Patents-Review.com
ClassID:

135490 ⎘

E21B33/1216 - CPC Classification

Classification description:

Sealing or packing boreholes or wells in the borehole; Packers; Plugs characterised by the construction of the sealing or packing means Anti-extrusion means, e.g. means to prevent cold flow of rubber packing

Recent Application in this class:
#1
20260146508
2026-05-28

TWO-PIECE, SPLIT BACKUP SHOE FOR PACKER ASSEMBLIES

 #2
20260125963
2026-05-07

MAGNETICALLY GRADED ADAPTOR FOR A WELLBORE SEALING SYSTEM

 #3
20260036014
2026-02-05

RETRIEVABLE PACKER ELEMENT - ANTI EXTRUSION BARRIER

 #4
20260036007
2026-02-05

ROLL-OUT APPARATUS, METHOD, AND SYSTEM

 #5
20250215763
2025-07-03

PACKER BACK-UP SHOE

 #6
20250207473
2025-06-26

GARTER SPRING INCLUDING OUTER, INNER AND MIDDLE COILED SPRING MEMBERS

 #7
20250129849
2025-04-24

METAL END CAP SEAL

 #8
20250075587
2025-03-06

ANCHORING PLUGGING DEVICES TO PERFORATIONS

 #9
20250034965
2025-01-30

HIGH EXPANSION PACKER ASSEMBLY

 #10
20250027378
2025-01-23

PACKER ASSEMBLY WITH AN ANTI-EXTRUSION ASSEMBLY

 #11
20240392642
2024-11-28

ROLL-OUT APPARATUS, METHOD, AND SYSTEM

 #12
20240384620
2024-11-21

Seal element with profiled surface for a downhole tool in a wellbore

 #13
20240209714
2024-06-27

SEALING ELEMENT WITH SLOPED ENDS

 #14
20240183236
2024-06-06

REDUCED BACKLASH SEALING/ANCHORING ASSEMBLY

 #15
20240175333
2024-05-30

Seal backup and seal system

 #16
20240060386
2024-02-22

Back-up ring system for elastomeric sealing elements

 #17
20230332479
2023-10-19

High performance regular and high expansion elements for oil and gas applications

 #18
20230287757
2023-09-14

Element Backup

 #19
20230265737
2023-08-24

High expansion backup, seal, and system

 #20
20230220744
2023-07-13

Controlled deformation and shape recovery of packing elements

 #21
20230184053
2023-06-15

Downhole tool with backup ring assembly

 #22
20230016540
2023-01-19

METHOD OF MANUFACTURE OF A VARIABLE DENSITY ELEMENT RETAINER

 #23
20220341281
2022-10-27

Expanding and collapsing apparatus with seal pressure equalization

 #24
20220325600
2022-10-13

EXPANDABLE METAL AS BACKUP FOR ELASTOMERIC ELEMENTS

 #25
20220316296
2022-10-06

Backup and packer

 #26
20220316295
2022-10-06

PACKER

 #27
20220316292
2022-10-06

Roll-out apparatus, method, and system

 #28
20220316291
2022-10-06

Roll-out apparatus, method, and system

 #29
20220298884
2022-09-22

Extrusion preventing device for incorporation into a sealing element and a well tool device comprising a sealing element in which such an extrusion preventing device is incorporated

