EXPLOTACION DEL GAS NATURAL 1 ANALISIS DEL RESERVORIO RESERVORIO
Ejemplo 4.1.Se tiene una prueba isocronal y se esea conocer el potencial el reser!orio y el IPR para los "#toos si"pli$cao% &ones 'lount Gla(e y LIT) Datos: Pr = 1*+,,psi Tr = .,*/0 Tc = 2/0
Prof = 1+-**pies API = 2 S! = *%3
PM = 18,8305 SG = 0,742782152
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EXPLOTACION DEL GAS NATURAL . ANALISIS DEL RESERVORIO RESERVORIO
Método Simplificado.
Pr = 1047 10477 7
Presi resión ón Fon Fondo Pf psia
Difer ferencia nciall Presión!" Mmpsi!"
Cauda audall de Gas MMscfd
10477
0
7815
48,693304
4,817
6009
73,659448
6,296
4865
86,099304
7,377
3978
93,943045
8,08
6188
71,476185
6,281
Pr"e#a Isocro$al %&to'o S(mpl()ca'o 1***)**
1**)**
D(fere$c(al 'e Pres($ Ps(
1*)**
1)**
*)1* 1
1*
1**
*a"'al 'e !as +%%pc',
n=
/1
/4
log q1 − log q 4 log(Pr 2 − Pwf 21 ) − log(Pr 2 − Pwf 2 4 )
P0f1
P0f4
Pr
$
c
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EXPLOTACION DEL GAS NATURAL ANALISIS DEL RESERVORIO RESERVORIO
Qg =C ( P Pr Pres($ 6o$'o P0f ps(a 1*+,, ,41 3**2 +43 -2,4 3144 *** .** 1*** *
D(fere$c( al Pres($ %mps( 1*2%,3, .2 +4%32--* + ,-%32++ 4 43%*22-* + 2-%2+-*+ ,1%+,314 4+%,3,. 2 1*-%1, .2 1*4%,3, .2 1*2%,3, .2
2
Pwf
−
2
)
n
*a"'al 'e as %%scf'
*a"'al 'e as %%scf' IPR *
+%41,
+%41-44-3.
3%.23
3%33,+,*34
,%-,,
,%-4,23-1-
4%*4
4%*,+.+12-+
3%.41
3%11143*3 ,%++34,.3+ 4%,111,1+1 2%*311.34,, 2%1.33.,+,
Nos pone"os !alores arbitrarios 5asta 6ue lle7ue al a7ota"iento total para ar"ar nuestro IPR y eter"inar el AO082)1-99pc)
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EXPLOTACION DEL GAS NATURAL + ANALISIS DEL RESERVORIO RESERVORIO
IPR 1.*** 1**** 4*** Pf0 ps(
3*** +*** .*** * *
1
.
-
+
3
,
/! %%scf'
%&to'o 'e 7o$es 8lo"$t la9e Pr = 10477
Caudal de Gas MMscfd
Mmpsi"#MMscfd
48,693304
4,817
10,11
6009
73,659448
6,296
11,7
4865
86,099304
7,377
11,67
3978
93,943045
8,08
11,63
6188
71,476185
6,281
11,38
Presión Fon Fondo
Diferencial
Pf
Presión"
psia
Mmpsi"
10477
109,767529
7815
DP" # $
4
2
1* 1*
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EXPLOTACION DEL GAS NATURAL ANALISIS DEL RESERVORIO RESERVORIO
%&to'o 'e 8lo"$t la9e 1+)** 1.)**
:;<= 8 *)+,< > 4)12 R? 8 *),
1*)** 4)** Dp/! +Ps(%%pc', +Ps(%%pc',
3)** +)** .)** *)** *
1
.
