Sheave drive assembly for flexible production tubing

Details Sheave drive assembly for flexible production tubing Sheave drive assembly for flexible production tubing

1984-03-26

1986-02-18

Novosad, Stephen J.

Wells

Above ground apparatus

Moving tubing or cable into an existing well

138111, 242 54R, F21B 1908

Patent

active

045707057

ABSTRACT:
Flexible production tubing is wound about a reel for convenient transport to and from a well site. A submersible pump is attached to the end of the flexible tubing and is inserted through the well casing to a producing formation. The flexible production tubing includes a high strength injection core, a tubular production conduit, auxiliary hydraulic/pneumatic conduits, signal conductors, power conductors and a load bearing tension member. Insertion and withdrawal of the flexible tubing and pump are accomplished by a hydraulically powered drive assembly mounted above the well head. The production tubing is characterized by a generally pentagonal cross-section and is compressively engaged between a hydraulically powered drive sheave and a pneumatically biased idler sheave.

REFERENCES:
patent: 3690136 (1972-09-01), Slator et al.
patent: 4003435 (1977-01-01), Cullen et al.
patent: 4145014 (1979-03-01), Chatard et al.
patent: 4336415 (1982-06-01), Walling

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