gaswell optimization
DESCRIPTION
GasWell Optimization. - PowerPoint PPT PresentationTRANSCRIPT
GasWellOptimizationGasWell
Optimization
SiriusPetroleum Software
SiriusPetroleum Software
GasWell Optimization
GasWell is an easy to use package used for optimizing the performance of a gas well. Sandface inflow, tubing performance and wellhead conditions are used to maximize
production. With this package the user can investigate the flow improvement after
stimulation, increasing the wellbore, and lowering wellhead pressure. Up to six different wellbore sizes can be investigated in one run.
GasWell, Sirius Petroleum Software 3
GasWell OptimizationAgenda
• Well data
• Pool data
• Gas analysis data
• Special Features, Methods and Correlations
• Output Reports and Graphs
• Demo
• Question
GasWell, Sirius Petroleum Software 4
Well Data
• Wells are defined within a pool, group, and a lease.
• Well data includes: Elevations, Perforations, wellhead conditions.
• Deliverability: AOF parameters.• Directional Drilling Survey.• Wellbore: Tubing, Casing or Annular.
GasWell, Sirius Petroleum Software 5
Well Data
GasWell, Sirius Petroleum Software 6
Well Deliverability
GasWell, Sirius Petroleum Software 7
Well Directional
GasWell, Sirius Petroleum Software 8
WellBore
GasWell, Sirius Petroleum Software 9
Well Working Interests
GasWell, Sirius Petroleum Software 10
Well Elevations
GasWell, Sirius Petroleum Software 11
Well Elevations
GasWell, Sirius Petroleum Software 12
Well Perforations
GasWell, Sirius Petroleum Software 13
Pool Data
• Reservoir Data: Initial Pressure, Formation Temperature, and Datum Elevation.
• Abandonment: Pressure
GasWell, Sirius Petroleum Software 14
Pool Data
GasWell, Sirius Petroleum Software 15
Gas Analysis Data
• Full Gas Analysis: 12 Component gas analysis including N2, CO2 and H2S, C7
+ properties (Molecular Weight, Specific Gravity)
• Simple Gas Analysis: 3 non-HC including N2, CO2 and H2S, and a total gas specific gravity.
GasWell, Sirius Petroleum Software 16
Gas Analysis
GasWell, Sirius Petroleum Software 17
Gas Analysis11-27 Turner Valley Formation
Detailed Gas Analysis
Mo
le
fra
ctio
n
Components
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
0.50
0.55
0.60
0.65
0.70
0.75
0.80
0.85
0.90
0.95
1.00
N2 C02 H2S C1 C2 C3 iC4 nC4 iC5 nC5 C6 C7+
GasWell, Sirius Petroleum Software 18
GasWellSpecial Features
• Well Deliverability– Simplified (Rawlings
and Schellhardt(1936)
– LIT-Pressure
– LIT-Pressure Squared (Houpert, 1959)
– LIT-Pseudo Pressure (Al-Hussainy, 1965)
– Gas IPR (Aronofsky and Jenkins, 1954)
• Bottomhole Pressure– Average Density
method.
– Average Temperature and Average z-factor method.
– Sukkar and Cornell method.
– Cullender and Smith (1959)
GasWell, Sirius Petroleum Software 19
GasWellSpecial Features cont.
• True vertical depth– Segmented
– Tangential
– Average Angle
– Radius of Curvature
– Minimum Curvature
• Wellbore– Tubular flow
– Casing flow
– Annual flow
– Size different sizes
GasWell, Sirius Petroleum Software 20
Calculation Methods
GasWell, Sirius Petroleum Software 21
Correlations
GasWell, Sirius Petroleum Software 22
Output, Reports and Graphs• Table of results for current time step• Diagram of results• Table of results by component
– Deliverability, AOF, Production, Compression, Gas analysis, Heating Value
• Numerous reports– Well, pool, group, lease, company, etc.
• Numerous graphs
GasWell, Sirius Petroleum Software 23
Reports
GasWell, Sirius Petroleum Software 24
Graphs
GasWell, Sirius Petroleum Software 25
Graphical Results10-10 Example Well, Example Pool
Wellbore Gas Flow @Wellhead=4000.0 kPaa
Ga
s F
low
Ra
te (
se
³m³/
d)
Tubing ID (mm)
0
20
40
60
80
100
120
140
160
180
200
0
10
20
30
40
50
60
70
80
90
10
0
110
12
0
13
0
14
0
15
0
10-10 Example Well, Example PoolWell Sandface IPR @Wellhead=4000.0 kPaa
Inflow
20.000 mm
40.000 mm
60.000 mm
80.000 mm
100.000 mm
140.000 mm
Sa
nd
fac
e P
res
su
re (
kP
aa
)
Gas Flow Rate (se³m³/d)
0
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
11000
12000
0
20
40
60
80
10
0
12
0
14
0
16
0
18
0
20
0