--> ABSTRACT: Seismic History Matching and the Influence of Seismic Reprocessing on Reservoir Performance Prediction, by Martin Bayly, Xuri Huang, and Geoff King; #90913(2000).
[First Hit]

Datapages, Inc.Print this page

ABSTRACT: Previous HitSeismicNext Hit history matching and the influence of Previous HitseismicNext Hit reprocessing on reservoir performance prediction

Bayly, Martin1, Xuri Huang2, and Geoff King3
(1) Western Geophysical, Perth, East Perth, WA, Australia 
(2) Western Geophysical, Houston, TX 
(3) Western Geophysical, N/A

Once an oil reservoir is being produced, it is important to understand the fluid movement, the flow mechanism, and the reservoir heterogeneity. Recently 3-D time lapse Previous HitseismicNext Hit data have been successfully used to improve reservoir characterization and management. These mostly qualitative studies showed that time lapse Previous HitseismicNext Hit even on legacy data resulted in a better understanding of the production behaviour of the reservoir (Anderson et al. 1997, Eastwood et al. 1998). Huang et al. presented a quantitative Previous HitseismicNext Hit history matching method which integrated time lapse Previous HitseismicNext Hit data with reservoir simulation (Huang et al. 1998a). The approach uses a stochastic optimization method to minimize the differences between synthetic and observed time lapse 3D Previous HitseismicNext Hit data and simultaneously matches the production history at the wells. Huang et al. (1998b) further improved the Previous HitseismicNext Hit history matching methodology by deriving a more representative initial porosity estimation and by optimizing the relative permeability curve.

Using two 3D Previous HitseismicNext Hit data sets acquired over a field in the Gulf of Mexico, this paper reviews the Previous HitseismicNext Hit history matching method and demonstrates how data reprocessing will affect the reservoir modeling, especially the quality of the dynamic performance prediction. Based on 'off-the-shelf' data and simple post stack matching a reasonable difference map is obtained. An initial reservoir model is characterized using the base survey and the model is updated using the Previous HitseismicNext Hit history matching method. Dynamic performance in the time frame after the monitor survey, although more accurate than that based on conventional history matching, underestimates actual production. It is then demonstrated how reservoir performance prediction is much improved through the use of pre-stack Previous HitseismicNext Hit reprocessing of the two 3-D volumes before computation of the Previous HitseismicTop differences.

AAPG Search and Discovery Article #90913©2000 AAPG International Conference and Exhibition, Bali, Indonesia