-
+
3
,
4
*a"'al 'e as +%%pc',
De acuero a los !alores obtenios por la 7r@$ca y el auste lineal A 8 intersecciBn con ee ;a caual 8 *=8*%+3,2 8 = Peniente = Peniente ;nice e turbulencia=84%1421 PR 2
Aq + Bq 2 q
=
2
Pw f = Aq + Bq − Pwf
− A ±
Pres($ 6o$'o P0f ps(a 1*+,, 2+.2 4-4. 3.43 .-2
−
( PR 2 A 2
−
2 2
− Pwf
4 B ( PR 2
)=0 2
Pw f − Pwf
)
2 B
*a"'al 'e as %%scf' IPR * .%.-%2 3%.3 ,%*2
2
1*
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EXPLOTACION DEL GAS NATURAL 3 ANALISIS DEL RESERVORIO RESERVORIO
IPR 1* 2 4 , 3 P0f ps(a
+ . 1 * *
.***
+***
3***
4***
1****
/! %%scf'
Coe$ciente La"inar −
1424T A =
Coe$ciente Turbulencia
−
µ Z 0.472re + S ln
kh
rw
B =
3,161 X 10
−12
−
βγ g ZT
rwh 2
A8 A>';AO0=
Recome$'ac($: E
P pc =706−51.7∗γ g−11.1∗γ g
2
P pr=
Pr
1.***
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Temp. +
Pres. +Ps(, 0 2000 4000 6000 8000 10000 10477 •
730 730 730 730 730 730 730
555 555 555 555 555 555 555
Ppc +Ps(a,
Tpr
651,40625 651,40625 651,40625 651,40625 651,40625 651,40625 651,40625
1,31532 1, 1 ,31532 1, 1 ,31532 1, 1 ,31532 1,31532 1,31532 1,31532
CorrelaciBn e 'rill an 'e77s
Z = A +
1 − A
e
A *%.22+-3 + *%.22+-3 + *%.22+-3 + *%.22+-3 + *%.22+-3 + *%.22+-3 + *%.22+-3 + •
Tpc +
B
+
D
C ∗ P Pr
8 * .%14*,4+ +2. 14%*,,.+ 1-+ 1+2%+.1, 1*1 ,21%4-22 , .2,-%24 23, -2.3%.-+ +,
* *%*2-21* +-2 *%*2-21* +-2 *%*2-21* +-2 *%*2-21* +-2 *%*2-21* +-2 *%*2-21* +-2 *%*2-21* +-2
D *%2,11, ,22 *%2,11, ,22 *%2,11, ,22 *%2,11, ,22 *%2,11, ,22 *%2,11, ,22 *%2,11, ,22
9#too e Lee% Gon(ales y Eain
1 *%42 *%4,. 1%*21 1%--3 1%4. 1%3+*
Ppr 0 3,07028 6,14056 9,21084 12,28112 15,35140 16,08367
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11 -. 1+ 1+4%324+ %*-42422 1%-2..*.* *%.+3 11 -. 1+
*%*,
Pse"'o Pote$c(al Pres($ V(scos('a'
6actor
Ps(a *
*p *
1
.***
*%*1,+
*%2--.
+***
*%*...
*%2,*.
3***
*%*.34
1%1*.2
4***
*%*-*
1%.,23
1****
*%*---
1%+,1.
1*+,,
*%*--2
1%14
P"9
Del m+p,
* 1.-1,*%-* 1 14,1+%+, 1+ .*.22.%3 .*+24.%*4 2, .*+112%.2 *3 .*-2+%.+
ps(cp * .+3-+*31* %. 31,,32%1 ,,,+1+.+4 %2 412+2+4 %+ 414.*.,3* % 12++,2-1 %.
