| Autor: |
Hans Bruining, D. Marchesin, Rouhi Farajzadeh |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
82nd EAGE Annual Conference & Exhibition. |
| DOI: |
10.3997/2214-4609.202012069 |
| Popis: |
Summary There is much current interest to reduce the recovery costs per barrel of oil produced. About 17% of the produced fossil fuel energy is used for recovery, transportation, and processing. This means that higher efficiency in field operations is able to significantly reduce the greenhouse gas emission. The paper deals with the additional advantage of application of volatile oil to steam injection to enhance the recovery from petroleum reservoirs. We formulate a mathematical and numerical model that simulates coinjection of volatile oil with steam into a porous rock in a one-dimensional setting and compute the circulation costs. We utilize the mathematical theory of conservation laws to validate the numerical simulations. To determine the minimized recovery costs exergy turns out to be a powerful concept, being the amount of useful work, both on the input side as on output fuel recovery. When the boiling point of the volatile oil is near the boiling point of water, the striking result is that the speed of the evaporation front is equal or somewhat larger than the speed of the steam condensation front. The exergy analysis shows that this also corresponds to optimal exergy recovery. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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