Geothermal gradient

Input(s)

$T_{b h}$ : Maximum Recorded Temperature $\left(\right.$ degree ${ }^{\circ} \mathrm{F}$ )

$T_{s}$ : Temperature Near Surface $\left(\right.$ degree $\left.{ }^{\circ} \mathrm{F}\right)$

$D_{b h}$ : Total Depth of Logged Borehole (ft)

$g_{G}:$ Geothermal Gradient (degree ${ }^{\circ} \mathrm{F} / 100 \mathrm{ft}$ )

g_{G}=\left(\frac{T_{b h}-T_{s}}{D_{b h}}\right) * 100

Bassiouni, Z., 1994, Theory, Measurement, and Interpretation of Well Logs. SPE Textbook Series Vol. 4. Chapter 4, Page: 75.