Title:
ELECTRIC SUBMERSIBLE PUMP, TUBING AND METHOD FOR BOREHOLE PRODUCTION
Document Type and Number:
WIPO Patent Application WO/2010/086658
Kind Code:
A3
Abstract:
An electric submersible pump assembly (ESP) (21, 120) is deployed in a production tube (20, 100) in a borehole such that the motor (26, 41, 121) of the ESP is spaced from the inner wall of the production tube, defining a conduit (36, 111) through which the pumped well fluid can flow to cool the motor. The production tube may have an enlarged diameter portion (25, 76, 101) within which the motor is positioned. Alternatively or additionally, the ESP and/or the production tube may be provided with stabilising spacers (24, 45, 140, 141) which extend between the ESP and the tube to centralise the ESP in the tube and support it against vibrational movement, the spacers defining an annular conduit (36, 111) between the motor casing and the production tube.
Inventors:
HEAD PHILIP (GB)
Application Number:
PCT/GB2010/050133
Publication Date:
October 14, 2010
Filing Date:
January 28, 2010
Export Citation:
Assignee:
ARTIFICIAL LIFT CO LTD (GB)
HEAD PHILIP (GB)
HEAD PHILIP (GB)
International Classes:
E21B43/12; E21B17/10
Foreign References:
| US4440221A | 1984-04-03 | |||
| FR2659748A1 | 1991-09-20 | |||
| US2884761A | 1959-05-05 | |||
| US5269377A | 1993-12-14 | |||
| US5159977A | 1992-11-03 | |||
| US20080202748A1 | 2008-08-28 | |||
| US20030141056A1 | 2003-07-31 | |||
| US20080245525A1 | 2008-10-09 |
Attorney, Agent or Firm:
NOVAGRAAF LONDON (13 Northburgh Street, London Greater London EC1V 0JP, GB)
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