Experimental Investigation of Scaling Factors That Describe Miscible Floods in Layered Systems
Abstract/Contents
- Abstract
- We use scaling arguments to describe miscible floods in a two layered system. Three different dimensionless parameters are used: An effective shape factor, R2l, a gravity number, Ng, and a modified gravity number, Ng*. Lab experiments are conducted to investigate how the three parameters affect flow patterns. 2D glass models with glass bead packing are saturated with water, and then a brine is pumped through. Experiments are also performed for water intruding into a brine saturated medium. At high pump rates, low values of Ng*, viscous dominated flow causes poor production. As the flow rate is lowered, Ng* increases and production improves. But as flow rate is further increased the production improvement slows down. Viscous crossflow and gravity crossflow compete to determine production profiles.For favorable mobility experiments, flow is stable because the two tendencies oppose each other and flow can be scaled as a force ratio. The scaling parameter Ng thus best describes flow patterns. For unfavorable mobility intrusions the two phenomena act in the same direction, flow is thus unstable and can be scaled as a time ratio. Ng* therefore best describes flow patterns.For the same flow rates, a long model gives better production than a short model only if the mobility is unfavorable. If the mobility is favorable, the short model gives better production. For a favorable mobility intrusion, the high permeability layer must be on top for best results. Orientation of layers is therefore very important.
Description
| Type of resource | text |
|---|---|
| Date created | June 1997 |
Creators/Contributors
| Author | Peters, Bradley M. |
|---|---|
| Primary advisor | Blunt, Martin |
| Degree granting institution | Stanford University, Department of Petroleum Engineering |
Subjects
| Subject | School of Earth Energy & Environmental Sciences |
|---|---|
| Genre | Thesis |
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Preferred citation
- Preferred Citation
- Peters, Bradley M. (1997). Experimental Investigation of Scaling Factors That Describe Miscible Floods in Layered Systems. Stanford Digital Repository. Available at: https://purl.stanford.edu/my482wn9003
Collection
Master's Theses, Doerr School of Sustainability
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