Study of Pattern Correlation Between Time Lapse Seismic Data and Saturation Changes
Abstract/Contents
- Abstract
- Time-lapse seismic data has found its applicability in calibrating geological models, history matching, determining well locations and optimizing production. Time-lapse seismic data is used as a reservoir-monitoring tool as it can provide information on fluid dynamics in the reservoir, which is based on the relation between variations of seismic attributes and changes in formation pressure and fluid saturation. In his study Wu (2003) established a correlation between saturation changes and seismic data changes. However his methodology was applied for simple assumptions such as only two wells were operating and one time interval was investigated. The understanding of the correlation could be improved by testing the methodology under different conditions. In this work we addressed those issues. Particularly we investigated the impact of different template sizes on the correlation. After finding the best template we used it to study how the correlation changes under the different fluid flow conditions. Moreover we investigated how the correlation evolves over time for two, four and ten years time interval. The study showed that the template size should be approximately equal to the Fresnel zone to get maximum correlation. The pattern correlation is always higher than the point-to-point correlation. The pattern correlation shows high results (0.7) in the beginning of the production but declines with time. If more than one injectors is used the correlation worsens. The correlation has the same value for two and four years interval. The effect of pressure on the correlation between saturation change and seismic data change has not been studied here. However the pressure change also has some effect on seismic data, thus would be interesting to incorporate the pressure model in the future studies.
Description
| Type of resource | text |
|---|---|
| Date created | June 2010 |
Creators/Contributors
| Author | Kuralkhanov, Darkhan |
|---|---|
| Primary advisor | Mukerji, Tapan |
| Degree granting institution | Stanford University, Department of Energy Resources Engineering |
Subjects
| Subject | School of Earth Energy & Environmental Sciences |
|---|---|
| Genre | Thesis |
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Preferred citation
- Preferred Citation
- Kuralkhanov, Darkhan. (2010). Study of Pattern Correlation Between Time Lapse Seismic Data and Saturation Changes. Stanford Digital Repository. Available at: https://purl.stanford.edu/xj886by3185
Collection
Master's Theses, Doerr School of Sustainability
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