Horizontal wells have become a popular alternative for the development of hydrocarbon fields around the world because of their high flow efficiency caused by a larger contact area made with the reservoir. Most of the analytical work done in the past on horizontal productivity either assumed that the well is infinitely conductive or the flow is uniform along the entire well length. The infinite conductive assumption is good only when the pressure drop in the wellbore is very small compared to the drawdown in the reservoir otherwise the pressure drop in the wellbore should be taken into account. In this paper, an improved predictive model that takes into account the effect of all possible wellbore pressure losses on productivity index of long horizontal well was developed. Results show that the discrepancies in the predictions of the previous models and experimental results were not only due to effect of friction pressure losses as opined by Cho and Shah but may also be due to all prominent pressure losses such as kinetic change and fluid accumulation experienced by the flowing fluid in a conduit. The effect is most pronounced at the early production time where initial transience at the onset of flow is experienced.
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September 2011
Research Papers
Modeling Productivity Index for Long Horizontal Well
Fadairo A. S. Adesina,
Fadairo A. S. Adesina
SPE
Energy and Environmental Research Group, Department of Petroleum Engineering,
Covenant University Ota
, Nigeria
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Ako Churchill,
Ako Churchill
SPE
Energy and Environmental Research Group, Department of Petroleum Engineering,
Covenant University Ota
, Nigeria
Search for other works by this author on:
Falode Olugbenga
Falode Olugbenga
SPE
Energy and Environmental Research Group, Department of Petroleum Engineering,
Covenant University Ota
, Nigeria
Search for other works by this author on:
Fadairo A. S. Adesina
SPE
Energy and Environmental Research Group, Department of Petroleum Engineering,
Covenant University Ota
, Nigeria
Ako Churchill
SPE
Energy and Environmental Research Group, Department of Petroleum Engineering,
Covenant University Ota
, Nigeria
Falode Olugbenga
SPE
Energy and Environmental Research Group, Department of Petroleum Engineering,
Covenant University Ota
, Nigeria
J. Energy Resour. Technol. Sep 2011, 133(3): 033101 (8 pages)
Published Online: October 3, 2011
Article history
Received:
June 15, 2007
Revised:
July 27, 2011
Published:
October 3, 2011
Citation
Adesina, F. A. S., Churchill, A., and Olugbenga, F. (October 3, 2011). "Modeling Productivity Index for Long Horizontal Well." ASME. J. Energy Resour. Technol. September 2011; 133(3): 033101. https://doi.org/10.1115/1.4004887
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