Wells – Processes – With indicating – testing – measuring or locating
Reexamination Certificate
2006-08-15
2006-08-15
Bates, Zakiya W. (Department: 3676)
Wells
Processes
With indicating, testing, measuring or locating
C166S068000, C166S106000
Reexamination Certificate
active
07090011
ABSTRACT:
The inventive method consists in the following: a drillable packer provided with a channel closed by a back valve is arranged in a well; afterwards a tubing string carrying a jet pump and a stinger is run into said well, the stringer being connected to the packer; the back valve is open; a logging instrument and a sealing unit are introduced into the tubing string with the aid of a cable; a depression is produced on the formation by means of the pump, a bottomhole pressure and the parameters of the formation are measured with the aid of said instrument, the parameters of physical fields being recorded. The results of said investigations being interpreted, the technical state of the well is defined. The instrument and the sealing unit being extracted from the tube string, a blocking insert is dropped therein. The tubing string is uplifted, the stringer is disconnected from the packer and the back valve is closed. A cement slurry being pumped into the tubing string, said tubing string is put down, the stringer is connected to the packer and the back valve is open. The cement slurry is pumped into the tail space, squeezed into the productive formation and the tubing string together with the pump and the stringer is extracted. The cement slurry being hardened, the packer is drilled out, the formation is perforated and the tubing string provided with a guiding cone, the packer and the pump is brought in the well. Said invention increases the reliability of the repair and insulating operations.
REFERENCES:
patent: 4293283 (1981-10-01), Roeder
patent: 4744730 (1988-05-01), Roeder
patent: 2059891 (1996-05-01), None
patent: 2129671 (1999-04-01), None
patent: 1146416 (1985-03-01), None
Khomynets Zinoviy Dmitrievich
Stenin Vladimir Petrovich
Vaygel Aleksandr Aleksandrovich
Bates Zakiya W.
Dellett & Walters
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