Conference paper

ENHANCED RECOVERY FROM WATER-DRIVE GAS RESERVOIRS

Zaki Bassiouni

Abstract

Ultimate recovery from water—drive gas reservoirs is governed primarily by the reservoir heterogeneity, residual gas saturation behind the water front, and by relatively high—pressure free gas abandoned updip of the highest perforation. Typical recovery from these reservoirs ranges between 35 and 75% of gas in place. Gas recovery can be enhanced using the »co — production« technique, in this process, as the downdip wells begin to water out, they are converted to high-rate water producers while the updip gas wells maintain gas production. If enough water is produced, the water influx can be halted or at least slowed down, allowing updip wells to deplete the free gas zone to lower pressure. Also, bypassed gas may regain mobility as pressure is lowered in the water-swept zone. Material balance calculations and numerical simulation arc used to support the technical feasibility of co—production. The technical as well as the economic feasibility is demonstrated using actual reservoirs.

Keywords

Ultimate recovery; Gas reservoirs; Water drive mechanism

Hrčak ID:

24721

URI

https://hrcak.srce.hr/24721

Publication date:

4.12.1990.

Article data in other languages: croatian

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