Operation method of an oil well pumping unit for well...

Details Operation method of an oil well pumping unit for well... Operation method of an oil well pumping unit for well...

2005-08-09

2005-08-09

Dang, Hoang (Department: 3672)

Wells

Processes

With indicating, testing, measuring or locating

C166S055100, C166S105000, C166S297000, C166S372000

Reexamination Certificate

active

06926080

ABSTRACT:
The invention relates to pumping units for extraction oil from oil wells comprising, all of them being installed on the piping string, a packer, a back pressure valve, a jet pump having the active nozzle, the mixing chamber, the diffuser and the central channel for supplying a passive medium, and a seal assembly. The back pressure valve is installed below the seal assembly, and a geophysical instrument is installed on the well-logging cable going through the seal assembly. The unit further comprises a filter and a perforator. The geophysical instrument is installed above the back pressure valve and below the jet pump, and the filter and the perforator are installed below the back pressure valve.

REFERENCES:
patent: 5372190 (1994-12-01), Coleman
patent: 5374163 (1994-12-01), Jaikaran
patent: 5971069 (1999-10-01), Stoy et al.
patent: 6250384 (2001-06-01), Beauquin
patent: 6497287 (2002-12-01), Podio et al.
patent: 6685439 (2004-02-01), Harrell et al.
patent: 6755249 (2004-06-01), Robison et al.

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