A new technique has been developed for analyzing the constant bottomhole pressure (BHP) test data. The method presented in this paper allows to calculate the skin factor for damaged and stimulated oil wells. Advantages of the BHP test are: (1) they do not require that the well be shut in; (2) the fluid production can be easily controlled (at constant flow rate tests the BHP is changing with time); and (3) wellbore storage effects on the test data are short-lived. It is assumed that the instantaneous flow rate and time data are available from a well produced against a constant bottomhole pressure. Only records of the flowing time and flow rate data are required to compute the value of the skin factor. A semi theoretical equation is used to approximate the dimensionless flow rate. This formula is used to obtain a quadratic equation for determining the skin factor. The accuracy of the basic quation will be shown below. The paper includes an example of calculation.
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March 2003
Technical Papers
Determination of the Skin Factor for a Well Produced at a Constant Bottomhole Pressure
I. M. Kutasov,
I. M. Kutasov
School of Petroleum Engineering, University of New South Wales, Sydney, 2052, Australia
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M. Kagan
M. Kagan
School of Petroleum Engineering, University of New South Wales, Sydney, 2052, Australia
Search for other works by this author on:
I. M. Kutasov
School of Petroleum Engineering, University of New South Wales, Sydney, 2052, Australia
M. Kagan
School of Petroleum Engineering, University of New South Wales, Sydney, 2052, Australia
Contributed by the Petroleum Division for publication in the JOURNAL OF ENERGY RESOURCES TECHNOLOGY. Manuscript received by the Petroleum Division; April 2001; revised manuscript received March 2002. Associate Editor: E. Ozkan.
J. Energy Resour. Technol. Mar 2003, 125(1): 61-63 (3 pages)
Published Online: March 14, 2003
Article history
Received:
April 1, 2001
Revised:
March 1, 2002
Online:
March 14, 2003
Citation
Kutasov , I. M., and Kagan, M. (March 14, 2003). "Determination of the Skin Factor for a Well Produced at a Constant Bottomhole Pressure ." ASME. J. Energy Resour. Technol. March 2003; 125(1): 61–63. https://doi.org/10.1115/1.1513795
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