Pse"'o Pote$c(al +*** -** -*** .**
:;<= 8 * *)13<
Del m+p, Ac"m"la' o * .+3-+*31* %. 43+11*13%13+1.++1 . .+,+,-42 4 -.,3,33 4 -+,*13** 2
Del m+p, Ac"m"la' o * .+3%-+*31 *. 43+%11*13 -13+1%.++ 1. .+,%+,-4 24 -.,%3,33 4 -+,*%13* *2
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M ( p ) =0.00002 p
2
+ 0.1617
p
A$al(s(s LIT 1****
1***
Del%+p,-#/!C
1** 1**
1*
1 1
1* /! %%scf'
1**
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Coeficiente %aminar & 'ur(ulento )*) & )+) Coeficiente Coefici ente %aminar %aminar * *, Mmpsi a!"#cp#M a!"#cp#MM Mscfd
164.3435929
Coeficiente 'ur(ulento + Mmpsia!"#cp#MM sia!"#cp#MMscfd
Potenci encia al tra tran nsien siente */F 'rans . Mms fd
Potenci encia al -sta sta(ili ilia ado */F -s t. Mms fd
9.56
9.49
22.77641183
Pres($ 6o$'o P0f ps(a 1*+,, ,41 3**2 +43 -2,4 3144 *
Pse"'o Pote$c(al %mps(C cp -3.-,13.3 1.*+ 2*+ 1323 *
*a"'al 'e as %%scf' IPR * +%,1. 3%+2-4 ,%-,,%2,3%-+ 2%3
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IPR 1.*** 1**** 4***
Pf0 Ps(
3*** +*** .*** * *
.
+
3 /! %%scf'
Ejemplo 4-1a.-
4
1*
1.
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1800 2000
0,016 0,0168
0,826 0,817
136198,547 145713,120
52 5 2227801 56382333
262915383 319297717
263 319
Pse"'o Pote$c(al 14* 14* 13* 13*
:;<= 8 *
1+* 1+* 1.* 1.* 1** 1** %+p, %%ps(Ccp
4* 3* +* .* * *
.**
+**
3**
4**
1*** 1.** 1+** 13**
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n Espesor Per:orao +4%** p Raio e po(o *%- RM Raio e Drene 1***%* R * Porosia *%14 Per"eabilia el Gas 1%.7 Dano e 0or"acion 1,%** S Datos 'e Petro)s(cos Saturacion e a7ua *%3* SM Per"eabilia relati!a al Gas *%. r7 Saturacion irreciual *%. SMi Datos 'e las Perforac(o$es Penetracion e la 'ala *%44* Lp Rp *%*.1 Rc *%*3-
pies pies pies "
pies pies pies
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703 × 10 −6
× k × h × (Pr (P r − Pfw ) Qg = = Mp cd re T × Z × µ × ln( ) − 0.75 + S rw − 703 × 10 × k × h C = re T × ln( ) − 0.75 + S rw 2
2
6
C
-%*-+E -% *-+EK* K*3 3 Pres($ ps( 1*+,, 2+.2 4-4. ,--+ 3.43 .-2 +121 -1+.*2 1*+4 *
V(scos('a cp
*%*- *%*-*%*-. *%**%*.4 *%*. *%*.*%*. *%*14 *%*13 *%*1
1%+2 1%-2 1%.24 1%.*+ 1%113 1%*-4 *%2,4 *%2+. *%2-3 *%24 1
/! %%pc' calc"la'o * 1%-, .%42 +%,* 3%4. 2%3. 1.%++ 13%*4 14%2, .1%1 ..%.*
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Qg =
703 ×10 −6 × k × h × ( m( P )r − m( P ) fw ) re T × ln( ) − 0.75 + S rw
Pres($ 6o$'o P0f ps(a 1*+,, 2+.2 4-4. ,--+ 3.43 .-2 +121 -1+.*2 1*+4 *
Pse"'o Pote$c(al %mps(C cp -.1%-*1.%2 .-4%1 .*2%2 1343%4 1-11%1 234%1 34%. -41%+ 1-,%2 *
/! %%pc' calc"la' o IPR * 1%+ .%24 +%-. %, 3%,1 ,%, 4%32 2%1*%.3 1* 34
= Mpcd
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%&to'o Pse"'o Pote$c(al P ote$c(al 1.*** 1**** 4***
Pres($ f0 +ps(,
3*** +*** .*** * *
.
+
3
/! %%pc'
4
1*
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1048 0
0,016 0,015
0,958 1
0,0323663 0,0337853
5057,76844 4949,53853
%&to'o 'e 8lo"$t la9e 1.*** 1**** 4*** Pres($ f0
3***
19,14 19,56