Establishing IPR in Gas-Condensate Reservoir: An Alternative Approach

M. H. Chachar, S. A. Jokhio, A. H. Tunio, H. A. Qureshi

Abstract


Inflow performance relationship (IPR) accuracy in the condensate reservoir is a long-standing problem in the oil industry. This paper presents a new approach to project the gas phase IPR in condensate reservoirs. IPR is estimated by Rawlins and Schellhardt equation whereas the gas pseudo-pressure function is solved by two methods and the results are compared. Both two pseudo-pressure equations are used to estimate IPR. Additionally, an average of both IPR’s is estimated and compared. At the reservoir pressure, the difference between both flow rates is negligible i.e. at 6750 psi, the flow rate difference is 0.55 MMSCF/D. As pressure declines the difference is increasing at one stage, it is observed approximately 15 MMSCF/D.


Keywords


gas; condensate; condensate reservoir; Pseudopressure; Well productivity; Relative Permeability; Permeability; IPR

Full Text:

PDF

References


S. A. Jokhio, D. Tiab, “Establishing inflow performance relationship (IPR) for gas condensate wells”, SPE Gas Technology Symposium, Calgary, USA, 30 April-2 May, 2002

H. H. Evinger, M. Muskat, “Calculation of theoretical productivity factors”, Transactions of the AIME, Vol. 146, No. 1, pp. 126-139, 1942

J. T. Vogel, “Inflow Performance Relationships for solution-gas drive wells”, Journal of Petroleum Technology, Vol. 20, No. 1, pp. 83-92, 1968

W. T. Weller, “Reservoir performance during two phase flow”, Journal of Petroleum Technology, Vol. 18, No. 2, pp. 240-245, 1966

E. L. Rawlins, M. A. Schellhardt, Backpressure data on natural gas wells and their application to production practices, Literary Licensing, 1935

D. Afidick, N. J. Kaczorowski, S. Bette, “Production performance of a retrograde gas reservoir: a case study of the Arun field”, SPE Asia Pacific Oil and Gas Conference, Melbourne, Australia, November 7-10, 1994

O. Fevang, C. H. Whitson, “Modeling gas condensate deliverability”, SPE Reservoir Engineering, Vol. 11, No. 4, pp. 221-230, 1995

R. Mott, A. Cable, M. Spearing, “A new method of measuring relative permeabilities for calculating gas-condensate well deliverability”, 1999 SPE Annual Technical Conference and Exhibition, Houston, USA, October 3–6, 1999

A. C. Gringarten, A. Al-Lamki, S. Daungkaew, R. Mott, T. M. Whittle, “Well test analysis in gas-condensate reservoirs”, SPE Annual Technical Conference and Exhibition, Dallas, USA, October 1-4, 2000

M. S. Abdallah, M. A. Al-Zawad, M. L. Fraim, “Common misinterpretations of gas condensate reservoirs”, SPE Kingdom of Saudi Arabia Annual Technical Symposium and Exhibition, Dammam, Saudi Arabia, April 24-27, 2017

M. H. Chachar, S. A. Jokhio, A. H. Tunio, “Investigating gas phase productivity in gas condensate reservoir: a review”, Engineering Science & Technology International Research Journal, Vol. 2, No. 3, pp. 95-99, 2018

S. A. Jokhio, D. Tiab, S. Baladi, A. H. Tunio, “Estimating pseudopressure function without relative permeability [kr(Sw)] for two and three phase gas condensate systems”, SPE Asia Pacific Oil and Gas Conference and Exhibition, Melbourne, Australia, October 8-10, 2002

R. Al-Hussainy, H. J. Ramey, P. B. Crawford, “The flow of real gases through porous media”, Journal of Petroleum Technology, Vol. 18, No. 5, pp. 624-636, 1966

P. Gherson, C. Faruk, “Gas-condensate well test analysis with and without relative permeability curves”, SPE Annual Technical Conference and Exhibition, Dallas, USA, October 1-4, 2000

V. N. Gopal, “Gas Z-factor equations developed for computer”, Oil and Gas Journal, Oil and Gas Journal, Vol. 75, No. 8, pp. 8-13, 1977

A. L. Lee, M. H. Gonzalez, B. E. Eakin, “The viscosity of natural gases”, Journal of Petroleum Technology, Vol. 18, No. 8, pp. 997-1001, 1966




eISSN: 1792-8036     pISSN: 2241-4487