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Gas Supply Managerfor Windows
Gas Supply Managerfor Windows
SiriusPetroleum Software
SiriusPetroleum Software
Gas Supply ManagerDescription
GSM generates a sales gas forecast by allocating the demand of multiple contracts among several pools according to their deliverability. The gas
supply from each pool is determined by deliverability decline.
Gas Supply ManagerDescription cont.
The principal use of the program is to generate a multi-pool gas forecast based on each pool’s deliverability and the total gas contract demand including demand from direct sales.
The deliverability of each pool is determined using standard deliverability decline analysis.
Pool pressure is calculated based on the cumulative production and the Initial Gas in Place.
Gas Supply ManagerApplication
Knowledge of corporate supply and demand is critical in managing multiple gas properties. The applications are:
–Identify gas contract short falls.–Identify direct sale potential.–Investigate the impact of infill drilling.–Generate corporate gas supply and demand forecast.–Determine economic reserves.
GSM, Sirius Petroleum Software 5
GSMAgenda
• Pool data
• Contract data
• Direct sales data
• Buyer data
• Gas analysis data
• Special Features, System Options, Methods and Correlations
• Output Reports and Graphs
• Demo
• Questions
GSM, Sirius Petroleum Software 6
Pool Data
• Basic Data: Pool name, Gas Analysis name, Contract name, deliverability method.
• Reservoir Data: Current pressure, formation temperature, and abandonment pressure, rock and water compressibility.
• Abandonment Data: Reservoir pressure, Recovery factor, Deliverability rate.
GSM, Sirius Petroleum Software 7
Pool Data
GSM, Sirius Petroleum Software 8
Contract Data
• Basic Data: Contract name, gas contract buyer, contract rate, maxday and obligation factor.
• Table of load factor and maxday relief.
GSM, Sirius Petroleum Software 9
Contract Data
GSM, Sirius Petroleum Software 10
Buyer Data
• Basic Data: Contract name, gas contract buyer, contract rate, maxday and obligation factor.
• Table of load factor and maxday relief.
GSM, Sirius Petroleum Software 11
Buyer Data
GSM, Sirius Petroleum Software 12
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.
GSM, Sirius Petroleum Software 13
Gas Analysis
GSM, Sirius Petroleum Software 14
GSMSpecial Features
• Capability to handle up to 50 pools, 10 gas contracts and 10 gas buyers.
• Build in gas material balance calculation to determine current reservoir pressure.
• Includes full gas PVT calculations to determine gas properties.
• Include several different gas correlations.
• Individual pool abandonment criteria.
• Includes gas contract parameters to accurately model, demand, maxday, maxday relief, obligation factor and minday demand.
GSM, Sirius Petroleum Software 15
System Options
GSM, Sirius Petroleum Software 16
Correlations
GSM, Sirius Petroleum Software 17
Output, Reports and Graphs
• Summary of results
• Numerous reports– pool, contract, buyer and total.
• Numerous graphs– pool, contract, buyer and total.
GSM, Sirius Petroleum Software 18
Summary of Results
GSM, Sirius Petroleum Software 19
Summary of Results
GSM, Sirius Petroleum Software 20
Summary of Results
GSM, Sirius Petroleum Software 21
Summary of Results
GSM, Sirius Petroleum Software 22
Reports
GSM, Sirius Petroleum Software 23
Graphs
GSM, Sirius Petroleum Software 24
Gas Analysis GraphERCB Example A-1
Simple Gas Analysis
Mo
le f
rac
tio
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 Hydrocarbons
GSM, Sirius Petroleum Software 25
Pool PressurePool #1, My Contract
Pool P/z Pressure Performance
Depletion P/z Pressure (kPaa) Depletion Pressure (kPaa)
P/z
Pre
ss
ure
(k
Pa
a)
Pre
ss
ure
(k
Pa
a)
Cumulative Raw Gas Production (se6m³)
0
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
11000
12000
0
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
11000
12000
0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.0 100.0
GSM, Sirius Petroleum Software 26
Pool RecoveryPool #1, My Contract
Pool Pressure and Cumulative Recovery Forecast
Pool Pressure (kPaa) Recovery (fraction)
Po
ol P
res
su
re (
kP
aa
)
Cu
mu
lati
ve
Re
co
ve
ry (
fra
cti
on
)
Forecast year
0
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
11000
12000
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1 2 3 4 5 6 7 8 9 10
GSM, Sirius Petroleum Software 27
Pool ForecastPool #1, My Contract
Pool Production Forecast
Deliverability(se³m³/d)
Contract(se³m³/d)
Direct (se³m³/d) Total (se³m³/d)
Ra
w G
as
Flo
w R
ate
(s
e³m
³/d
)
Forecast year
0
10
20
30
40
50
60
70
80
90
100
1 2 3 4 5 6 7 8 9 10 11
GSM, Sirius Petroleum Software 28
Contract ForecastMy Contract
Contract Production Forecast
Deliverability(se³m³/d)
Max Day Sales(se³m³/d)
Contract Sales(se³m³/d)
Min day Sales(se³m³/d)
Sa
les
Ga
s F
low
Ra
te (
se
³m³/
d)
Forecast year
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
1 2 3 4 5 6 7 8 9 10 11