Exponential sum trend estimation for Nuclear Magnetic Resonance (NMR) spectroscopy on rock samples from oil wells

Introduction: Nuclear Magnetic Resonance (NMR) spectroscopy allows obtaining both qualitative and quantitative information on a mixture of organic compounds for the oil industry. The main objective of this study was to evaluate exponential sum trend estimation for Nuclear Magnetic Resonance spectroscopy on rock samples from oil wells and detect unknown impurity factors in the relaxation rates due to the apparent time interval.