[12] Patent
[11] Patent No.:GC0007486  
[45] Date of Publishing the Grant of the Patent: 30/Apr /2018                48/2018  
Number of the Decision to Grant the Patent:2018/125284
Date of the Decision to Grant the Patent:01/Apr/2018

[21] Application No.:GC 2013-24014

[22] Filing Date:2/4/2013

[30] Priority:

[33] State [32] Priority date [31] Priority No.

[72] Inventors:1- Mohamed Nabil NOUI-MEHIDIĜŒ2- Rabea AHYAD

[73] Owner: SAUDI ARABIAN OIL COMPANY, 1 Eastern Avenue, 31311 , Dhahran , Saudi Arabia

[74] Agent: Suleiman I. Al-Ammar Law Office




Int. Cl.: E21B43/38 (2006.01)

[56] Cited Documents:

-GB 2409691 A (PUMP TOOLS LTD) 6 July 2005
-US 4900433 A (DEAN ET AL.) 13 February 1990
-US 4531584 A (WARD) 30 July 1985
-US 3128719 A (JONGBLOED ET AL) 14 April 1964
-US 5482117 A (KOLPAK ET AL.) 9 January 1996
-US 6113675 A (BRANSTETTER) 5 September 2000
-US 2005217859 A1 (HARTMAN ET AL.) 6 October 2005
Examiner: Eng. Fahad M. AlBaker

[57] Abstract: An electrical submersible pump assembly for use in a well, including a well having a high gas-to-liquid ratio has a motor, a hollow, tubular drive shaft which drives the pump, and a liquid-gas separator assembly upstream of the pump intake. The liquid-gas separator has a hollow tubular portion, which communicates with the open, lower end of the drive shaft, openings through its sidewall, and a closed lower end. The sidewall also includes at least one outwardly extending projection shaped for urging liquid contained in a liquid/gas mixture flowing towards the pump outwardly, away from the sidewall openings. Preferably, the outwardly extending projection comprises a helical blade which, using either the well casing or a separate sheath, defines a helical channel through which the oil-gas mixture flows prior to reaching the pump intake. The centrifugal force in the channel forces the oil component away from the openings and forces the gas component through the openings, where such gas may be vented to the surface.
No. of claims: 7     No. of figures: 3


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