Steam drive correlation and prediction
Studies of the steam injection processes in physical models and with field steam-drive projects support the concept that the oil produced is usually proportional to the steam zone size. Exceptions to this behavior can occur when a small amount of heat is applied to reservoirs in which a substantial amount of primary oil remains, or when initial oil saturation is low. Results of laboratory experiments comparing steam soaks and steam drive are presented. These experiments add to evidence that ultimate thermal efficiency in both processes is largely dependent upon reservoir and steam properties, and project life. Application of this principle often leads to the conclusion that heat can effectively be injected at a high rate initially. A mathematical model using a simple energy balance is developed to compare the results of experimental model studies and field-steam drive projects with the steam zone concept. This model uses basic reservoir parameters and steam properties together with Mandl's theory to calculate steam-zone size and to predict ultimate oil/steam ratio. Results correlate well with field experience and suggest that the model is a useful screening tool for estimation of oil/steam ratio from average reservoir properties.
- Research Organization:
- Shell Oil Co
- OSTI ID:
- 6621169
- Report Number(s):
- CONF-750924-
- Journal Information:
- Soc. Pet. Eng. AIME, Pap.; (United States), Vol. SPE-5572; Conference: 50. annual fall meeting and exhibition, Dallas, TX, USA, 28 Sep 1975
- Country of Publication:
- United States
- Language:
- English
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