PARAMETRIC WORMHOLE STUDIES ON MATRIX ACIDIZING CARBONATE RESERVOIR
Stimulation using matrix acidizing can cause a wormhole around the well so that it can increase the permeability around the wellbore which results in a decrease in skin values. Wormholes are channels that resemble natural fractures that have very large permeability. Wormhole is the formation of b...
Saved in:
| Main Author: | |
|---|---|
| Format: | Theses |
| Language: | Indonesia |
| Subjects: | |
| Online Access: | https://digilib.itb.ac.id/gdl/view/38694 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Stimulation using matrix acidizing can cause a wormhole around the well so that
it can increase the permeability around the wellbore which results in a decrease in
skin values. Wormholes are channels that resemble natural fractures that have
very large permeability. Wormhole is the formation of branched holes in
formation as a result of acidizing treatment.
Skin is a barrier factor that affects the rate of production. If it is positive it means
there are obstacles. Skin is an area of formation that is damaged or repaired. Skin
is formed around the wellbore. Skin is positively valuable if the area is damaged
and negatively valued if the area was improvement or stimulation.
In this study, by knowing the acid volume value, permeability ratio (k/ks),
porosity of the original formation, fractal dimension values and injection rate,
calculations were performed using the equivalent hydraulic radius concept and
making a plot to see the effect on skin factor reduction and increasing of
productivity index (PI). The indicator of the success of implementing acidizing
stimulation can be seen from the decrease in skin factor, increases in well
productivity (productivity ratio) and increased production rates. |
|---|