Wellhead seal probe

Details Wellhead seal probe Wellhead seal probe

1991-05-06

1992-05-19

Novasad, Stephen J.

Wells

Above ground apparatus

With assembly or disassembly means

166 77, 166 84, 166387, E21B 2306, E21B 3303

Patent

active

051139367

ABSTRACT:
A tool is disclosed for inserting an oil wellhead isolation device into a well casing. The device includes a mandrel which is threaded on its exterior and which forms a part of a ball nut displacement drive system. The drive nut and its associated mechanical drive components are disposed within a drive housing. The invention presents a novel drive system for the inserting of the mandrel. It provides a simpler and more compact overall structure. Furthermore, the disadvantage is avoided of the jamming encountered in prior art devices operating with a plurality of hydraulic or mechanical displacement devices disposed at a distance from the axis of the mandrel.

REFERENCES:
patent: 3100015 (1963-08-01), Regan
patent: 4159118 (1979-06-01), Jelinek et al.
patent: 4175475 (1979-11-01), Eckhardt
patent: 4204690 (1980-05-01), Holland et al.
patent: 4230325 (1980-10-01), Butler et al.
patent: 4381868 (1983-05-01), Croy et al.
patent: 4448424 (1984-05-01), Ernst
patent: 5025857 (1991-06-01), McLeod

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