit.

Note - This uses the Wyllie relationship which works well in clean consolidated
formations with uniformly distributed pores.



Last Modified on: 25-NOV-98