Method and apparatus for logging short radius horizontal drainho

Details Method and apparatus for logging short radius horizontal drainho Method and apparatus for logging short radius horizontal drainho

1989-11-01

1991-04-30

Myracle, Jerry W.

Measuring and testing

Borehole or drilling

Downhole test

166250, E21B 4700

Patent

active

050107640

ABSTRACT:
A method and apparatus for logging short radius horizontal drainholes. An end sub in a tubing string contains a bend which angles the downstream end of the sub with respect to the upstream end. A perforated sub is connected to the upstream end of the end sub and contains sensor means communicating with the exterior through the perforations. When the angled end sub is aligned with the horizontal drainhole, downward movement of the tubing string causes the string to move through the drainhole, thereby allowing the sensor to determine the conditions therein.

REFERENCES:
patent: 4168747 (1979-09-01), Youmans
patent: 4196619 (1980-04-01), Collins
patent: 4267727 (1981-05-01), Hoppe
patent: 4282523 (1981-08-01), Youmans
patent: 4441362 (1984-04-01), Carlson
patent: 4495803 (1985-01-01), Beasley et al.
patent: 4560934 (1985-12-01), Dickinson
patent: 4641520 (1987-02-01), Nai-Hsein Mao
patent: 4805448 (1989-02-01), Armell

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