Q. Which one of the following statements is INCORRECT with regard to Nuclear Magnetic Resonance (NMR) logging? (ΦNMR – NMR derived total porosity, ΦD – Density porosity)
(A)The relaxation time (T2) decreases with decrease in pore size.
(B)The ΦNMR is greater than ΦD in a water saturated sandstone formation.
(C)The NMR logs provide lithology independent measurement of total porosity.
(D)The ΦNMR is less than ΦD in a gas saturated shaly sandstone formation.
Ans: The ΦNMR is greater than ΦD in a water saturated sandstone formation.
![Determine the correctness (or otherwise) of the following Assertion [A] and the Reason [R]](https://www.gkseries.com/blog/wp-content/uploads/2023/10/Determine-the-correctness-or-otherwise-of-the-following-Assertion-A-and-the-Reason-R.jpg)
