Downhole packer tool

Patent metadata

Field	Value
Publication number	US-2016376868-A1
Application number	US-201615192198-A
Country	US
Kind code	A1
Filing date	Jun 24, 2016
Priority date	Jun 24, 2015
Publication date	Dec 29, 2016
Grant date	—

Abstract

A packer comprising a mandrel having a radially directed port disposed therein and a passageway axially disposed therein and a packer element disposed around a portion of the mandrel. The packer further includes a housing disposed around a portion of the mandrel creating an annulus area between the mandrel and the housing, the housing is disposed adjacent to the packer element to squeeze the packer element and axially expand the annulus area when fluid flows through the radially directed port and into the annulus area above a fluid pressure threshold. The packer can be included in a downhole assembly having an upper packer and a lower packer. A method of using the packer includes placing the packer into a wellbore to seal one zone from another and pumping fluid into the packer to set the packer element against a casing in the wellbore. A method of using the assembly that incorporates the upper packer and the lower packer is also described.

First claim

What is claimed is:

1 . A packer, the packer comprising:
a mandrel having a radially directed port disposed therein and a passageway axially disposed therein; a packer element disposed around a portion of the mandrel; and a housing disposed around a portion of the mandrel creating an annulus area between the mandrel and the housing, the housing is disposed adjacent to the packer element to squeeze the packer element and axially expand the annulus area when fluid flows through the radially directed port and into the annulus area above a fluid pressure threshold.

2 . The packer of claim 1 further comprising:
a second mandrel attached to the first mandrel on a first end of the second mandrel, the second mandrel having a radial directed port disposed therein and a passageway axially disposed therein; and
a second annulus area disposed between the second mandrel and the housing, the second annulus area axially expandable as fluid is flowed through the passageway and the radially directed port of the second mandrel into the second annulus area above the fluid pressure threshold.

3 . The packer of claim 2 further comprising:
a third mandrel attached to the second mandrel; and
a spring disposed around a portion of the third mandrel and inside the housing to push the housing away from the packer element when fluid inside the packer falls below the fluid pressure threshold.

4 . The packer of claim 1 wherein the housing is constructed of multiple housing portions and the housing can have multiple radially directed ports therein.

5 . The packer of claim 3 wherein the first mandrel is attached to a top sub or includes a top sub portion built therein for attachment to other downhole tools disposed above the packer and the third mandrel is attached to a bottom sub for attachment to other downhole tools disposed below the packer.

6 . The packer of claim 3 wherein the first mandrel is attached to a bottom sub for attachment to other downhole tools disposed below the packer and the third mandrel is attached to a top sub for attachment to other downhole tools disposed above the packer.

7 . The packer of claim 6 wherein the packer further includes a check valve to prevent fluid from flowing out of the bottom of the packer and allow fluid to flow up into the packer from below the packer.

8 . The packer of claim 7 where the check valve comprises:
a seat and a fluid blocking member disposed uphole of the seat to engage the seat to prevent fluid from flow down and out of the packer; and
an encapsulation device for housing the fluid blocking member to prevent the fluid blocking member from escaping the check valve and adjacent to the seat.

9 . A method, the method comprising:
placing a packer into a wellbore to seal one zone from another, the packer comprising:
a mandrel having a radially directed port disposed therein and a passageway axially disposed therein;
a packer element disposed around a portion of the mandrel; and
a housing disposed around a portion of the mandrel creating an annulus area between the mandrel and the housing, the housing is disposed adjacent to the packer element to squeeze the packer element and axially expand the annulus area when fluid flows through the radially directed port and into the annulus area above a fluid pressure threshold; and
pumping fluid into the packer to set the packer element against a casing in the wellbore.

10 . The method of claim 9 further comprising:
a second mandrel attached to the first mandrel on a first end of the second mandrel, the second mandrel having a radially directed port disposed therein and a passageway axially disposed therein; and
a second annulus area disposed between the second mandrel and the housing, the second annulus area axially expandable as fluid is flowed through the passageway and the radially directed port of the second mandrel into the second annulus area above the fluid pressure threshold.

11 . The method of claim 10 further comprising:
a third mandrel attached to the second mandrel; and
a spring disposed around a portion of the third mandrel and inside the housing to push the housing away from the packer element when fluid inside the packer falls below the fluid pressure threshold.

12 . The method of claim 9 wherein the housing is constructed of multiple housing portions and the housing can have multiple radially directed ports therein.

13 . The method of claim 11 wherein the first mandrel is attached to a top sub or includes a top sub portion built therein for attachment to other downhole tools disposed above the packer and the third mandrel is attached to a bottom sub for attachment to other downhole tools disposed below the packer.

14 . The method of claim 11 wherein the first mandrel is attached to a bottom sub for attachment to other downhole tools disposed below the packer and the third mandrel is attached to a top sub for attachment to other downhole tools disposed above the packer.

15 . The method of claim 14 wherein the packer further includes a check valve to prevent fluid from flowing out of the bottom of the packer and allow fluid to flow up into the packer from below the packer.

16 . The method of claim 15 where the check valve comprises:
a seat and a fluid blocking member disposed uphole of the seat to engage the seat to prevent fluid from flow down and out of the packer; and
an encapsulation device for housing the fluid blocking member to prevent the fluid blocking member from escaping the check valve and adjacent to the seat.

17 . A bottom hole assembly, the assembly comprising:
an upper packer for sealing an upper portion of a zone in a casing, the upper packer comprising:
a mandrel having a radially directed port disposed therein and a passageway axially disposed therein;
a packer element disposed around a portion of the mandrel; and
a housing disposed around a portion of the mandrel creating an annulus area between the mandrel and the housing, the housing is disposed adjacent to the packer element to squeeze the packer element and axially expand the annulus area when fluid flows through the radially directed port and into the annulus area above a fluid pressure threshold;
a lower packer for sealing a lower portion of a zone in the casing, the lower packer comprising:
a mandrel having a radially directed port disposed therein and a passageway axially disposed therein;
a packer element disposed around a portion of the mandrel; and
a housing disposed around a portion of the mandrel creating an annulus area between the mandrel and the housing, the housing is disposed adjacent to the packer element to squeeze the packer element and axially expand the annulus area when fluid flows through the radially directed port and into the annulus area above a fluid pressure threshold; and
a treatment tool disposed between the upper packer and the lower packer to treat a formation the casing is disposed in.

18 . The assembly of claim 17 wherein the upper packer and the lower packer comprise:
a second mandrel attached to the first mandrel on a first end of the second mandrel, the second mandrel having a radially directed port disposed therein and a passageway axially disposed therein; and
a second annulus area disposed between the second mandrel and the housing, the second annulus area axially expandable as fluid is flowed through the passageway and the radially directed port of the second mandrel into the second annulus area above the fluid pressure threshold.

19 . The assembly of cl

Assignees

• Thru Tubing Solutions Inc

Inventors

• Manke Kevin

Classifications

• E21B2200/04

  Ball valves · CPC title

• E21B33/124

  Units with longitudinally-spaced plugs for isolating the intermediate space · CPC title

• E21B34/08 Primary

  responsive to flow or pressure of the fluid obtained (E21B34/10 takes precedence) · CPC title

• E21B33/1285

  by fluid pressure · CPC title

• E21B2034/002

  Fixed Constructions · mapped topic