NMR T[sub 2] Inversion along the Depth Dimension

Autor: Boqin Sun, Mark Skalinski, Keh-Jim Dunn, Martin D. Hürlimann, Yi Qiao Song, Paola Fantazzini, Villiam Bortolotti
Rok vydání: 2008
Předmět:
Zdroj: AIP Conference Proceedings.
DOI: 10.1063/1.3058555
Popis: The spurious signals in NMR logging often cause neighboring depth intervals of the same rock type to have dissimilar T2 distributions and oscillatory porosity responses. We found that we can use the 2D NMR concept to jointly invert T2 distributions of sequential depth records using the depth as the extra dimension and basis functions as the regularizing tool for smoothing, thereby constraining the solutions to have a reasonable behavior. Our results show fluctuation of both porosity and shape of T2 distribution is reduced. Such practice increases the feasibility of using T2 distribution as a rock type indicator.
Databáze: OpenAIRE