Hanger and packer well tool

Claim 2

A well tool engagable with and between an elongate, vertical, tubular well casing and an elongate, vertical, tubular well liner engaged within and depending from the casing and comprising an elongate, vertical, tubular barrel fixed on the upper end of the liner and arranged in the casing in spaced relationship therewith, an elongate, tubular mandrel slidably engaged in the barrel and projecting from the upper end thereof; the barrel having a plurality of circumferentially spaced radially outwardly opening slip recesses with upwardly and outwardly inclined bottom surfaces, a wedge-shaped casing engaging slip engaged in each slip recess and having an elongate, vertical finger projecting upwardly therefrom, spring means carried by and between the barrel and the slip and normally yieldingly urging the slips upwardly and outwardly in the slip recesses and relative to the barrel and the casing; an elongate, vertical, annular actuating sleeve adjacent the upper end of the barrel and rotatably carried by and about the mandrel, said sleeve having downwardly opening finger receiving notches normally receiving the upper ends of the fingers and normally holding the slip down in the slip recesses, said sleeve having elongate, vertical finger receiving channels spaced circumferentially from said finger receiving notches and shiftable into alignment with said fingers upon rotation of the sleeve relative to the barrel whereupon the fingers are urged out of engagement in the finger receiving notches and shift upwardly in the finger receiving channels.

Claim 3

A structure as set forth in claim 1 wherein the upper ends of the fingers and the finger receiving notches have normally opposing, upwardly and circumferentially inclined cam faces and said slips have bottom edges which are normally spaced above opposing bottom edges of their related slip recesses a distance at least equal to the distance the upper ends of the fingers enter the finger receiving notches.

Claim 4

A structure as set forth in claim 1 wherein the actuating sleeve has circumferentially extending lug receivinG notches with horizontal upwardly disposed bottom edges and circumferentially spaced, circumferentially disposed first and second stop shoulders, said mandrel has radially outwardly projecting lugs projecting into said lug receiving notches to slidably engage the bottom edges thereof and normally engaging the first stop shoulders and engagable with the second stop shoulders when the actuating sleeve is rotated relative to the mandrel and the barrel and the fingers are aligned with the channels.

Claim 5

A structure as set forth in claim 1 wherein the upper ends of the fingers and the finger receiving notches have normally opposing, upwardly and circumferentially inclined cam faces and said slips have bottom edges which are normally spaced above opposing bottom edges of their related slip recesses a distance at least equal to the distance the upper ends of the fingers enter the finger receiving notches, said actuating sleeve has circumferentially extending lug receiving notches with horizontal upwardly disposed bottom edges and circumferentially spaced, circumferentially disposed first and second stop shoulders, said mandrel has radially outwardly projecting lugs projecting into said lug receiving notches to slidably engage the bottom edges thereof and normally engaging the first stop shoulders and engagable with the second stop shoulders when the actuating sleeve is rotated relative to the mandrel and the barrel and the fingers are aligned with the channels.

Claim 6

A structure as set forth in claim 1 including means releasably coupling the upper end of the mandrel with the lower end of a fluid conducting tubing extending through the casing, said actuating sleeve has means frictionally engaging the casing to yieldingly hold said sleeve against rotation upon rotation of said tubing string, mandrel and barrel.

Claim 7

A structure as set forth in claim 1 wherein the upper ends of the fingers and the finger receiving notches have normally opposing, upwardly and circumferentially inclined cam faces and said slips have bottom edges which are normally spaced above opposing bottom edges of their related slip recesses a distance at least equal to the distance the upper ends of the fingers enter the finger receiving notches, means releasably coupling the upper end of the mandrel with the lower end of a fluid conducting tubing extending through the casing, said actuating sleeve has means frictionally engaging the casing to yieldingly hold said sleeve against rotation upon rotation of said tubing string, mandrel and barrel.

Claim 8

A structure as set forth in claim 1 wherein the actuating sleeve has circumferentially extending lug receiving notches with horizontal upwardly disposed bottom edges and circumferentially spaced, circumferentially disposed first and second stop shoulders, said mandrel has radially outwardly projecting lugs projecting into said lug receiving notches to slidably engage the bottom edges thereof and normally engaging the first stop shoulders and engagable with the second stop shoulders when the actuating sleeve is rotated relative to the mandrel and the barrel and the fingers are aligned with the channels, means releasably coupling the upper end of the mandrel to the lower end of a fluid conducting tubing extending through the casing, said actuating sleeve has means frictionally engaging the casing to yieldingly hold said sleeve against rotation upon rotation of said tubing string, mandrel and barrel.

Claim 9

A structure as set forth in claim 1 wherein the upper ends of the fingers and the finger receiving notches have normally opposing, upwardly and circumferentially inclined cam faces and said slips have bottom edges which are normally spaced above opposing bottom edges of their related slip recesses a distance at least equal to the distance the upper ends of the fingers enter the finger receiving notches, said actuating sleeve has circumferentially extending lug receiving notches with horizontal upwardly disposed bottom edges and circumferentially spaced, circumferentiaLly disposed first and second stop shoulders, said mandrel has radially outwardly projecting lugs projecting into said lug receiving notches to slidably engage the bottom edges thereof and normally engaging the first stop shoulders and engagable with the second stop shoulders when the actuating sleeve is rotated relative to the mandrel and the barrel and the fingers are aligned with the channels, means releasable coupling the upper end of the mandrel with the lower end of a fluid conducting tubing extending through the casing, said actuating sleeve has means frictionally engaging the casing to yieldingly hold said sleeve against rotation upon rotation of said tubing string, mandrel and barrel.

Claim 10

A structure as set forth in claim 1 wherein the actuating sleeve has circumferentially extending lug receiving notches with horizontal upwardly disposed bottom edges and circumferentially spaced, circumferentially disposed first and second stop shoulders, said mandrel has radially outwardly projecting lugs projecting into said lug receiving notches to slidably engage the bottom edges thereof and normally engaging the first stop shoulders and engagable with the second stop shoulders when the actuating sleeve is rotated relative to the mandrel and the barrel and the fingers are aligned with the channels, said barrel has an elongate, annular, radially outwardly opening packer recess below the slip recesses, radial opening longitudinal block slots communicating with the packer recess, an annular actuating ring normally in and about the upper end of the packer recess, blocks slidably engaged in the block slots and extending between and fixed to the mandrel and the actuating ring and a sleeve-like body of deformable expansible packing material in the packer recess and in the block slots below said ring and the blocks, said blocks and ring adapted to displace said packing material downwardly and radially outwardly in and relative to the packer recess to seal with said casing upon downward shifting of the mandrel in the barrel, said actuating sleeve having vertical lug receiving slots extending downwardly from the ends of the lug receiving notches adjacent the second stop shoulders thereof to accomodate the lugs upon downward shifting of the mandrel in the barrel.

Claim 11

A structure as set forth in claim 9 wherein means releasably coupling the upper end of the mandrel with the lower end of a fluid conducting tubing extending through the casing, said actuating sleeve has means frictionally engaging the casing to yieldingly hold said sleeve against rotation upon rotation of said tubing string, mandrel and barrel.

Claim 12

A structure as set forth in claim 10 wherein said setting means includes a releasing nut with a central polygonal opening thread into the upper end of the mandrel and an elongate polygonal fluid conducting kelly fixed to the lower end of the tubing string and slidably engaged through and establishing rotary driving engagement with the releasing nut.