Running tool lock open device

Patent metadata

Field	Value
Publication number	US-9845650-B2
Application number	US-201514826939-A
Country	US
Kind code	B2
Filing date	Aug 14, 2015
Priority date	Aug 14, 2015
Publication date	Dec 19, 2017
Grant date	Dec 19, 2017

Abstract

A lock open device for a running tool including a mandrel, the device including a collar located on the mandrel of the running tool and having an open position profile and a slot comprising a rotational travel section and an axial travel section. The lock open device also includes a top plate having a cog configured to engage with the open position profile to restrict the collar from relative rotation and a can including a pin configured to engage with the collar slot, in which the collar is rotatable upon overcoming a resistance of the top plate such that the pin is located in the axial travel section, allowing axial movement of the collar relative to the can.

First claim

What is claimed is:

1. A lock open device for a miming tool including a mandrel, the device comprising:
a collar located on the mandrel of the running tool and comprising:
an open position profile; and
a slot comprising a rotational travel section and an axial travel section;

a top plate comprising a cog configured to engage with the open position profile to restrict the collar from relative rotation;
a can including a pin configured to engage with the collar slot; and
wherein the collar is rotatable upon overcoming a resistance of the top plate such that the pin is located in the axial travel section, allowing axial movement of the collar relative to the can.

2. The lock open device of claim 1 , wherein the collar comprises a plurality of slots and the can comprises a plurality of pins, and wherein each slot of the collar is configured to be engaged with one of the pins of the can.

3. The lock open device of claim 2 , wherein the slots comprise j-slots.

4. The lock open device of claim 2 , wherein the collar comprises a plurality of open position profiles and wherein the top plate comprises a plurality of cogs, each profile further comprising a ramp configured to be engaged by one of the cogs of the top plate.

5. The lock open device of claim 1 , wherein:
the collar further comprises an anti-return profile; and
the cog is configured to land in an anti-return slot in the anti-return profile after being rotated out of engagement with the open position profile.

6. The lock open device of claim 5 , wherein the anti-return slot is configured to mate with the cog to restrict rotational movement of the collar with respect to the can.

7. The lock open device of claim 1 , further comprising a biasing mechanism configured to bias the top plate down on the collar.

8. The lock open device of claim 7 , further comprising a rod configured to engage with the biasing mechanism and a screw configured to allow displacement of the top plate from the can by overcoming a resistance of the biasing mechanism.

9. The lock device of claim 1 , further comprising one or more dowel pins configured to be placed within holes of a flowtube in order to align the can within the lock open device.

Assignees

• Onesubsea Ip Uk Ltd

Inventors

• Evans John T
• Lam Cody C

Classifications

• E21B23/01 Primary

  for anchoring the tools or the like (E21B23/02 - E21B23/06 take precedence; anchoring of drives in the borehole E21B4/18) · CPC title

• E21B43/10

  Setting of casings, screens, liners {or the like} in wells · CPC title

• E21B23/006 Primary

  "J-slot" systems, i.e. lug and slot indexing mechanisms · CPC title