Casing hanger running tool

Details Casing hanger running tool Casing hanger running tool

1986-12-17

1987-12-15

Novosad, Stephen J.

Wells

Processes

Placing or shifting well part

166348, 166123, F21B 2308

Patent

active

047126213

ABSTRACT:
A running tool is used to set a seal on a casing hanger in a wellhead. The running tool has a holder for connecting the running tool to the casing hanger as it is lowered into the wellhead. A piston is carried on the running tool above the seal. An actuating passage extends from an axial passage in the running tool to the piston. A release passage extends from the axial passage to the holder. A pin and slot enables the upper section of the tool to be lowered relative to the lower section. The combination of a sliding valve, moved by a plug pumped from the surface, and the pin and slot, places the running tool in a mode for setting the seal and a mode for releasing the running tool from the casing hanger.

REFERENCES:
patent: 3693714 (1972-09-01), Baugh
patent: 3837684 (1974-09-01), Hynes
patent: 4067062 (1978-01-01), Baugh
patent: 4096913 (1978-06-01), Kenneday et al.
patent: 4373584 (1983-02-01), Silberman et al.
patent: 4548273 (1985-10-01), Leicht et al.
patent: 4564068 (1986-01-01), Baugh
patent: 4597448 (1986-07-01), Baugh

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