 #30
20220268116
2022-08-25

Expanding and collapsing apparatus and methods of use

 #31
20220259934
2022-08-18

Load anchor with sealing

 #32
20220220821
2022-07-14

Wiper plug

 #33
20220178223
2022-06-09

Radially expandable anti-extrusion backup ring

 #34
20220136362
2022-05-05

Controlled deformation and shape recovery of packing elements

 #35
20220136361
2022-05-05

Controlled deformation and shape recovery of packing elements

 #36
20220127925
2022-04-28

Spiral backup ring containment for packer assemblies

 #37
20220106854
2022-04-07

Retrievable anti-extrusion foldback-ring backup for sealing element

 #38
20220081991
2022-03-17

Segmented backup ring, system and method

 #39
20220034190
2022-02-03

Backup rings for downhole bridge plug sealing element systems

 #40
20210363845
2021-11-25

Systems and methods for bonding a downhole tool to a surface within the borehole

 #41
20210317720
2021-10-14

Plug, retaining member, and method for well completion using plug

 #42
20210310328
2021-10-07

Well packers

 #43
20210293113
2021-09-23

Variable density element retainer for use downhole

 #44
20210246757
2021-08-12

Anti-extrusion assembly and a sealing system comprising same

 #45
20210230965
2021-07-29

High performance regular and high expansion elements for oil and gas applications

 #46
20210180427
2021-06-17

Inflatable packer system for an annular blowout preventer

 #47
20210164317
2021-06-03

Pre-set inhibiting extrusion limiter for retrievable packers

 #48
20210156221
2021-05-27

Zero extrusion gap barrier device used on packing elements

 #49
20210140265
2021-05-13

Retrievable anti-extrusion foldback-ring backup for sealing element

 #50
20210131219
2021-05-06

Seal apparatus and methods of use

 #51
20210108483
2021-04-15

Pre-set inhibiting extrusion limiter for retrievable packers

 #52
20210071494
2021-03-11

Single-set anti-extrusion ring with 3-dimensionally curved mating ring segment faces

 #53
20210032955
2021-02-04

Anti-extrusion slip assemblies for a downhole sealing device

 #54
20210010343
2021-01-14

Slotted Backup Ring Assembly

 #55
20200386070
2020-12-10

Plug, retaining member, and method for well completion using plug

 #56
20200378211
2020-12-03

Resilient matrix suspension for frangible components

 #57
20200370392
2020-11-26

ULTRASHORT PLUG

 #58
20200308920
2020-10-01

Multi-layer backup ring

 #59
20200300057
2020-09-24

Downhole expandable metal tubular

 #60
20200277836
2020-09-03

Buckle prevention ring

 #61
20200256151
2020-08-13

Annular bypass packer

 #62
20200232298
2020-07-23

Multi-layer backup ring

 #63
20200217172
2020-07-09

Downhole bridge plug sealing element systems

 #64
20200190935
2020-06-18

Plug, retaining member, and method for well completion using plug

 #65
20200141529
2020-05-07

Subsea slip-on pipeline repair connector with graphite packing

 #66
20200072017
2020-03-05

Plug for a coiled tubing string

 #67
20200048981
2020-02-13

Frac Plug with Sealing Element Compression Mechanism

 #68
20190368304
2019-12-05

Element backup

 #69
20190360297
2019-11-28

Expandable backup ring

 #70
20190360288
2019-11-28

Expanding and collapsing apparatus and methods of use

 #71
20190352997
2019-11-21

Expanding and collapsing apparatus and methods of use

 #72
20190345791
2019-11-14

Multi-layer packer backup ring with closed extrusion gaps

 #73
20190323316
2019-10-24

Expanding and collapsing apparatus and methods of use

 #74
20190301263
2019-10-03

IMPROVED SEALING APPARATUS

 #75
20190264532
2019-08-29

Swellable packer with reinforcement and anti-extrusion features

 #76
20190264531
2019-08-29

Rubber cylinder having higher hardness in upper end portion, packer, and bridge plug

 #77
20190264530
2019-08-29

Rubber cylinder with rigid seal rings on both ends, packer, and bridge plug

 #78
20190249514
2019-08-15

Downhole tool with fingered member

 #79
20190249512
2019-08-15

Loss circulation drilling packer

 #80
20190249511
2019-08-15

Multi-layer backup ring including interlock members

 #81
20190226298
2019-07-25

Frac Plug Having a Cover

 #82
20190203558
2019-07-04

HIGH EXPANSION METAL BACK-UP RING FOR PACKERS AND BRIDGE PLUGS

 #83
20190162032
2019-05-30

Downhole tool and method of use

 #84
20190128089
2019-05-02

Axially Articulated and Rotationally Locked Backup Ring Assembly for a Sealing Element

