您好,我想请教您一个关于CMG 泡沫驱的问题。
下面的文件是的CMG STARS 模块中自带的泡沫的例子,这个例子中主要通过考虑了三个不同的区域,设定了不同的气相相渗内插系数来修正气体相对渗透率。
我的问题是(1)例子中的三个区域是用那个值进行划分的?是不是用例子中利用关键字*IFTTABLE给出的表面活性剂的摩尔分数和界面张力的值进行划分的,如果是的话,不同区域的临界值是哪个数?
(2)关键字*FMSURF *FMCAP *FMOIL *FMMOB *EPSURF *EPCAP *EPOIL 为泡沫的内插参数,这些参数是不是用来计算关键字*DTRAPW给出的值?
万分感谢!
** ============== ROCK-FLUID PROPERTIES ======================
** This simulation incorporates foam mobility reduction in
** relative permeability effects which are region dependent.
** ---------------------------------------------------------------
*KRTYPE *CON 1 ** Standard bed permeability
*MOD 1 1 1:2 = 2 ** Higher perm commumication path
6 1 1:2 = 2 ** Higher perm commumication path
1:9 1 3 = 2 ** Higher perm commumication path
*RPT 1 ** First rock type for standard permeability zones
** ---------------------------------------------------------------
** Interpolation between 3 sets: zero, weak and strong foam curves
** Capillary number calculation is based on aqueous SURFACT IFT
** specified at 2 temperatures and 2 SURFACT concentrations.
*INTCOMP 'SURFACT' *WATER
*INTLIN
*IFTTABLE ** aq mole frac IFT
*TEMP 10.0
0.0 13.
0.3 13.
*TEMP 320.0
0.0 13.
0.3 13.
*FMSURF 1.875E-4
*FMCAP 1.0E-4
*FMOIL 0.5
*FMMOB 50
*EPSURF 1.0
*EPCAP 1.0
*EPOIL 1.0
** Set #1: No foam, corresponding to no SURFACT
** ----------------------------------------------
*KRINTRP 1
*DTRAPW 1.0 ** no mobility reduction
*SWT ** Water-oil relative permeabilities
** Sw Krw Krow
** ----- ------- -------
0.0930000 0.0 1.00000 0.0
0.1500000 1.7000E-4 0.8400000 0.0
0.2000000 8.0000E-4 0.7100000 0.0
0.2500000 0.0024000 0.5800000 0.0
0.3000000 0.0061000 0.4650000 0.0
0.4000000 0.0250000 0.2780000 0.0
0.5000000 0.0760000 0.1360000 0.0
0.6000000 0.1800000 0.0410000 0.0
0.6500000 0.2600000 0.0130000 0.0
0.7000000 0.3600000 0.0110000 0.0
0.8000000 0.5700000 0.0060000 0.0
0.9000000 0.7500000 0.0 0.0
1.00000 1.00000 0.0 0.0
*SLT *NOSWC ** Liquid-gas relative permeabilities
** Sl Krg Krog
** ---- ------- ------
0.1500000 1.00000 0.0 0.0
0.4000000 0.9900000 1.0000E-4 0.0
0.4200000 0.9850000 8.0000E-4 0.0
0.4500000 0.9800000 0.0070000 0.0
0.5000000 0.8500000 0.0260000 0.0
0.5500000 0.6900000 0.0550000 0.0
0.6000000 0.5400000 0.0900000 0.0
0.7000000 0.2870000 0.1860000 0.0
0.8000000 0.1140000 0.3310000 0.0
0.9000000 0.0220000 0.5700000 0.0
0.9500000 0.0045000 0.7600000 0.0
1.00000 0.0 1.00000 0.0
** Override critical saturations on table
*SWR 0.15
*SORW 0.00
*SGR 0.05
*SORG 0.16
** Set #2: Weak foam, corresponding to intermediate SURFACT concentration
** -----------------------------------------------------------------------
*KRINTRP 2 *COPY 1 1 ** copy from first set, then overwrite
*DTRAPW 0.4 ** weak foam inverse mobility reduction factor (MRF=2.5)
** Override critical saturations on table
*SWR 0.15
*SORW 0.00
*SGR 0.05
*SORG 0.16
*KRGCW 0.4
** Set #3: Strong foam, corresponding to high SURFACT concentration
** -----------------------------------------------------------------
*KRINTRP 3 *COPY 1 1 ** copy from first set, then overwrite
*DTRAPW 0.02 ** strong foam inverse mobility reduction factor (MRF=50)
** Override critical saturations on table
*SWR 0.15
*SORW 0.00
*SGR 0.05
*SORG 0.16
*KRGCW 0.02