Optimisation of steam and gas push to prevent water influx from a top-water-bearing area into a vapour chamber

Sunghoon Chung, Joe M. Kang, Changhyup Park, Baehyun Min, Ilsik Jang

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


This paper presents how to produce bitumen efficiently from the reservoir with top-water-bearing zone. The impact of naturally occurring and/or co-injected non-condensable gas on bitumen production is investigated using numerical studies. Non-condensable gas can improve energy efficiency in two ways: reduction of dynamic vacuum effect and blockage of direct contact of steam chamber and top water layer. A strategic operation mitigating the groundwater influx is presented. An artificial neural network (ANN) model adjusts both pressures of steam and non-condensable gas injected as well as the amount of non-condensable gas. The results show the optimised scheme of steam and gas push (SAGP) can improve the energy efficiency of thermal recovery by maintaining the pressure within the steam chamber enough to prevent excessive water influx, not to obstruct steam chamber expansion in early production stage.

Original languageEnglish
Pages (from-to)304-326
Number of pages23
JournalInternational Journal of Oil, Gas and Coal Technology
Issue number3
StatePublished - 2019

Bibliographical note

Funding Information:
This study has been worked with the support of a research grant of Kangwon National University, Korea in 2017.

Publisher Copyright:
Copyright © 2019 Inderscience Enterprises Ltd.


  • Energy efficiency
  • Gas push
  • Oil sands
  • SAGP
  • Steam
  • Steam chamber
  • Top-water-bearing zone


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