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ECON.DOC
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1987-12-17
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ECON is an economics program written for the evaluation of oil and gas
projects. The program makes its evaluations as a before tax case.
The following is a description of the input data in program(ECON.DAT)
shown on the disk. It is recommended that you read SPE paper No.16483 title,
APPLICATION OF MICROCOMPUTERS TO THE ECONOMIC EVALUATION OF THE SECONDARY
RECOVERY OF INFILL DRILLING BY S.A. El-Feky, United Arab Emirates U.
Project title, format(36A2)
PETROLEUM ENGR. RUN NO. 2
Additionl title, format (36A2)
ECONOMIC ANALYSIS
Starting year of evaluation, Month, No. of production data points.
Year Mo No. data pts., format(3I4)
1987 1 19
Type of production, 0.0 for oil, 1.0 for gas, format(F5.0)
0.0
Read the paper for an understanding of well and other cost.
Well Cost($) Other Cost($) format(2F15.0)
418500000. 350000000.0
Monthly operating cost($/month) and annual inflation rate(fraction/year)
Opr Cost($)/Mo. Infl. Rate(frac./Yr) format(2F15.2)
1750000.0 0.12
Number of long term investments. (maximum = 9)
No. format(I1)
0
If the above, (long term investments) is greater than zero and well workovers
are being considered then you will need to put in the data for workovers.
There is not an example shown but the required information is:
Year of expense(Year), well cost($), and other cost($) format(I5,2F10.0).
Oil reserves(MBO), Oil production rate(BOPD), Annual decline rate(Frac/Yr)
Produced gas oil ratio(scf/bbl),Years of constant production(years).
Delay in oil sales(months, Maximum is 24 months) format(2F15.0,4F10.2)
Oil Resv Oil Rate Decl Rate GOR Const Prod Sales Del
(MBO) (BOPD) (Frac/Yr) (SCF/B) (years) (months)
1002000.0 124000.0 0.30 25.0 1.0 0.0
The following does not have example numbers but is used when a gas study
is made. It takes the place of the oil case shown above.
Gas reserves(MMCF), Gas production rate(MCF/D), Condensate rate,(BBLS/MCF)
Annual decline rate(Frac/Yr), Years of constant porduction(Years),
Delay in oil sales(months, Maximum is 24 months) format(2F15.0,4F10.2)
Oil Resv Oil Rate Cond Rate Decl Rate Const Prod Sales Del
(MBO) (BOPD) (BBL/MCF) (Frac/Yr) (years) (months)
Starting prices, Oil($/Bbl), Gas($/Mcf), Escalation rate (Decimal/Year).
OIL GAS Escalation
$/Bbl $/Mcf Dec/Yr format(3F10.2)
16.0 1.0 0.05
Annual oil production history and forecast in barrels per year.
Bbls/Yr format(F15.0)
124000.0
248000.0
248000.0
248000.0
248000.0
245000.0
240000.0
235000.0
215000.0
205000.0
150000.0
74000.0
70000.0
62000.0
45000.0
35000.0
30000.0
30000.0
30000.0
When the executable version of Econ (ECON.EXE) is loaded, a message
appears that says:
File name missing or blank - please enter name.
UNIT 5? (This is the input file, example, enter ECON.DAT)
UNIT 6? (This is the output file, example, enter ECON.OUT)
When the program has completed a run. The following message appears:
Stop - Program terminated.
The above message indicates you should have generated an output file
such as for example FLOW.OUT.
m terminated.