Well tools

Claim 2

Well apparatus adapted to be operated in a well bore, including: first and second tubular body means releasably connected in axially aligned relationship; normally retracted expansible gripping means and sealing means on said first body means; normally retracted expansible holddown means on said second body means; means on said second body means for connecting it to a well flow conductor for moving said first and second body means into said well bore; and fluid pressure responsive actuator means on said second body means operable to expand said gripping means and said sealing means on said first body means to gripping and sealing engagement with the wall of said well bore; said second body means being disconnectable from said first body means upon longitudinal movement of said second body means relative to said first body means.

Claim 3

Well apparatus of the character set forth in claim 1, wherein said second body means has initially closed, openable, and reclosable lateral flow port means provided thereon for communicating the interior of said second body means with the well bore exteriorly of said second body means above said sealing means of said first body means when said lateral port means is open for establishing circulation of fluids through said flow conductor and said well bore above said sealing means.

Claim 4

Well apparatus of the character set forth in claim 1, wherein said first body means has initially closed, openable, and reclosable lateral flow port means providing a fluid passage between the interior of said first body means and the well bore below said sealing means when said later said lateral flow means is open.

Claim 5

Well apparatus of the character set forth in claim 3, wherein plug means is provided in the bore of the said first body means to close the bore of said first body means below said lateral flow port means of said first body means.

Claim 6

Well apparatus of the character set forth in claim 2, wherein closing means is provided to reclose the lateral flow port means of said second body means after the same has been opened.

Claim 7

Well apparatus of the character set forth in claim 1, wherein connecting means are provided on said first body means and said second body means releasably connecting the same, said connecting means including yieldable means constructed to fail when stressed to a predetermined value to effect disconnection of said second body means from said first body means when said second body means is moved longitudinally relative to said first body means.

Claim 8

Well apparatus of the character set forth in claim 4, wherein sleeve port closure means is provided on said first body means movable to close said lateral flow port means of said first body means when said second body means is disconnected from said first body means.

Claim 9

Well apparatus of the character set forth forth in claim 7, means on said sleeve port closure means and means on said second body means coengageable to move said sleeve port closure means to position closing said lateral flow port means of said first body means upon withdrawal of said second body means from said first body means.

Claim 10

Well apparatus of the character set forth in claim 7, including: laterally movable connector means carried by said sleeve port closure means, said connector means having inner and outer bosses formed thereon; flange means on the lowEr portion of said second body means engageable with said inner bosses of said connector means of said sleeve port closure means to move said closure means from open to closed position; recess means provided in said first body means for receiving said outer bosses of said connector means of said sleeve port closure means when said closure means is disposed in a position closing said lateral flow port means of said first body means, whereby said connector means may be moved laterally to a position releasing the inner bosses of said connector means from engagement with said flange means of said second body means to permit withdrawal of said second body means from said first body means, leaving said sleeve closure means closing said lateral flow port means and said plug means closing the bore of said first body means below said sleeve closure means.

Claim 11

Well apparatus of the character set forth in claim 1, wherein said hold down means on said second body means comprises normally retracted gripping means exposed to and expandable by fluid pressure in said second body means into engagement with the inner wall of said well bore to hold said second body means against longitudinal displacement in said well bore.

Claim 12

Well apparatus of the character set forth in claim 10, including: sleeve closure means in said second body means initially closing the lateral flow port means thereof and shiftable to a position opening said port means; and means for said shifting said sleeve closure means from to port-closing port-opening position, said shifting means being insertable into said second body means through said flow conductor to engage said sleeve closure means for moving the same in response to fluid pressure.

Claim 13

Well apparatus of the character set forth in claim 11, including closure sleeve means for reclosing said lateral flow port means of said second body means after the same has been opened, said closure sleeve means being insertable into said second body means through said flow conductor.

Claim 14

Well apparatus of the character set forth in claim 10, including yieldable barrier means disposed in said second tubular body means between said hold down means and the bore of said second body means for excluding actuating fluids, cement, or other foreign matter from direct contact with said hold down means.

Claim 15

Well apparatus adapted to be operated in a well bore, including: well packer and plug tool means; operator and running tool means; means releasably connecting said well packer and plug tool means and said operator and running tool means in axially aligned relationship; normally retracted expansible sealing means on said packer and plug tool; normally retractor expansible gripping means on said packer and plug tool above and below said sealing means; actuator means on said operator and running tool engageable with said upper gripping means of said pacer packer and plug tool and operable by fluid pressure to move said gripping means and said sealing means of said packer and plug tool to gripping and sealing position; normally retracted fluid pressure expansible hold down means on said operator and running tool; lateral flow port sleeve valve means on said operator and running tool above said packer and plug tool; flow conductor means connected to the upper end of said operator and running tool; hanger means on said flow conductor for suspending the same from a wellhead at the upper end of the well bore; and means insertable into said packer and plug tool for plugging the same; said means releasably connecting said operator and running tool to said packer and plug tool being releasable upon longitudinal movement of said operator and running tool relative to said packer and plug tool after said packer and plug tool is anchored in sealing position in said well and plugged.

