Retrievable insert landing assembly

A retrievable insert landing asembly for use in a packer bore receptacle in a well bore where said packer bore receptacle has a polished bore, a landing seat and a latching groove disposed intermediate of the length of said polished bore, said retrievable insert landing assembly including:

• a telescopically coupled setting sleeve and setting collar, said setting collar having a lower downwardly facing seating surface for engagement with an upwardly facing landing seat in a packer bore receptacle;
• said setting collar having latching means which are radially movable between extended and retracted positions relative to said setting collar, said latching means being responsive to longitudinal movement of said setting sleeve so that in one longitudinal telescopic position of said setting sleeve, said latching means are retracted and in another longitudinal telescopic position of said setting sleeve, said latching means are extended into a locking relationship with a latching groove in a packer bore receptacle;
• release means for releasably interconnecting said setting sleeve and setting collar in one of said longitudinal positions to retain said latching means in an extended position;
• means for temporarily closing off the cross-section of said setting sleeve so that hydraulic pressure can be applied to move said setting sleeve between said telescopic positions;
• tubular extension means slidably and sealingly received in the upper end of said setting collar above said means for temporarily closing off the cross-section of said setting sleeve;
• tool means for releasably coupling said tubular extension means to the upper end of said setting collar, and said tool means being operative upon rotation to release said tubular extension means from said setting collar for sliding and sealing movement relative to said setting collar.

A retrievable landing assembly for use in a packer bore receptacle in a well bore where said packer bore receptacle has a polished bore, a landing seat and a latching groove disposed intermediate of the length of said polished bore, said retrievable landing assembly including:

• a telescopically coupled setting sleeve and setting collar, said setting collar having a lower downwardly facing seating surface for engagement with an upwardly facing landing seat in a packer bore receptacle;
• said setting collar having latching means which are radially movable between extended and retracted positions relative to said setting collar, said latching means being responsive to longitudinal movement of said setting sleeve so that in one longitudinal telescopic position of said setting sleeve, said latching means are retracted and in another longitudinal telescopic position of said setting sleeve, said latching means are extended into a locking relationship with a latching groove in a packer bore receptacle;
• release means below said latching means for releasably interconnecting said setting sleeve and setting collar in longitudinal positions where said latching means are in an extended position, said release means being separable upon the application of a predetermined force to permit movement of said setting sleeve relative to said setting collar for permitting retraction of said latching means;
• and
• releasable barrier means in said setting sleeve adapted to receive a sealing element for closing the bore of said setting sleeve so that a first hydraulic pressure, when applied, can produce longitudinal movement between said setting collar and setting sleeve and so that upon the application of a second and greater hydraulic pressure said barrier means is released to pass downwardly through said setting sleeve.