Sonic/Neutron Crossplot
INPUTS	Schlumberger/Gearhart Halliburton/Dresser
	Compensated Sidewall
	Limestone matrix Sandstone matrix Dolomite matrix
	Neutron log %porosity =
	Common travel times (micro-sec/ft) Sandstone: 55.6 Limestone: 47.5 Dolomite: 43.5 (X3.28 for micro-sec/m)
	Matrix travel time =	Log travel time =
	Fluid travel time =	Drilling mud: 189
SHALE CORR	No correction Shale correction
	Old rocks Tertiary rocks
	Compacted Uncompacted
	Gamma-ray in clean zone =	Gamma-ray in shale =
	Gamma-ray in zone of interest =	Shale travel time =
	Shale neutron %porosity =
RESULTS	Gamma-ray index =	Volume% of shale =
	%Sonic log corr LS porosity =
	%Neutron corr LS porosity =
	Crossplot Pass #1:
	%Ls =	%Do =
	%Xpor =
	Crossplot Pass #2:
	%Ls =	%Ss =
	%Xpor =
	Crossplot Pass #3:
	%Ss =	%Do =
	%Xpor =