Time-Lapse Seismic Matching Inversion Technology and Application Based on Temperature-sensitive Rock Physics Experiment

Abstract

The Long Lake Oilfield in Canada is rich in oil sand resources and the horizontal well-assisted gravity drainage (SAGD) method is mostly used in the development of it. Time-lapse seismic matching inversion technology is an effective means to realize the dynamic monitoring of oil sand SAGD development. However, due to the unclear geophysical monitoring mechanism of oil sand SAGD development reservoirs, and the lack of logging data, it is limited to directly describe the dynamic development characteristics of oil reservoir steam chambers by time-lapse seismic matching inversion technology. Therefore, this paper applies a time-lapse seismic matching inversion technology based on temperature-sensitive petrophysical experiments to realize dynamic monitoring of oil sand SAGD development. Firstly, based on the oil sand temperature-sensitive petrophysical experiment, the petrophysical mechanism of oil sand SAGD development was clarified, and the traditional Gassmann equation was improved to establish a petrophysical model, and the logging data matching the seismic data was reconstructed; Secondly, through the time-lapse seismic matching inversion technology, the internal differences of the reservoirs caused by the development are finely characterized; finally, the inversion results are converted into temperature field data by using a temperature-sensitive petrophysical quantity version to characterize the dynamic characteristics of the steam cavity development. The application shows that the research results effectively guide the deployment of adjustment wells and tap the potential of remaining oil in Changhu Oilfield, reducing 18 inefficient wells.

Copyright 2022, IFEDC Organizing Committee.

This paper was prepared for presentation at the 2022 International Field Exploration and Development Conference in **’an, China, 16–18 November 2022.

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