Influence of high salinity water formation

[ndt1235]

High salinity can reduce formation water resistivity. but the relationship between Rw and Rt on this case is not clear.
Eg: salinity: 20.000ppm, and 50.000ppm

Pls help me

[petrophysicist]

hi
the more water zone resistivity, the higher the RW,
so how could you say that the high resistivity reduce the RW?
no the opposite is right.
RW=(PHIT*2 x Rt)/a
the higher the salinity, the lower the Water resistivity.
if you need any help just let me know
geology5500@yahoo.com

[ndt1235]

Sorry about the mistake!
First hight salinity make low formation resistivity, so how can it do that?

Tks,

Marry Christmas
Happy new year

[petrophysicist]

hello
the more the salinity, the lowest the resistivity because the saline water carry the current throw the formation, so there is nothing stops it.
so where you find a saline water you will find low resistivity, and of course the opposite is right.