polymer gel-2-eng.ppt

7/26/2019 polymer gel-2-eng.ppt

1/19

September 11-12,

Johor Bahru, Somche 2001

THE EFFECTS OF MOBILITY RATIO

ON THE EFFICIENCY OF GEL

EMPLACEMENT

Sugiatmo Kasmungin

Azman Ikhsan

Si! "u Yo!

Ahma# Kama$ I#%is

Enhanced Oil Recovery/Iimproved Oil Recovery Group

Petroleum Engineering Department

Faculty of Chemical and Natural Resources Engineering

niversiti !e"nologi #alaysia

$%&%' !#( )"udai( *ohor +ahru( #alaysia


2/19

September 11-12,


INTRO&'CTION

Polymer gels are used to plug the water channels

and block the water flows n the porous meda

!ack of understandng of the mechansm of gelemplacement leads to poor effcency of gel

emplacement n feld applcatons

Polymer gels reduce the permeablty to watermore than the permeablty to ol


3/19

September 11-12,


"ATER AN& OIL FLO"S IN GEL(&a! an# )hang* +,,-.

"ater flows through the water based gel as

dffuson

#mmscble ol forms droplets when

penetrates through the gel

$he ol droplets flow as fngerng

%el has hgher resstance to ol compared to

water


4/19

September 11-12,


THE EFFECTS OF "ETTABILITY ON

PERMEABILITY RE&'CTION(Ni$son*Sta/$an# an# 0ons1%atn*+,,2.

#n the ol-wet pore, water-based &P'( gelwll be formed n the center of the pore

$he )olume of the gel reduced due tosyneress *the acrylamde group hydroly+edand reacts wth the d)alent catons

$he remanng gel wll block the flow of thewater more than the ol because the ol canflow along the pore surface


5/19

September 11-12,


Figu%+3 G$ on th 4nt% o5 th 6o%

%#u4s 6%ma1i$it7 o5 !at% mo% than

6%ma1i$it7 o5 oi$

(Ni$son*Sta/$an# an# 0ons1%atn*+,,2.

Ge

l

l

"ater

(atr.


6/19

September 11-12,


THE EFFECTS OF "ETTABILITY ON

PERMEABILITY RE&'CTION (CONT8.

#n the water-wet pore, water-based gel

flows along the pore surface

$he resdual ol droplet formed n the centerof the pore restrcts the flow of the water

%el wll be formed between the water layer

and the ol droplet %el reduces both the permeablty of water

and ol


7/19

September 11-12,


Gel

Matri

x

Oil

Water

Figu% 93 G$ 5o%ms 1t!n !at% $a7% an#

oi$ #%o6$t %#u4s 1oth 6%ma1i$it7


8/19

September 11-12,


MOBILITY CONTROL

(oblty rato/

(oblty of the polymer can be mpro)ed

by ncreasng the )scosty of the soluton

o

o

w

w

o

w

k

k

M

==


9/19

September 11-12,


MO&EL

menson/ 11 cm . 34 cm . 003 cm

Pore s+e/ 50 to 230 m 6oordnate number/ to 4

Pore )olume/ 12 ml

'bsolute permeablty/ 27 Porosty/ 408

"ettablty/ "ater wet


10/19

September 11-12,


Figu% :3 Mi4%omo#$


11/19

September 11-12,


METHO&OLOGY

Polymer solutons wth )scosty of 20 cp and 34 cpare prepared by dssol)ng 1000 ppm and 2000 ppm

polyacrylamde n 1000 ppm 9a:and 200 ppm 6r2: $he model s saturated wth brne *1000 ppm 9a: at

04 ml;mn

l s n


12/19

September 11-12,


METHO&OLOGY (CONT8.

Polymer gel soluton of 20 cp s n


13/19

September 11-12,


RES'LTS AN& &ISC'SSIONS

$ype of fluds Brne l Polymer 1 Polymer 2

6oncentraton *ppm 1000 - 1000 2000

>scosty *cp 10 3 20 34

Permeablty * 27 205 574 131

#n


14/19

September 11-12,


RES'LTS AN& &ISC'SSIONS (CONT8.

"ater-based polymer flows along the poresurface as wettng phase, water

$here are areas naccessble to gel solutonof 20 cp *moblty rato of 035

l can flow easer n these areas comparedto water *permeablty of ol s hgher

$hese areas can be penetrated by gelsoluton of 34 cp, whch s more )scous*moblty rato of 045


15/19

September 11-12,


Figu% -3 Po$7m% 5$o!s a$ong th su%5a4 as

!tting 6has* !at%

(atr.Polymer gel

l

?3 m


16/19

September 11-12,


Figu% ;3 Ina44ssi1$ %gion o5 6o$7m% o5 9< 46

#naccessble regon

of the polymer of 20

cp

"ater

l

Polymer flowsn water

channel

(atr.

120 m


17/19

September 11-12,


Aegons preferred

by ol penetrated by

polymer ha)ng

better moblty rato

*045

l

Polymer of 34 cp

(atr.

"ater

channel

120 m

Figu% =3 Rgions 6%5%%# 17 oi$ 6nt%at# 17

6o$7m% o5 ;- 46


18/19

September 11-12,


CONCL'SIONS

"th mpro)ement n the moblty rato, gel

soluton can penetrate nto pores wth

hgher ol permeablty, thus mpro)ng theeffcency of gel emplacement

l n the pores wth hgher ol permeablty

can be penetrated by gel soluton of bettermoblty rato


19/19

September 11-12


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polymer gel-2-eng.ppt