What is fluid typing?
PetroWiki. Hydrocarbon typing and prediction of fluid properties by nuclear magnetic resonance (NMR) logs is predicated on reliable laboratory correlations between NMR measurements (i.e., relaxation times and diffusion) and fluid properties, for example: Specific gravity. Viscosity.
What does NMR log measure?
NMR logging, a subcategory of electromagnetic logging, measures the induced magnet moment of hydrogen nuclei (protons) contained within the fluid-filled pore space of porous media (reservoir rocks).
What is T2 cut off?
T2 cut off, or T2c, is the maximum T2 for part of porosity that is occupied by immovable fluids. It is used to distinguish movable fluid (FFI) from the irreducible or non-movable fluid (BVI). In the T2 distribution, BVI is all the amplitudes in the spectrum having T2 values less than the T2c.
How does NMR logging work?
NMR logging exploits the large magnetic moment of hydrogen, which is abundant in rocks in the form of water. The NMR signal amplitude is proportional to the quantity of hydrogen nuclei present in a formation and can be calibrated to give a value for porosity that is free from lithology effects.
What is FMI log?
A downhole micro electrical resistivity technique first used for oil and gas wells in the late 1980’s.
What is NMR in geology?
Borehole nuclear magnetic resonance (NMR) is an emerging geophysical method being applied to hydrogeology investigations. NMR is a quantitative geophysical method that can be used to make in situ assessments of porosity, water content, mobile and immobile water fraction, and estimates of permeability.
What are the 3 types of fluids?
The Types of Fluids are:
- Ideal Fluid. An ideal fluid is incompressible and it is an imaginary fluid that doesn’t exist in reality.
- Ideal plastic Fluid.
- Real Fluid.
- Newtonian Fluid.
- Non-Newtonian Fluid.
- Incompressible Fluid.
- Compressible Fluid.