Tixier Rocky Mountain Method
INPUTS	Use ft and Deg F Use m and Deg C
	Depth =	Total depth =
	Avg surface temp =	Bottomhole temp =
	Mud resistivity, Rm =	Rm measuring temp =
	Percentage of formation water left in invaded zone, z% =	Common values: z%=0 Porosity < 10% z%=5 Porosity 10% - 18% z%=7.5 Porosity 18% - 25% z%=10 Porosity > 25%
	Ri, shallow resistivity =	Rt, deep resistivity =
	Rw, formation water resistivity =
	Define optional porosity model:	a = m =
INPUT RMF?	Estimate Rmf Input Rmf
	Resistivity of mud filtrate, Rmf =
	Rmf measuring temperature =
RESULTS	Temperature gradient = per 100 depth units
	Formation temperature =
	Corrected Rm =	Corrected Rmf =
	Mixed water resistivity, Rz =
	Water saturation, Sw% =
	Porosity% from Archie model (limestone: a=1, m=2) =
	Porosity% from Humble model (sandstone: a=.62, m=2.15) =
	Porosity% from optional model =

RECORDING:

Depth,Total Depth,Avg Surf Temp,Bottomhole Temp,Rm,Rm Temp,z%,Ri,Rt,Rw,a,m,Input an Rmf?,Input Rmf,Input Rmf Temp,Temp Gradient,Formation Temp,Rm corr,Rmf corr,Rz,Sw%,Archie Porosity%,Humble Porosity%,Option Porosity%

When you finish your calculations,
select the recorded data, copy it,
and then paste it into a spreadsheet
as comma-delimited values to save it.