Page 29 - Basic Well Log Analysis for Geologist

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BASIC RELATIONSHIPS OF WELL LOG INTERPRETATION ZONE

PROFILE - HYDROCARBON
RESISTIVITY
THROUGH A PERMEABLE

ANNULUS
ao
HORIZONTAL SECTION

INVADED
ZONE
OIL-BEARING BED

UNINVADED
ZONE

| Rt
I
I
|
|
|
1 |
! I
| !
4 1 4 Sw << 60%
ro
~
I
| 1 |
| , !
1 | 1 |
| i!

T | T
| | l
| |
{
RADIAL DISTRIBUTION © | Ry --->-— i |
!
OF RESISTIVITIES >] p, J rot Rt

bh ' L
—_ Ran eee oe oe he ew we
wn {
Rmt > > Rw w \ { |
I 1
| | !
FRESH MUDS { l pb | Ro

up cake SI \ INVADED ZONE, | hj UNINVADED ZONE
| “FLUSHED ZONE} 4+ ANNULUS
| \ j I

1 t
I 1 |
I | I
> 1 | R t
bE | 1
>
- i
~ 2 1
Rmf = Rw ”
oc

SALT MUDS

INVADED ZONE UNINVADED ZONE
FLUSHED ZONE ANNULUS