Elevation sensor for a service hose and an apparatus for...

Wells – With electrical means – Indicating

Reexamination Certificate

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Details

C166S077510, C166S077530, C166S085100, C166S085500, C175S040000, C175S085000, C175S113000, C175S162000, C414S022650, C414S022680, C414S022710

Reexamination Certificate

active

07322406

ABSTRACT:
An operational system and method and improved apparatus for positioning and stabbing well tubulars wherein: the grasping members of the apparatus can be folded and unfolded; the boom assembly can be pivoted to a downward clearance position; a plurality of stabbing apparatuses can be placed and used in a stacked position in the derrick; the grasping members can opened at an angle with respect the boom; the grasping members can be mounted on either lateral side of the boom; a sensor monitors the relative position of the rig top drive with respect to the stabbing apparatus; the grasping members and/or the boom will automatically pivot to a breakaway position if impacted; and/or the system is programmed and configured to prevent the accidental performance of critical operations out of sequence.

REFERENCES:
patent: 3828943 (1974-08-01), Simon
patent: 3883009 (1975-05-01), Swoboda et al.
patent: 4440220 (1984-04-01), McArthur
patent: 4524952 (1985-06-01), Rome et al.
patent: 4921386 (1990-05-01), McArthur
patent: 5049020 (1991-09-01), McArthur
patent: 5762150 (1998-06-01), Cheng et al.
patent: 6220807 (2001-04-01), Sorokan
patent: 7178612 (2007-02-01), Belik

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