Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Mechanical measurement system
Reexamination Certificate
2007-07-03
2007-07-03
Nghiem, Michael (Department: 2863)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Mechanical measurement system
Reexamination Certificate
active
10433653
ABSTRACT:
A method for stabilizing a multiphase flow in a flow line, where instability of the multiphase flow is caused by at least one slug. At least one pressure variable is continuously measured at a flow line inlet upstream of the point where the main part of the slug is generated. The pressure variable is supplied to a dynamic feedback controller, wherein the pressure variable upstream of the slug is an input to the dynamic feedback controller. An output of the dynamic feedback controller is continuously calculated. A control valve at said flow line is controlled by the output from the dynamic feedback controller, wherein the multiphase flow is stabilized throughout the flow line.
REFERENCES:
patent: 4916617 (1990-04-01), Norwood
patent: 5256171 (1993-10-01), Payne
patent: 5494067 (1996-02-01), Levallois
patent: 5544672 (1996-08-01), Payne et al.
patent: 6041803 (2000-03-01), De Almeida et al.
patent: 6390114 (2002-05-01), Haandrikman et al.
patent: 6716268 (2004-04-01), Molyneux et al.
patent: 2006/0151167 (2006-07-01), Aarvik et al.
patent: 2358205 (2001-07-01), None
patent: 97/04212 (1997-02-01), None
patent: 00/00715 (2000-01-01), None
English Translation of Markovich, SU 1000053, 1983.
K. Havre et al., Taming Slug Flow in Pipelines, Oil & Gas, pp. 55-63, ABB Review No. 4, Dec. 2000.
K. Havre et al., Active Feedback Control as the Solution to Severe Slugging, SPE 71540, 2001, pp. 1-16.
G. Franklin et al., Digital Control of Dynamic Systems, 2ndEdition, 1990.
B. Jansen et al., Automatic Control of Unstable Gas Lifted Wells, SPE 56832, 1999, pp. 1-9.
G. Haandrikman et al., Slug Control in Flowline/Riser Systems, Shell Global Solutions, Dept. of Fluid Flow and Thermodynamics, Shell Research and Technology Centre Amsterdam, 16 pgs., Proc. 2ndInt. Conf. Latest Advances ni Offshore Processing, Nov. 9-10, 1999.
C. Sarica et al., A New Technique to Eliminate Severe Slugging in Pipeline/Riser Systems, SPE 63185, 2000, pp. 1-9.
P. Hedne et al., Suppression of Terrain Slugging with Automatic and Manual Riser Choking, SINTEF Multiphase Flow Laboratory, Rondheim, Norway, pp. 453-460, 1990.
V. Henriot et al., Stimulation of Process to Control Severe Slugging: Application to the Dunbar Pipeline, SPE 56461, 1999, pp. 1-9.
F. Garnaud et al., New Field Methods for a Maximum Lift Gas Efficiency Through Stability, SPE 35555, 1996, pp. 1-8.
P. Lemetayer et al., Tool of the 90's to Optimize Gas-Lift Efficiency in the Gonelle Field, Gabon, SPE 23089, 1991, pp. 513-520.
A. Courbot, Prevention of Severe Slugging in the Dunbar 16 Multiphase Pipeline, OTC 8196, 1998, pp. 1-7, 1996.
PD Molyneux et al., Characterization and Active Control of Slugging in a Vertical Riser, BHR Group 2000 Multiphase Technology, pp. 161-172.
Dr. Z. Schmidt et al., Choking can Eliminate Severe Pipeline Slugging, Oil & Gas Journal, Nov. 12, 1979, pp. 230-238.
Z. Schmidt et al., Experimental Study of Severe Slugging in a Two-Phase-Flow Pipeline-Riser Pipe System, Soc. Of Petroleum Engineers Journal, Oct. 1980, pp. 407-414.
T. Drengstig et al., Slug Control of Production Pipeline, Oct. 12, 2001, 7 pgs.
Are Slugs Flooding Your Separators and Causing Production Losses?, Dril-Quip Solves Your Problem with its New S3Slug Suppression System 2000.
Y. Taitel, Stability of Severe Slugging, Int. J. Multiphase Flow, vol. 12, No. 2, 1986, pp. 203-217.
K. Havre, Inventor concerns regarding further patent applications based on Norwegian patent application 20006208, May 14, 2003, 1 page.
ABB Research Ltd.
Franklin Eric J.
Nghiem Michael
Venable LLP
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