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Petroleum Engineering 324 Type Curve Analysis of Well Test Data Including Boundary Effects Example 3 — Pressure Buildup Data Exhibiting Boundary Effects Example 3 : Pressure Buildup Data Exhibiting Boundary Effects These data were simulated using the analytical solution for a well centered in a bounded reservoir. Wellbore storage and skin effects are included. Reservoir properties: =0.039 r w =0.198 ft c t =17x10 -6 psi -1 h=69 ft Oil properties: B o =1.136 RB/STB o =0.8 cp Production parameters: p i =5000 psia q o =500 STB/D t p =13630 hr p wf (t=0)=910.592 psia Required : Using the attached plots, you are to perform "type curve" analysis on these data and provide estimates of the following parameters: a. The formation permeability, k. b. The dimensionless wellbore storage coefficient, C D . c. The near well skin factor, s. d. The reservoir drainage area, A.
Transcript of Petroleum Engineering 620 - Texas A&M University · Web viewPetroleum Engineering 324 Type Curve...
Petroleum Engineering 620
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Petroleum Engineering 324
Type Curve Analysis of Well Test Data Including Boundary Effects
Example 3 Pressure Buildup Data Exhibiting Boundary Effects
Example 3: Pressure Buildup Data Exhibiting Boundary Effects
These data were simulated using the analytical solution for a well centered in a bounded reservoir. Wellbore storage and skin effects are included.
Reservoir properties:
=0.039rw=0.198 ftct=17x10-6 psi-1h=69 ft
Oil properties:
Bo=1.136 RB/STBo=0.8 cp
Production parameters:
pi=5000 psiaqo=500 STB/Dtp=13630 hr
pwf(t=0)=910.592 psia
Required:
Using the attached plots, you are to perform "type curve" analysis on these data and provide estimates of the following parameters:
a. The formation permeability, k.
b. The dimensionless wellbore storage coefficient, CD.
c. The near well skin factor, s.
d. The reservoir drainage area, A.
Petroleum Engineering 324
Type Curve Analysis of Well Test Data Including Boundary Effects
Example 3 Pressure Buildup Data Exhibiting Boundary Effects
Cartesian Plot: Early-Time Pressure Data (Example 3 Pressure Buildup Data Exhibiting Boundary Effects)
Petroleum Engineering 324
Type Curve Analysis of Well Test Data Including Boundary Effects
Example 3 Pressure Buildup Data Exhibiting Boundary Effects
Semilog Plot: Pressure Data (Example 3 Pressure Buildup Data Exhibiting Boundary Effects)
Petroleum Engineering 324
Type Curve Analysis of Well Test Data Including Boundary Effects
Example 3 Pressure Buildup Data Exhibiting Boundary Effects
Log-Log Plot: Pressure Drop and Pressure Drop Derivative Data (1 inch x 1 inch)
(Example 3 Pressure Buildup Data Exhibiting Boundary Effects)
Petroleum Engineering 324
Type Curve Analysis of Well Test Data Including Boundary Effects
Example 3 Pressure Buildup Data Exhibiting Boundary Effects
Ansah Type Curve: Pressure Buildup in a Bounded (Closed) Reservoir System (1"x1" format)
Petroleum Engineering 324
Type Curve Analysis of Well Test Data Including Boundary Effects
Example 3 Pressure Buildup Data Exhibiting Boundary Effects
Bourdet-Gringarten Type Curve: Dimensionless Pressure and Pressure Derivative Functions
Petroleum Engineering 324
Type Curve Analysis of Well Test Data Including Boundary Effects
Example 4 Oil Well in a Geologically Complex System
Example 4: Oil Well in a Geologically Complex System
These data were simulated to mimic the response of an oil well in a geologically complex system. Wellbore storage and skin effects are included.
Reservoir properties:
=0.30rw=0.28 ftct=36.7x10-6 psi-1h=59 ft
Oil properties:
Bo=1.625 RB/STBo=0.39 cp
Production parameters:
pi=2000 psiaqo=1550 STB/Dtp=120 hr
pwf(t=0)=1859.91 psia
Required:
Using the attached plots, you are to perform "type curve" analysis on these data and provide estimates of the following parameters:
a. The formation permeability, k.
b. The dimensionless wellbore storage coefficient, CD.
c. The near well skin factor, s.
c. The distance to the flow obstruction (fault), L.
Petroleum Engineering 324
Type Curve Analysis of Well Test Data Including Boundary Effects
Example 4 Oil Well in a Geologically Complex System
Cartesian Plot: Early-Time Pressure Data (Example 4: Oil Well in a Geologically Complex System)
Petroleum Engineering 324
Type Curve Analysis of Well Test Data Including Boundary Effects
Example 4 Oil Well in a Geologically Complex System
Semilog Plot: Pressure Data (Example 4: Oil Well in a Geologically Complex System)
Petroleum Engineering 324
Type Curve Analysis of Well Test Data Including Boundary Effects
Example 4 Oil Well in a Geologically Complex System
Horner Semilog Plot: Pressure Data (Example 4: Oil Well in a Geologically Complex System)
Petroleum Engineering 324
Type Curve Analysis of Well Test Data Including Boundary Effects
Example 4 Oil Well in a Geologically Complex System
Log-Log Plot: Pressure Drop and Pressure Drop Derivative Data (1 inch x 1 inch)
(Example 4: Oil Well in a Geologically Complex System)
Petroleum Engineering 324
Type Curve Analysis of Well Test Data Including Boundary Effects
Example 4 Oil Well in a Geologically Complex System
Log-Log Plot (Effective Shut-in Time): Pressure Drop and Pressure Drop Derivative Data (1 inch x 1 inch)
(Example 4: Oil Well in a Geologically Complex System)
Petroleum Engineering 324
Type Curve Analysis of Well Test Data Including Boundary Effects
Example 4 Oil Well in a Geologically Complex System
Log-Log Plot (Drawdown Data): Pressure Drop and Pressure Drop Derivative Data (1 inch x 1 inch)
(Example 4: Oil Well in a Geologically Complex System)
Petroleum Engineering 324
Type Curve Analysis of Well Test Data Including Boundary Effects
Example 4 Oil Well in a Geologically Complex System
Bourdet-Gringarten Type Curve: Dimensionless Pressure and Pressure Derivative Functions
Petroleum Engineering 324
Type Curve Analysis of Well Test Data Including Boundary Effects
Example 4 Oil Well in a Geologically Complex System
Stewart Type Curve: Well in an Infinite-Acting Reservoir System with a Single or Multiple Sealing Faults. (1"x1" format)
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