초록 ▼

Apparatus for effecting locking engagement with a well conduit recess comprises a locking tool having radially shiftable locking lugs which are shiftable to a locked position in the conduit recess by downward movement of a lock mandrel. A running tool is secured to the lock mandrel by a plurality of

Apparatus for effecting locking engagement with a well conduit recess comprises a locking tool having radially shiftable locking lugs which are shiftable to a locked position in the conduit recess by downward movement of a lock mandrel. A running tool is secured to the lock mandrel by a plurality of radially shiftable latching elements. Downward movement of the running tool produced by wireline manipulation will effect the downward displacement of the lock mandrel to shift the locking lugs outwardly into engagement with the latching recess; however, the latching elements will not release the lock mandrel from the running tool until full radial engagement of the locking lugs in the conduit locking recess has been achieved.

대표청구항 ▼

For use with a well locking tool insertable in a well conduit and having an external shoulder engagable with a no-go shoulder in the well conduit, radially shiftable lock elements for engaging a conduit recess and an axially shiftable lock mandrel movable from a first position to a second position t

For use with a well locking tool insertable in a well conduit and having an external shoulder engagable with a no-go shoulder in the well conduit, radially shiftable lock elements for engaging a conduit recess and an axially shiftable lock mandrel movable from a first position to a second position to radially shift said lock elements into locking engagement with said conduit recess, a run-in tool comprising: a tubular housing having wireline engagable means on the upper end thereof; a plurality of peripherally spaced latch windows in the lower portions of said tubular housing; a plurality of latch elements respectively radially movable relative to said latch windows; a latch operating sleeve telescopically cooperating with the bore of said tubular housing; a bearing surface on said latch operating sleeve engagable, in one axial position of said latch operating sleeve, with said latch elements to secure same in a radially expanded position of engagement with the lock mandrel for run-in purposes; first shearable means securing said latch operating sleeve to said tubular housing in said one axial position; second shearable means for securing said latch operating sleeve to said locking tool; said second shearing means being shearable only by upward jarring forces, whereby the application of downward jarring forces to said run-in tool after said locking tool engages said conduit no-go shoulder effects the shearing of said first shearable means and the downward movement of said tubular housing relative to both said lock mandrel and said latch operating sleeve; a downwardly facing surface on said tubular housing engagable with said lock mandrel to shift same downwardly and thus radially shift said lock elements into the conduit recess; and recess means on said latch operating sleeve below said bearing surface alignable with said latch elements when said lock mandrel is moved by said tubular housing to said second position, thereby permitting disengagement of said latch elements from said well locking tool.