Rotary running tool for rotary lock mandrel

Details Rotary running tool for rotary lock mandrel Rotary running tool for rotary lock mandrel

1991-09-06

1992-07-28

Dang, Hoang C.

Wells

With below and above ground modification

Above ground actuating means for below ground device

166115, 166125, 166237, 166240, E21B 2302

Patent

active

051334046

ABSTRACT:
A locking system utilizing metal seals for sealing and a rotary lock mandrel which is rotated to lock by a rotary running tool in a landing nipple in a well conduit. The lock mandrel has a metal sealing surface sealingly engageable with a metal seat in the landing nipple and orientors on a number of helically profiled segments which are rotatably engageable with mating profiled segments in the landing nipple. As the lock mandrel is lowered on the running tool into the landing nipple, lock mandrel segments are oriented between nipple segments, and the mandrel metal sealing surface engages the metal seat in the landing nipple. Downward jarring on the running tool rotates the mandrel segments into engagement with the landing nipple segments, locking the lock mandrel in the landing nipple, sealingly engaging the metal seal surface on the metal seat and releasing the running tool from the locking mandrel for retrieval from the well conduit.

REFERENCES:
patent: 1487721 (1924-03-01), Clayton
patent: 2344121 (1944-03-01), Bassinger
patent: 2673614 (1954-03-01), Miller
patent: 3036641 (1962-05-01), Nutter et al.
patent: 3208531 (1965-09-01), Tamplen
patent: 3912014 (1975-10-01), Wetzel
patent: 4745973 (1988-05-01), Semar
patent: 4781250 (1988-11-01), McCormick et al.
patent: 5029642 (1991-07-01), Crawford

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