Directional drilling apparatus

Details Directional drilling apparatus Directional drilling apparatus

1996-04-22

1997-10-21

Tsay, Frank

Wells

Guide for device or conduit

On sucker or pump rod

1662426, 175 50, E21B 1710, E21B 4712

Patent

active

056786301

ABSTRACT:
A well bore communication pulser in a shuttle package is arranged to aid in stabbing the package into the muleshoe receiving bore in the drill string, especially when the muleshoe is located in a drill string bore larger than the upwardly continuing bore of the drill string from which the package arrives when being installed. The shuttle package is provided with at least two elastomer centralizers separated along its length with the lower one just above the muleshoe after the package is stabbed into its bore. When the drill string is inclined relative to vertical the package sags in the span between the centralizers. The sag lifts the lower end of the package toward the drill string centerline by fulcrum action of the lower centralizer.

REFERENCES:
patent: 4169505 (1979-10-01), Neal
patent: 4194561 (1980-03-01), Stokley et al.
patent: 4325438 (1982-04-01), Zuvela
patent: 4790380 (1988-12-01), Ireland et al.
patent: 5353872 (1994-10-01), Wittrisch
patent: 5495237 (1996-02-01), Yuasa et al.
patent: 5507348 (1996-04-01), Van Steenwyk et al.

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