Part of Well Logging related to assessing reservoir properties in Petrophysical or Reservoir Engineering studies:

Logging category		Completion	Logging category		Completion
Petrophysics			Reservoir Engineering
Open Hole Formation Logging	OHL	OH	Wireline Formation Testing	WFT	OH
Behind Casing Resistivity	BCR	CH	Through Casing Pressure	TCP	CH
Pulsed Neutron Logging	PNL	CH & OH	Reservoir Flow Profile	RFP	CH & OH
			Flow Pressure Profile	FPP	CH & OH

All log interpretation models have a form of:

(1)	$\begin{array}{l}\displaystyle {\rm OuputLog}(l) = {\rm Model}_{\left[ \alpha_1, ... \alpha_M \right]} \left( {\rm InputLog_1}(l), {\rm InputLog_2}(l), ... , {\rm InputLog_N}(l) \right)\end{array}$

where

$\begin{array}{l}(x,y,z)\end{array}$	3D spatial coordinates along well trajectory
$\begin{array}{l}l(x,y,z)\end{array}$	along-hole depth
$\begin{array}{l}\left[ \alpha_1, ... \alpha_M \right]\end{array}$	model parameters

Fig. 1 – Sample of OH Log Intepretation.

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