GasTank

Gas Tankfor Windows

Gas Tankfor Windows

SiriusPetroleum Software

SiriusPetroleum Software

GasTank

GasTank uses reservoir pressure and produced volumes of gas plus liquids from individual

wells and determines the IGIP using volumetric, planimetric and material balance methods.

Results are summarised by well, group, pool, lease and company.

GasTank, Sirius Petroleum Software 3

GasTankAgenda

• Well data

• Pool data

• Lease data

• Gas analysis data

• Special Features, System Options, Methods and Correlations

• Output Reports and Graphs

• Demo

• Questions


Well Data

• Wells are defined with a pool, group and a lease.

• Basic Data: Well name, UWI, group and lease.

• Volumetric Data: Drainage area, netpay, porosity, water saturation.

• Material Balance Data: Pressure and production history.


Well Data


Volumetric Data


Material Balance Data


Analysis Options


Analysis Results


Analysis Results


Pool Data

• Basic Data: Pool name, Field name, and gas analysis name.

• Reservoir Data: Current pressure, formation temperature, and abandonment pressure, rock and water compressibility.

• Planimetric data: average porosity, average water saturation, contour value and contour areas.


Pool – General Data


Pool – Reservoir Data


Pool – Planimetric Data


Pool - Contour Data


Lease Data

• Basic Data: Lease name or number, number of wells in lease, working interest for each company.


Lease Data


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.


Gas Analysis


GasTankSpecial Features

• Data Selection

– Fluid options: gas only, or total fluid (gas+liquid)

– Data selection: all points, all selected points, or all selected by type.

• Analysis Methods

– Tank type, P/z versus Cumulative production

– Full Material Balance, Pressure method

– Full Material Balance, IGIP method

– Full Material Balance, Havlena & Odeh (1963-64) method

• Contour Area Methods– Gauss-Green method

• Bulk Volume Methods– Trapezoid, Pyramid, Combination, Simpson's


System Options


Correlations


Planimetric Methods


Output, Reports and Graphs

• Diagram of results

• Numerous reports– well, pool, group, lease, company, etc.

• Numerous graphs– well, pool, group, lease, company, etc.


Diagram


Reports


Graphs


P/z AnalysisExample Well Name

Well P/z versus Cumulative Production

UsedBuildupdata

un-UsedBuildupdata

P/ztrendline

P/z

(kP

aa

)

Cumulative Production (se6m³)

0

5000

10000

15000

20000

25000

30000

35000

40000

0

50

10

0

15

0

20

0

25

0

30

0

35

0

40

0


Z-factorExample Pool Name

Pool z-factor versus Pressure

z-fa

cto

r @

10

0 °

C

Pressure (kPaa)

0.80

0.85

0.90

0.95

1.00

0

50

00

10

00

0

15

00

0

20

00

0

25

00

0

30

00

0

35

00

0

40

00

0

Documents

GasTank