Wet clay and dry clay

[edisonnadeak]

Dear Folks,
I get trouble with input parameters,please tell me how I can use cross-plot in order to determine Density, neutron, Rt and Rxo of wet clay

Good morning all,

Please introduce me, my name edison, i am a junior well log analyst.

Maybe I can give suggestion for the question above.

In my experience, the wet clay point could be determine in your zone ( if you found a thick shale interval) using x-plot RHOB-NPHI-GR.

Find (helped by histogram of GR to determine your most shale point) the RHOBCL and PHINCL point as wet clay point.

Dry clay point should be determine by laboratory worked.

For resistivity we could read at the same depth at our shale/clay point.

For case you not have a thick shaley interval, then you could use from another near well, or interval that analog with your interval/zone from depositional environment as an approach.

That is a simple tips from me, maybe it isn't totally right.


regards,

Edn

[pggeology]

Thank you Edison so much. I do the same as your method but probably I define wrong shale point so it cause high water saturation. Could you guide me how I can get sand point and shale point in GR histogram. I could run it and chose All Gaussian Line distribution. Then I chose min and max line. Thank you again for your help.

Best Regards,
PGGeologist