Gas flow system

Wells – Processes – With indicating – testing – measuring or locating

Reexamination Certificate

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Details

C166S053000

Reexamination Certificate

active

07954547

ABSTRACT:
A gas flow system for removing a liquid from a well bore and allowing for gas production is provided. The gas flow system comprises a casing in the well bore for allowing flow of the liquid and gas; a tubing string in the casing for allowing flow of the liquid and gas; pressure measurement devices for use in determining a rate of liquid influx into the well bore; a casing control valve moveable between various positions ranging from fully open to fully closed for controlling flow through the casing; a tubing control valve moveable between various positions ranging from fully open to fully closed for controlling flow through the tubing; and flow measurement devices for determining the rate of flow through the tubing and the total rate of flow. The system is switchable between a current production phase and an alternate production phase based on the determined rate of liquid influx, a tubing critical velocity and a gas flow rate through the tubing, wherein switching from a current production phase to an alternate production phase results in the either or both of a decrease in liquid build-up in the well bore and an increase in gas production rate and wherein the current production phase differs from the alternate production phase.

REFERENCES:
patent: 4596516 (1986-06-01), Scott et al.
patent: 5033550 (1991-07-01), Johnson et al.
patent: 5957199 (1999-09-01), McLean et al.
patent: 6629566 (2003-10-01), Liknes
patent: 6991034 (2006-01-01), Wilde
patent: 7204314 (2007-04-01), Lauritzen et al.
patent: 2005/0039813 (2005-02-01), Dougherty, Sr. et al.
patent: 2005/0053503 (2005-03-01), Gallant
patent: 2005/0155769 (2005-07-01), Sherwood et al.
patent: 2005/0217859 (2005-10-01), Hartman et al.
patent: 2005/0274527 (2005-12-01), Misselbrook et al.
patent: 2006/0045767 (2006-03-01), Liknes
patent: 2006/0045781 (2006-03-01), Liknes
patent: 2006/0065390 (2006-03-01), Amies et al.
patent: 2006/0076139 (2006-04-01), Conrad
patent: 2006/0102346 (2006-05-01), Casey
patent: 2006/0124298 (2006-06-01), Geler
patent: 2006/0144597 (2006-07-01), Casey
patent: 2006/0185840 (2006-08-01), Conrad
patent: 2007/0012442 (2007-01-01), Hearn
Turner, R.G. et al.: “Analysis and Prediction of Minimum flow Rate for the Continuous Removal of Liquids from Gas Wells,” Journal of Petroleum Technology, Nov. 1969, pp. 1475-1482.
Coleman, S.B. et al, “A New Look at Predicting Gas- Well Load-Up,” Journal of Petroleum Technology, Mar. 1991 pp. 329-333.
Martinez et al. “Coiled Tubing Velocity Strings-Expanding the Cases”, 1998 SPE/ ICoTA Coiled Tubing Roundtable, Apr. 15-16, 1998, pp. 111-117.
Harms et al. “Better Results Using Integrated Production Models for Gas Wells ,” 2005 SPE Production and Operations Symposium, Apr. 17-19, 2005, pp. 1-7.
Osman et al, “Prediction of Critical Gas Flow Rate for Gas Well Unloading” 10thAbu Dhabi International Petroleum Exhibition and Conference, Oct. 13-16, 2002, pp. 1-5.

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