Claim 16

Well apparatus adapted to be operated in a well bore, including: well packer and plug tool means; operator and running tool means; means releasably connecting said well packer and plug tool means and said operator and running tool means in axially aligned relationship; normally retracted expansible sealing means on said packer and plug tool; normally retractor expansible gripping means on said packer and plug tool above and below said sealing means; actuator means on said operator and running tool engageable with said upper gripping means of said pacer packer and plug tool and operable by fluid pressure to move said gripping means and said sealing means of said packer and plug tool to gripping and sealing position; normally retracted fluid pressure expansible hold down means on said operator and running tool; lateral flow port sleeve valve means on said operator and running tool above said packer and plug tool; flow conductor means connected to the upper end of said operator and running tool; hanger means on said flow conductor for suspending the same from a wellhead at the upper end of the well bore; and means insertable into said packer and plug tool for plugging the same; said means releasably connecting said operator and running tool to said packer and plug tool being releasable upon longitudinal movement of said operator and running tool relative to said packer and plug tool after said packer and plug tool is anchored in sealing position in said well and plugged.

Claim 19

The method of claim 15, including the additional steps of: establishing a fluid passageway between the bore of said flow conductor and the well bore above said well tool; and circulating fluid through said well bore above said well tool, through said fluid passageway and through said flow conductor to kill said well.

Claim 20

The method of claim 16, including the additional steps of: closing said fluid passageway between said flow conductor and said well bore; and forcing cement through said flow conductor and said well tool to plug said well bore below said well tool.

Claim 21

The method of claim 17, including the additional steps of: plugging the bore of said well tool; disconnecting said holddown and setting tool from said well tool; and removing said flow conductor and holddown and setting tool from said well.

Claim 22

The method of claim 17, including the additional steps of: plugging the bore of said well tool; disconnecting said holddown and setting tool from said weld tool, circulating control fluid through said well bore and SAID flow conductor above said well tool to remove unused cement from said well; and removing said flow conductor and said holddown and setting tool from said well.

Claim 23

The method of claim 15, including the additional steps of: establishing a fluid passageway between the bore of said holddown and setting tool and the well bore above said packer and plug well tool; injecting cement into the upper end of said flow conductor to displace the contents of the flow conductor through said fluid passageway into the well bore above said well tool; closing said fluid passageway; forcing a portion of said cement through said well tool into the well bore below said well tool to plug the well bore below said well tool; reopening said fluid passageway; injecting fluid into the upper end of the well bore exteriorly of the flow conductor and through said fluid passageway to displace the unused cement in the flow conductor to the surface.

Claim 24

The method of claim 20, including the additional steps of: plugging the bore of said well tool; disconnecting said holddown and setting tool from said well tool; and removing said flow conductor and and setting tool from said well.

Claim 25

Them The method of claim 15, including the additional steps of: establishing a fluid a passageway between the bore of said holddown and setting tool and the well bore above said well tool; injecting a predetermined amount of cement into the upper end of said flow conductor to displace the contents of said flow conductor through said fluid passageway into the well bore above said well tool; closing said fluid passageway; forcing fluid into the upper end of the flow conductor for forcing said cement through said well tool into said earth formation until a desired predetermined squeeze pressure is reached; maintaining said squeeze pressure plugging the well bore at said well tool; and disconnecting said holddown and setting tool from said well tool and removing said flow conductor and holddown and to setting tool from said well, leaving said well tool in said well bore.

Claim 26

The method of claim 15, including the additional steps of: establishing a fluid passageway between the bore of said holddown and setting tool and the well bore above said well tool; forcing fluid into the upper end of said well bore exteriorly of said flow conductor and through saId fluid passageway to displace the contents of said well bore above said well tool into said flow conductor to the upper end of said flow conductor; injecting cement into the upper end of the flow conductor to displace the contents of said flow conductor through said passageway and into the well bore above said well tool; closing said fluid passageway; forcing fluid into the upper end of said flow conductor and forcing cement through said well tool into said earth formation until a desired predetermined squeeze pressure is reached; maintaining said squeeze pressure; plugging said well bore at said well tool; disconnecting said holddown and setting tool from said well tool; and removing said flow conductor and holddown and setting tool from said well, leaving said well tool in place in said well bore to plug the same.

Claim 27

In the method of claim 22, the step of: circulating fluid down said well bore exteriorly of said flow conductor into the lower end of said holddown and setting tool and up through said flow conductor to remove unused cement from the well after disconnecting said holddown and setting tool from said well tool and before removing said flow conductor and holddown and setting tool from said well.

Claim 28

In the method of claim 23, the step of of: circulating fluid down said well bore exteriorly of said flow conductor into the lower end of said holddown and setting tool and up through said flow conductor to remove unused cement from the well, after disconnecting said holddown and setting tool from said well tool and before removing said flow conductor and holddown and setting tool from said well.