 #85
20190120011
2019-04-25

Packer with pivotable anti-extrusion elements

 #86
20190112891
2019-04-18

Anti-extrusion assembly for a downhole tool

 #87
20190100977
2019-04-04

Non-Extruding Single Packer

 #88
20190078413
2019-03-14

Multi-layer packer backup ring with closed extrusion gaps

 #89
20190071949
2019-03-07

COLLAPSIBLE SUPPORT RINGS FOR A DOWNHOLE SYSTEM

 #90
20190071948
2019-03-07

System to control extrusion gaps in an anti-extrusion device

 #91
20190040710
2019-02-07

Seal backup, seal system and wellbore system

 #92
20190032444
2019-01-31

Linear selective profile actuation system

 #93
20180363408
2018-12-20

Swaged in place continuous metal backup ring

 #94
20180347306
2018-12-06

Well packers

 #95
20180340420
2018-11-29

Systems and Methods for an Expandable Packer

 #96
20180328136
2018-11-15

Frac plug with retention mechanisim

 #97
20180328130
2018-11-15

Frac plug with retention mechanism

 #98
20180320473
2018-11-08

Sealing element backup ring with integrated tab to close extrusion path along a mandrel

 #99
20180313184
2018-11-01

Extrusion limiting ring for wellbore isolation devices

 #100
20180298718
2018-10-18

Multi-layer Packer Backup Ring with Closed Extrusion Gaps

 #101
20180298716
2018-10-18

Packer Backup Ring with Closed Extrusion Gaps

 #102
20180274315
2018-09-27

Fingered member for a downhole tool

 #103
20180252074
2018-09-06

Multi-stage well isolation

 #104
20180252068
2018-09-06

Packing element having a bonded petal anti-extrusion device

 #105
20180209241
2018-07-26

Packing element with timed setting sequence

 #106
20180155998
2018-06-07

Downhole tool and method of use

 #107
20180142529
2018-05-24

Packing element back-up system incorporating iris mechanism

 #108
20180106126
2018-04-19

SEAL SLEEVE AND ASSEMBLY INCLUDING SUCH A SEAL SLEEVE

 #109
20180087346
2018-03-29

Downhole packer element with propped element spacer

 #110
20180038192
2018-02-08

Wellbore isolation devices and methods of use

 #111
20180023367
2018-01-25

Wellbore isolation devices and methods of use

 #112
20180023366
2018-01-25

Slotted Backup Ring Assembly

 #113
20180016864
2018-01-18

BOREHOLE PLUG WITH SPIRAL CUT SLIP AND INTEGRATED SEALING ELEMENT

 #114
20180016863
2018-01-18

Angled extrusion limiter

 #115
20180016859
2018-01-18

Wellbore isolation devices and methods of use

 #116
20170362912
2017-12-21

Frac plug with retention mechanism

 #117
20170350211
2017-12-07

Anti-extrusion barrier for packing element

 #118
20170275963
2017-09-28

Downhole tool with anti-extrusion device

 #119
20170211348
2017-07-27

ELASTICALLY DEFORMABLE SUPPORT FOR AN EXPANDABLE SEAL ELEMENT OF A DOWNHOLE TOOL

 #120
20170191343
2017-07-06

Swellable packer with enhanced operating envelope

 #121
20170191340
2017-07-06

Slotted anti-extrusion ring assembly

 #122
20170159401
2017-06-08

EXPANDABLE TUBULAR ELEMENT BEARING ONE OR MORE SWELLING SEALS

 #123
20170122049
2017-05-04

Downhole tool and system, and method of use

 #124
20170114607
2017-04-27

Method and apparatus to utilize a deformable filler ring

 #125
20170107783
2017-04-20

Extended reach anti-extrusion ring assembly with anchoring feature

 #126
20170101846
2017-04-13

Downhole expandable metal tubular

 #127
20170089196
2017-03-30

Systems and methods for formation sampling

 #128
20170051574
2017-02-23

MULTI-STAGE WELL ISOLATION AND FRACTURING

 #129
20170002621
2017-01-05

Buckle prevention ring

 #130
20160298416
2016-10-13

Composite circular connector seal and method of use

 #131
20160208573
2016-07-21

Tubular element with dynamic sealing and method for applying same against the wall of a wellbore

