Multiple acting lock for gravel pack system

Details Multiple acting lock for gravel pack system Multiple acting lock for gravel pack system

1991-07-26

1993-01-19

Bui, Thuy M.

Wells

Expansible anchor or casing

Fluid pressure actuated

166217, 166237, E21B 2304

Patent

active

051800101

ABSTRACT:
A multiple acting lock is provided which prevents premature setting of the packer of a gravel pack tool by the setting piston of a setting tool. The lock comprises a locking cylinder which when in the locked position rotationally locks the setting tool with the gravel pack tool thereby allowing rotation of the tool during tripping to facilitate working the tool past tight spots. The lock also longitudinally locks the setting sleeve of the gravel pack tool to prevent premature setting of the packer of the gravel pack tool. The locking mechanism of the setting sleeve comprises keys located in keyholes and a sleeve inside the setting sleeve which protrude and engage with the setting sleeve. The locking cylinder when in a locked position covers the inside of the keyholes retaining the keys in engagement with the setting sleeve. When the locking cylinder is hydraulically moved to the unlocked position the keys slide inward out of the keyholes and out of engagement with the setting sleeve.

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