Resistivity inversion initial value selection method based on array lateral logging data

The invention discloses a resistivity inversion initial value selection method based on array lateral logging data. The method comprises steps that forward calculation is carried out based on a radialstep stratum model, resistivity amplitude difference coefficients S1, S2, S3, S4, S5 and S6 are defi...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: WANG QINGHUI, NI XIAOWEI, GUAN YAO, LIU DIREN, PAN WEIGUO, YANG QING, FENG JIN
Format: Patent
Sprache:chi ; eng
Schlagworte:
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:The invention discloses a resistivity inversion initial value selection method based on array lateral logging data. The method comprises steps that forward calculation is carried out based on a radialstep stratum model, resistivity amplitude difference coefficients S1, S2, S3, S4, S5 and S6 are defined, four basic logging curves MLR1a, MLR2a, MLR3a and MLR4a corresponding to the radial step stratum model are obtained, and a change chart of resistivity amplitude difference coefficients along with the radius of a flushing zone is established; the quantitative relation between an initial value rxocz of the radius of the flushing zone and the resistivity amplitude difference coefficients is established through linear regression based on the change chart of the resistivity amplitude differencecoefficients along with the radius of the flushing zone; the MLR4a is utilized as a stratum resistivity initial value Rtcz, and a flushing zone resistivity initial value Rxocz is obtained based on pseudo-geometric factor defi