 #132
20160160602
2016-06-09

Annulus sealing arrangement and method of sealing an annulus

 #133
20160145957
2016-05-26

Downhole tool and method of use

 #134
20160123104
2016-05-05

Downhole tool with anti-extrusion device

 #135
20160123100
2016-05-05

Angled segmented backup ring

 #136
20160097253
2016-04-07

Packer or plug element backup ring with folding feature

 #137
20160090813
2016-03-31

Expandable support ring for packing element containment system

 #138
20160084033
2016-03-24

Packer and associated methods, seal ring and fixing ring

 #139
20160061000
2016-03-03

Flow resistant packing element system for composite plug

 #140
20160053570
2016-02-25

Swellable packer with reinforcement and anti-extrusion features

 #141
20160032681
2016-02-04

High pressure seal with composite anti-extrusion mechanism

 #142
20150308218
2015-10-29

EXTRUSION GAP REDUCTION DEVICE AND METHOD FOR REDUCING AN EXTRUSION GAP

 #143
20150308214
2015-10-29

Fold back swell packer

 #144
20150285025
2015-10-08

Multi-stage well isolation

 #145
20150275619
2015-10-01

Continuous expandable backup ring for a seal with retraction capability

 #146
20150275618
2015-10-01

Through tubing bridge plug and installation method for same

 #147
20150260006
2015-09-17

Swellable packer having reinforcement plate

 #148
20150247374
2015-09-03

Plugging device

 #149
20150204159
2015-07-23

Packer with anti-extrusion backup system

 #150
20150167420
2015-06-18

Anti-creep rings and configurations for single packers

 #151
20150129242
2015-05-14

Sealing annular gaps in a well

 #152
20150107859
2015-04-23

Expansion control device for a packer body and also a piping tool, method and use for controlling the expansion of the packer body

 #153
20150060088
2015-03-05

Packer having swellable and compressible elements

 #154
20140319783
2014-10-30

Expandable high pressure and high temperature seal

 #155
20140306406
2014-10-16

Seal sleeve and assembly including such a seal sleeve

 #156
20140290946
2014-10-02

Big gap element sealing system

 #157
20140284046
2014-09-25

Wellbore isolation tool using sealing element having shape memory polymer

 #158
20140262351
2014-09-18

Split foldback rings with anti-hooping band

 #159
20140224476
2014-08-14

Down hole tool having improved segmented back up ring

 #160
20140196889
2014-07-17

Downhole anchoring systems and methods of using same

 #161
20140190684
2014-07-10

Extrusion preventing supporting device

 #162
20140084547
2014-03-27

HIGH PRESSURE SEAL BACK-UP

 #163
20140076539
2014-03-20

Plugging device

 #164
20140000869
2014-01-02

Isolation assembly for inflow control device

 #165
20130341049
2013-12-26

Lock mechanism for downhole tools

 #166
20130333875
2013-12-19

Plugging device

 #167
20130306331
2013-11-21

Packing element backup system

 #168
20130306330
2013-11-21

Slip-deployed anti-extrusion backup ring

 #169
20130277069
2013-10-24

Swellable downhole apparatus and support assembly

 #170
20130269929
2013-10-17

Protected retaining bands

 #171
20130228279
2013-09-05

System and method for enhancing packer operation and longevity

 #172
20130192853
2013-08-01

Wellbore packer back-up ring assembly, packer and method

 #173
20130180705
2013-07-18

Expanding elastomer/plug device for sealing bore hole and pipelines

 #174
20130147120
2013-06-13

Continuous Backup Assembly for High Pressure Seals

 #175
20130146277
2013-06-13

Multi-component Anti-extrusion Barrier for a Compression Set Subterranean Barrier

