Wells – Processes – With indicating – testing – measuring or locating
Reexamination Certificate
2004-06-22
2008-08-12
Gay, Jennifer H (Department: 3676)
Wells
Processes
With indicating, testing, measuring or locating
C166S101000
Reexamination Certificate
active
07409989
ABSTRACT:
A well jet device comprises a packer on a tubing string, a jet pump nozzle and mixing chamber and stepped through channel and sealing unit with an axial channel and mountable in said stepped channel. A flexible tube with logging device for measuring on the lower end thereof is passed through the axial channel, movable with respect thereto. Packer releasing is carried out on attaining a specified depth. The logging device is run into the well in production formation areas via said flexible tube. During downwards running, a sealing unit is mounted in the through channel and background values of physical parameters are recorded. Afterwards, fluid working medium is supplied to the jet pump nozzle, forming a series of different-value depressions in the under-packer space. Well flow rate and physical parameters are measured. The device is raised and tubing string, jet pump and released packer are extracted.
REFERENCES:
patent: 3892274 (1975-07-01), Dill
patent: 4168747 (1979-09-01), Youmans
patent: 4293283 (1981-10-01), Roeder
patent: 4501337 (1985-02-01), Dickinson et al.
patent: 4744730 (1988-05-01), Roeder
patent: 2059891 (1996-05-01), None
patent: 2121610 (1998-11-01), None
Gay Jennifer H
Harcourt Brad
Patenttm.us
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