Well configuration and method of increasing production from...

Details Well configuration and method of increasing production from... Well configuration and method of increasing production from...

2005-12-27

2005-12-27

Tsay, Frank S. (Department: 3672)

Wells

Processes

Placing or shifting well part

C166S304000, C166S242100

Reexamination Certificate

active

06978843

ABSTRACT:
A well configuration and method of increasing production from a hydrocarbon well having pre-existing production tube. A composite velocity string having an outer diameter smaller than the inner diameter of the production tube is installed in the production tube so that an annular gap is formed between the outer surface of the velocity string and the inner surface of the production tube. Production from the well is increased because the coefficient of fluid flow friction through the composite velocity string, and the amount of heat loss through the composite velocity string, are reduced compared to a steel velocity string. Installation efficiency is also increased because the composite velocity string is much lighter than a steel velocity string.

REFERENCES:
patent: 4793409 (1988-12-01), Bridges et al.
patent: 5282263 (1994-01-01), Nenniger
patent: 6454010 (2002-09-01), Thomas et al.
patent: 6523615 (2003-02-01), Gandy et al.
patent: 6527056 (2003-03-01), Newman

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