 #176
20130140023
2013-06-06

Assemblies and methods for minimizing pressure-wave damage

 #177
20130056207
2013-03-07

Downhole sealing system using cement activated material and method of downhole sealing

 #178
20130038021
2013-02-14

Annular seal

 #179
20130008673
2013-01-10

Covered retaining shoe configurations for use in a downhole tool

 #180
20130008671
2013-01-10

WELLBORE PLUG AND METHOD

 #181
20130001881
2013-01-03

Seal assembly and method of forming a seal assembly

 #182
20130000887
2013-01-03

Downhole tool with pumpable section

 #183
20120312526
2012-12-13

Swelling packer

 #184
20120299246
2012-11-29

Borehole seal, backup and method

 #185
20120247775
2012-10-04

Downhole tool with pumpable section

 #186
20120217025
2012-08-30

Metal expandable element back-up ring for high pressure/high temperature packer

 #187
20120205873
2012-08-16

Anchoring seal

 #188
20120205091
2012-08-16

Stage tool

 #189
20120187632
2012-07-26

Packer with non-extrusion ring

 #190
20120186801
2012-07-26

Swellable downhole packer

 #191
20120152568
2012-06-21

Downhole apparatus with a swellable support structure

 #192
20120145412
2012-06-14

Extending lines through, and preventing extrusion of, seal elements of packer assemblies

 #193
20120133098
2012-05-31

Anti-extrusion backup system, packing element system having backup system, and method

 #194
20120103634
2012-05-03

Ring member for a swellable downhole packer

 #195
20120073834
2012-03-29

Friction Bite with Swellable Elastomer Elements

 #196
20120073830
2012-03-29

Universal Backup for Swellable Packers

 #197
20120061105
2012-03-15

Single piece packer extrusion limiter ring

 #198
20120055667
2012-03-08

Wellbore isolation tool using sealing element having shape memory polymer

 #199
20120037355
2012-02-16

Retractable petal collet backup for a subterranean seal

 #200
20120018143
2012-01-26

Swellable packer anchors

 #201
20110284212
2011-11-24

Downhole fluid communication apparatus and method

 #202
20110265986
2011-11-03

Multiple layer extrusion limiter

 #203
20110259610
2011-10-27

High pressure and high temperature ball seat

 #204
20110259578
2011-10-27

SWELLABLE DOWNHOLE PACKER

 #205
20110147012
2011-06-23

Downhole apparatus with a swellable support structure

 #206
20110101628
2011-05-05

Swellable material and method

 #207
20110101615
2011-05-05

Sealing apparatus

 #208
20110101613
2011-05-05

IMPROVED SEAL

 #209
20110088892
2011-04-21

Packer-anchoring device

 #210
20110073329
2011-03-31

Compression assembly and method for actuating downhole packing elements

 #211
20110073310
2011-03-31

Through tubing bridge plug and installation method for same

 #212
20110061857
2011-03-17

Packer with non-extrusion ring

 #213
20110048744
2011-03-03

Expandable gage ring

 #214
20110037229
2011-02-17

Packing element

 #215
20110036561
2011-02-17

Retractable downhole backup assembly for circumferential seal support

 #216
20100326675
2010-12-30

High-pressure/high temperature packer seal

 #217
20100326650
2010-12-30

Drillable bridge plug

 #218
20100320695
2010-12-23

Annular seal

 #219
20100314135
2010-12-16

Subterranean well tool including a locking seal healing system

 #220
20100294516
2010-11-25

Anti-extrusion packer system

 #221
20100294484
2010-11-25

Swelling packer and method of construction

 #222
20100288511
2010-11-18

System and method for enhancing packer operation and longevity

 #223
20100288486
2010-11-18

Swellable downhole packer

 #224
20100276137
2010-11-04

Swellable downhole apparatus and support assembly

 #225
20100243235
2010-09-30

Packer providing multiple seals and having swellable element isolatable from the wellbore

