These experiments illustrate that paramagnetic ions imbibed in rock brine can shorten the relaxation time of the water protons, but can't effect the relaxation time of oil protons.
实验表明，顺磁离子能加快水相的核磁共振弛豫衰减速度，而对油相信号没有影响。
2
The nuclear magnetic relaxation characteristics of formations will change if there are paramagnetic materials in the formations.