Download - Analisis Del Tipos de Curva
-
8/13/2019 Analisis Del Tipos de Curva
1/17
Type Curve Analysis of Well Test
Datos para la Identificacion de losEfectos del Limite
-
8/13/2019 Analisis Del Tipos de Curva
2/17
1a Distance to Fault from "Stewart"
Type Curve AnalysisTime Match Point
Pressure derivative Match Point
L= 0.0002637
kct
tMP
tD/LD2
MP
k =141.2qB
hpwD
'MP
p'MP
-
8/13/2019 Analisis Del Tipos de Curva
3/17
-
8/13/2019 Analisis Del Tipos de Curva
4/17
1b Distance to non-sealing Fault
"Abbaszadeh-Cinco"
Time Match Point
Pressure derivative Match Point
L= 0.0002637 k
ct
tMP
tD/LD2 MP
k =141.2qB
hpwD
'MP
p'MP
-
8/13/2019 Analisis Del Tipos de Curva
5/17
-
8/13/2019 Analisis Del Tipos de Curva
6/17
-
8/13/2019 Analisis Del Tipos de Curva
7/17
Que es lo vamos a aprender?
Ecuacion de la Difusividad Radial
Dimensionless variables (factores de conversion)
Condiciones Initiales y de Limite (outer, inner)
Soluciones, varias aproximaciones, derivativa del
well testing
Superposicion en el espacio y tiempo
Build-up analysis
Time regions
Plots and metodos
Parametros que se pueden obtener
-
8/13/2019 Analisis Del Tipos de Curva
8/17
Radial diffusivity eq
Dimensionless Radius
Dimensionless Time
Dimensionless Pressure
Dchttt
Dchrrr
Dchi pppp
t
p
k
c
r
pr
rr
t
1
D
D
D
DD
DD t
p
r
pr
rr
1
-
8/13/2019 Analisis Del Tipos de Curva
9/17
1. Dimensionless Radius
2. Dimensionless Time
3. Dimensionless pressure
Dchttt
Dchrrr
wch rr
kcrt tw
ch
2
kh
Bqpch
2
Dchi pppp
-
8/13/2019 Analisis Del Tipos de Curva
10/17
hr
0002637.0
1
md
psi
1cpft
1
2
psi007082.0
1
ftmd
cpday
bbl
2
1
tcr
kt
tw
D
20002637.0
1 md = 9.869233 10-16 m2
1 bbl = 0.1589873 m3
1 psi = 6894.757 Pa
1 ft = 0.3048 m1 cp = 0.001 Pa s
1 day= 243600 s
1 hr = 3600 s
ppBq
khp iD
007082.0 pp
Bq
khp iD
2.141
1or
-
8/13/2019 Analisis Del Tipos de Curva
11/17
Infinite-Acting
D
D
D
DD
DD t
p
r
prrr
1
0),(0
DtDDD rtp
11
DrD
DD
r
pr Inner boundary: constant rate
initial
0, DrDDD trp
No outer boundary, virgin pressure "at very far"
Cylindrical solution
Line source solution (Exp Integral)
Log approximation
-
8/13/2019 Analisis Del Tipos de Curva
12/17
Other outer boundary conditions
No flow: circular shape
No flow: rectangular area (MBH method)
Constant pressure outer boundary
0
eDD rrD
DD
r
pr
0),( eDD rrDDD
trp
0
eDD xxD
D
x
p
-
8/13/2019 Analisis Del Tipos de Curva
13/17
-
8/13/2019 Analisis Del Tipos de Curva
14/17
Build-up analysis
Type curve Concept Derivative
Match
Time regions
Wellbore storage distortion Middle time:
Line source solution (Exp Integral solution)
Log approximation
Superposition in time
MDH (k, s)
Horner (k,s, p*)
Late time Modified Muskat
-
8/13/2019 Analisis Del Tipos de Curva
15/17
Distance to fault in otherwise infinite
acting reservoir
Horner analysis: double slope (for fault)
Type Curve Analysis (derivative) (for fault)
Average pressure (in not infinite acting)
Horner+MBH
Modified Muskat
-
8/13/2019 Analisis Del Tipos de Curva
16/17
-
8/13/2019 Analisis Del Tipos de Curva
17/17