Enhancing Inactive Well Recovery Potential - A Case History

Kimbrell, W.C.; Wojtanowicz, Andrew K.

doi:10.2118/2006-177

Canadian International Petroleum Conference 2006

DOI: 10.2118/2006-177

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Enhancing Inactive Well Recovery Potential - A Case History

W.C. Kimbrell

Andrew K. Wojtanowicz

Abstract: this paper is invited and may be presented at the meeting if filed in writing with the technical program chairman prior to the conclusion of the meeting. This paper and any discussion filed will be considered for publication in Petroleum Society journals. Publication rights are reserved. This is a pre-print and subject to correction.

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2014

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Enhancing Oil Recovery With Bottom Water Drainage Completion

Shirman

Wojtanowicz

Kurban

2014

Journal of Energy Resources Technology

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Field trials and physical modeling of wells with downhole water sink (DWS) completions have demonstrated controlled water coning and increased oil production rate. However, no field trials were long enough to show DWS potential in improving of oil recovery in comparison with conventional wells. Presented here are theoretical and experimental results from a DWS recovery performance study. The recovery study involved experiments with a physical model and computer simulations. The experimental results reveal that DWS dramatically accelerates the recovery process; a fivefold increase of the oil production rate was reached by adjusting the water drainage rate at the bottom completion. The results also show a 70% increase of oil recovery; from 0.52 to 0.88 for conventional and DWS completions, respectively. The computer-simulated experiments with commercial reservoir simulator demonstrate progressive improvement of recovery with downhole water drainage from 0.61 to 0.79 with no drainage and maximum drainage, respectively—a 24% increase of recovery factor, and a fivefold reduction of the time required to reach the limiting value of water cut, 0.98. However, the accelerated recovery process with DWS requires a substantial, up to 3.5-fold, increase of total water production. The simulation experiments also show that the main advantage of using DWS is its flexibility in controlling the recovery process. For conventional completions, recovery could be slightly increased by reducing production rates and largely increasing production times. For DWS, a combination of the top and bottom rates could be optimized for maximum recovery and minimum production time.

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Enhancing Oil Recovery With Bottom Water Drainage Completion

Shirman

Wojtanowicz

Kurban

2014

Journal of Energy Resources Technology

Self Cite

View full text Add to dashboard Cite

show abstract

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Enhancing Inactive Well Recovery Potential - A Case History

Cited by 1 publication

References 14 publications

Enhancing Oil Recovery With Bottom Water Drainage Completion

Enhancing Oil Recovery With Bottom Water Drainage Completion

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