Well packer apparatus

Claim 2

A tension-set well packer comprising: a mandrel; Shoulder means on said mandrel; a body having a wall and encircling said mandrel and forming a passageway therebetween; releasable means connecting said mandrel to said body; sealing means encircling said body; an upper thimble encircling said body above and abuttable with said sealing means and engageable with said shoulder means on said mandrel; a lower thimble on said body below and abuttable with said sealing means; selectively operable valve means for controlling flow through said passageway; a seal between said body and said mandrel; and port means through the wall of said body, said port means located between said seal means and said seal providing communication from said passageway to the exterior of said body.

Claim 3

The packer according to claim 1 wherein said body has at least one additional port communicating with said passageway, said sealing means being located between said additional port and said seal.

Claim 4

The packer according to claim 1 wherein said upper thimble has at least one port communicating with said port means.

Claim 5

The packer according to claim 1 wherein said releasable means for connecting said mandrel and said body comprises: a jay-latch in one of said mandrel or said body; and a cooperating jay-latch pin in the other of said mandrel or said body.

Claim 6

The packer according to claim 4 wherein said releasable means further includes shear means between said mandrel and said body.

Claim 7

The packer according to claim 4 wherein said releasable means further includes spring loaded means releasably connecting said body to said mandrel, said spring loaded releasable means being releasable by longitudinal thrust between said body and said mandrel.

Claim 8

The packer according to claim 1 wherein: said valve means is open when said body and said mandrel are in a first position; and said valve means is closed when said body is moved longitudinally with respect to said mandrel to a second position.

Claim 9

The packer according to claim 6 wherein: said releasable means hold said body and said mandrel in said first position when said releasable means is connected; and said releasable means permits said body and said mandrel to move to said second position when said releasable means is released.

Claim 10

The packer according to claim 8 wherein said valve means comprises: a seal surface formed inside said body; and a seal ring mounted on said mandrel and adapted to be sealingly engaged with said seal surface, when said body and said mandrel are in said second position.

Claim 11

The packer according to claim 1 further comprising: said body having a plurality of cylindrical bores therein opening to the interior of said body; and gripping members in said bores expandable against the well casing in response to fluid pressure within said body and bores.

Claim 12

A tension-set well packer adapted to be set in well casing comprising: a mandrel; shoulder means on said mandrel; a body having a wall exterior to said mandrel and forming a passageway therebetween; releasable means connecting said mandrel to said body; sealing means having first and second ends encircling said body; a first thimble exterior to said body abuttable with said first end of said sealing means and engageable with said shoulder means on said mandrel; a second thimble on said body and abuttable with said second end of said sealing means; selectively operable valve means for controlling flow through said passageway; a seal between said body and said mandrel; and port means through the wall of said body, said port means located between said seal means and said seal providing communication from said passageway to the exterior of said body.

Claim 13

A tension-set well packer adapted to be set in well casing comprising: a mandrel; shoulder means on said mandrel; a body having a wall exterior to said mandrel and forming a passageway therebetween; releasable means connecting said mandrel to said body; sealing means having first and second ends encircling said body; a first thimble exterior to said body abuttable with said first end of said sealing means and engageable with said shoulder means on said mandrel; a second thimble on said body and abuttable with said second end of said sealing means; selectively operable valve means for controlling flow through said passageway; a seal between said body and said mandrel; and port means through the wall of said body, said port means located between said seal means and said seal providing communication from said passageway to the exterior of said body.

Claim 14

The packer according to claim 11 further comprising: said body having at least one cylindrical bore therein opening to the interior of said body; and at Least one gripping member in said bore expandable against the well casing in response to fluid pressure within said body and bore.

Claim 15

The packer according to claim 10 further comprising: said mandrel having at least one cylindrical bore therein opening to the interior of said mandrel; and at least one gripping member in said bore expandable against the well casing in response to fluid pressure within said body and bore.

Claim 16

A tension-set well packer adapted to be set in a well bore having pipe therein connectable to the packer and restrained against upward movement below the packer, and having pipe connectable to the top of the packer and extending to the surface of the well bore, said packer comprising: a mandrel connectable to the pipe below the packer; shoulder means on said mandrel; a body connectable to the lower end of the pipe extending to the surface of the well bore; said body having a wall and encircling said mandrel and forming an annular passageway therebetween; releaseable means connecting said mandrel to said body; sealing means encircling said body; an upper thimble encircling and slidable on said body above and abuttable with said sealing means and engageable with said shoulder means on said mandrel; a lower thimble on said body below and abuttable with said sealing means; selectively operable valve means for controlling flow through said passageway; a seal between said body and said mandrel; and port means through the wall of said body, said port means located between said sealing means and said seal providing communication between said passageway to the exterior of said body.

Claim 17

A tension-set well packer adapted to be set in a well bore having pipe therein connectable to the packer and restrained against upward movement below the packer, and having pipe connectable to the top of the packer and extending to the surface of the well bore, said packer comprising: a mandrel connectable to the pipe below the packer; shoulder means on said mandrel; a body connectable to the lower end of the pipe extending to the surface of the well bore; said body having a wall and encircling said mandrel and forming an annular passageway therebetween; releaseable means connecting said mandrel to said body; sealing means encircling said body; an upper thimble encircling and slidable on said body above and abuttable with said sealing means and engageable with said shoulder means on said mandrel; a lower thimble on said body below and abuttable with said sealing means; selectively operable valve means for controlling flow through said passageway; a seal between said body and said mandrel; and port means through the wall of said body, said port means located between said sealing means and said seal providing communication between said passageway to the exterior of said body.

Claim 18

A tension-set well packer adapted to be set in well casing comprising: a mandrel; shoulder means on said mandrel; a body having a wall exterior to said mandrel and forming a passageway therebetween; releasable means connecting said mandrel to said body; sealing means encircling said body; a first thimble exterior to said body abuttable with said sealing means and engageable with said shoulder means on said mandrel; a second thimble on said body and abuttable with said sealing means; selectively operable valve means for controlling flow through said passageway; a seal between said body and said mandrel; and port means through the wall of said body, said port means located between said seal means and said seal providing communication from said passageway to the exterior of said body.

Claim 19

A tension-set well packer adapted to be set in well casing comprising: a mandrel; shoulder means on said mandrel; a body having a wall exterior to said mandrel and forming a passageway therebetween; releasable means connecting said mandrel to said body; sealing means encircling said body; a first thimble exterior to said body abuttable with said sealing means and engageable with said shoulder means on said mandrel; a second thimble on said body and abuttable with said sealing means; selectively operable valve means for controlling flow through said passageway; a seal between said body and said mandrel; and port means through the wall of said body, said port means located between said seal means and said seal providing communication from said passageway to the exterior of said body.