Material balance for a bottom-water-drive gas reservoir
A material balance is developed for a gas reservoir in which the rising gas-water contact remains horizontal. The time-integrated cumulative water influx is introduced, which for numerical computations is sometimes more advantageous than the van Everdingen and Hurst integral. Based on the equations developed, material balance calculations of the past history of an actual gas field are carried out to calculate the water influx. The strength of the estimated radial, limited aquifer, which has to supply the water for the influx, is determined. It appears that the strength decreases with time and approaches asymptotically a limiting value. Some possible reasons for this decrease are mentioned. If the strength is taken as constant and equal to the limiting value, very small deviations from the past pressures occur. With the same value for the strength of the aquifer, the future behavior of the gas reservoir is computed assuming constant gas production rate and no water production.
- OSTI ID:
- 5958243
- Report Number(s):
- CONF-7205125-
- Journal Information:
- Soc. Pet. Eng. AIME, Pap.; (United States), Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Vol. SPE-3724; ISSN SEAPA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
030300* -- Natural Gas-- Drilling
Production
& Processing
AQUIFERS
COMPRESSIBILITY
ENERGY SOURCES
ENGINEERING
FLUID FLOW
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
HYDROGEN COMPOUNDS
MATHEMATICS
MECHANICAL PROPERTIES
NATURAL GAS
NATURAL GAS WELLS
NUMERICAL ANALYSIS
OXYGEN COMPOUNDS
RECOVERY
RESERVOIR ENGINEERING
RESERVOIR PRESSURE
WATER
WELLS