Improved near-well approximation for prediction of the gas/oil production ratio from oil-rim reservoirs |
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| Authors: | Svenn Anton Halvorsen Are Mjaavatten Robert Aasheim |
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| Institution: | 1. Teknova AS, Kristiansand, Norway
2. Yara International ASA, Porsgrunn, Norway
3. Research Centre Porsgrunn, Statoil ASA, Porsgrunn, Norway
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| Abstract: | A model with short computational time has previously been developed to predict the rate-dependent gas/oil ratio (GOR) from
a horizontal well. The oil flow towards the wellbore is based on a one-dimensional model by Konieczek. The model performs
remarkably well for medium-time production optimization (weeks, months), while the predictions during the first days after
a large change in the production can be poor. An improved one-dimensional model for the flow towards the wellbore is proposed,
where the oil flow is treated as a superposition of three terms:
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Radial flow towards the wellbore and towards a mirror well. |
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| Keywords: | |
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