  Researchers have used NMR to measure multi-phase fluid saturation and
distribution inside porous media of natural rock. However, the NMR signal
amplitude suffers reduction with the increase of temperature. The main reason
is the Transverse Overhauser Effect, where heating increases the freedom for
ionic motion, affecting spinning behavior by having two spins go in two
opposite directions to form the Dipolar Coupling. We approach solving NMR
thermal effects correction by melding experimentation and numerical simulation
method. We use NMR for Cretaceous carbonate rock multi-phase flow research. We
conduct time step in-situ temperature measurement for four different sections
of the flooding system at the inlet, center, and outlet along the flooding
path. In addition, we conduct a temperature measurement at the NMR device
radial axis, representing the permanent magnet temperature. We build a 3D
cylindrical heat transfer model for the numerical simulator that simulates
thermal effect distribution on the NMR for optimally generating the correction
model. The insight provided by the simulator improved the understanding of the
thermal distribution at the natural rock core plug to produce a better thermal
correction model that meld experimentation and simulation, a method we call
Th-CENS.
