Oilfield tubing string integrally enclosing a fluid production o

Details Oilfield tubing string integrally enclosing a fluid production o Oilfield tubing string integrally enclosing a fluid production o

1994-09-30

1995-11-21

Novosad, Stephen J.

Wells

Processes

Assembling well part

166375, 166384, E21B 1718, E21B 3410

Patent

active

054678269

ABSTRACT:
An integrated oilfield tubing string is provided with two continuous fluid-isolated interior passageways extending longitudinally therethrough, wherein the first interior passageway serves as a production or injection tube and the smaller second interior passageway serves as a service line. The second passageway has a crescentic cross section and is formed by affixing the longitudinal edges of an elongated arcuate band to the inside or outside of the tube while maintaining a space between the band and the tube wall. The internally and externally exposed surfaces of the tube and band define relatively smooth convex outside and concave inside surfaces of the integrated tubing string. The present invention further provides a method of constructing the integrated tubing string.

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