A new concept of enhanced SAGD process by adding intermittent stream-stimulation on lower horizontal production-well (SAGD ISSLW)

Kyuro Sasaki, Satoshi Akibayash, Masashige Kato, Kenji Ono

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

An enhanced SAGD process named SAGD-ISSLW for heavy oil recovery has been studied by experi- ments using 2-dimensional scaled physical-models, video and infra-red visualization techniques. In the usual SAGD process, oil production rate increases with increasing vertical well spacing between two horizontal wells, but the lead time to start oil production by gravity drainage is longer at the initial stage. The new process uses a lower horizontal well with both functions of intermittent steam-injection and continuous oil-production instead of the usual SAGD production-well. Meanwhile, like in the usual SAGD, the steam is also injected continuously through the upper well as same as the usual SAGD. The benefits of the new concept reported in the paper are quick buildup of warm steam chamber and higher oil production rate as compared to the usual SAGD process. The process also has advantages for setting longer vertical well spacing and keeping temperature of flowing heavy-oil in the surface-drilled SAGD wells by the single well configuration.
Original languageEnglish
Title of host publicationProceedings of the Fifteenth World Petroleum Congress
Subtitle of host publicationWorld Petroleum Congress
Publisherwiley
Pages511-513
Number of pages3
Volume2
ISBN (Print) 0471975419
Publication statusPublished - Oct 13 1998
Event15th World Petroleum Congress - Beijing, China
Duration: Oct 16 1997Oct 19 1997

Conference

Conference15th World Petroleum Congress
CountryChina
CityBeijing
Period10/16/9710/19/97

All Science Journal Classification (ASJC) codes

  • Fuel Technology
  • Earth and Planetary Sciences(all)
  • Energy(all)

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