Title:
ASSEMBLY FOR EXTRACTING CRUDE OIL
Document Type and Number:
WIPO Patent Application WO/1995/005539
Kind Code:
A1
Abstract:
The proposed assembly comprises: a hydraulic cylinder (1) mounted with the aid of the head (2) above the mouth of the well (3); a damping device in the form of a spring-loaded sleeve (7) which co-operates with the piston (4) of the hydraulic cylinder (1); and a well head sucker rod pump. The rod (5) of the piston (4) of the hydraulic cylinder (1) is kinematically connected to the rods (9) of the well head pump, while the cylinder seal is in the form of a sealing block (8) mounted in the head (2) in such a way that one of its parts is in contact with the hydraulic cylinder (1) and the other is in contact with the well (3).
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Inventors:
KAMARDIN VASILY KIRSANOVICH (RU)
Application Number:
PCT/RU1994/000077
Publication Date:
February 23, 1995
Filing Date:
April 11, 1994
Export Citation:
Assignee:
AKTSIONERNOE OBSCHESTVO ZAKRYT (RU)
KAMARDIN VASILY KIRSANOVICH (RU)
KAMARDIN VASILY KIRSANOVICH (RU)
International Classes:
F04B47/04; F04B53/16; (IPC1-7): F04B47/00
Domestic Patent References:
| WO1993018306A2 | 1993-09-16 |
Foreign References:
| FR2569781A1 | 1986-03-07 |
Other References:
A.G. MOLCHANOV, "Gidroprivodnye Shtangovge Skvazhinnye Nasosrye Ustanovki", 1982, "Nedra", (Moscow), pages 178-179, drawing VI.I.
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