 #226
20100186970
2010-07-29

Support assembly for a deformable sealing element for a downhole tool

 #227
20100186947
2010-07-29

Retractable downhole backup assembly for circumferential seal support

 #228
20100170682
2010-07-08

INFLATABLE PACKER ASSEMBLY

 #229
20100155053
2010-06-24

Downhole fluid communication apparatus and method

 #230
20100139911
2010-06-10

Subterranean well ultra-short slip and packing element system

 #231
20100122821
2010-05-20

Packer system with reduced friction during actuation

 #232
20100101804
2010-04-29

Resettable antiextrusion backup system and method

 #233
20100071908
2010-03-25

Downhole backup system and method

 #234
20100051295
2010-03-04

Swellable packer construction for continuous or segmented tubing

 #235
20100038074
2010-02-18

Anti-extrusion device for swell rubber packer

 #236
20090321065
2009-12-31

Resettable antiextrusion backup system and method

 #237
20090283279
2009-11-19

ZONAL ISOLATION SYSTEM

 #238
20090277648
2009-11-12

Downhole apparatus with a swellable support structure

 #239
20090272546
2009-11-05

Downhole apparatus with a swellable seal

 #240
20090272541
2009-11-05

Downhole apparatus with a swellable connector

 #241
20090272525
2009-11-05

Downhole apparatus with a swellable centraliser

 #242
20090260801
2009-10-22

Ring member for a swellable downhole packer

 #243
20090255690
2009-10-15

Multi-Piece Packing Element Containment System

 #244
20090242189
2009-10-01

SWELL PACKER

 #245
20090230632
2009-09-17

SYSTEM, METHOD AND APPARATUS FOR SEALING MATERIALS HAVING A LOW GLASS TRANSITION TEMPERATURE FOR HIGH PERFORMANCE SEALING APPLICATIONS

 #246
20090229816
2009-09-17

Swell packer and method of manufacturing

 #247
20090179383
2009-07-16

Swellable packer with composite material end rings

 #248
20090159265
2009-06-25

Packer-anchoring device

 #249
20090139707
2009-06-04

Swellable packer with back-up systems

 #250
20090130938
2009-05-21

SWELLABLE MATERIAL AND METHOD

 #251
20090126947
2009-05-21

SWELLABLE MATERIAL AND METHOD

 #252
20090126925
2009-05-21

Helical backup element

 #253
20090065191
2009-03-12

Support assembly for downhole tool, downhole tool and method

 #254
20080236271
2008-10-02

Downhole seal assembly having embedded sensors and method for use of same

 #255
20080223588
2008-09-18

Well tool having enhanced packing element assembly

 #256
20080202771
2008-08-28

Subterranean well tool including a locking seal healing system

 #257
20080196884
2008-08-21

Expandable packer with mounted exterior slips and seal

 #258
20080190600
2008-08-14

Drillable bridge plug

 #259
20080135240
2008-06-12

Inflatable packer assembly

 #260
20080115928
2008-05-22

Packer cup for a packoff nipple

 #261
20080093086
2008-04-24

Swellable packer construction for continuous or segmented tubing

 #262
20080060821
2008-03-13

Packer element retaining system

 #263
20070290454
2007-12-20

Encapsulated back-up system for use with seal system

 #264
20070261863
2007-11-15

Sealing system

 #265
20070227746
2007-10-04

Packer cup systems for use inside a wellbore

 #266
20070163777
2007-07-19

Self energized packer

 #267
20070151727
2007-07-05

Downhole Fluid Communication Apparatus and Method

 #268
20070144734
2007-06-28

Inflatable packers

 #269
20070131413
2007-06-14

Mandrel for introduction into a fluid circulation duct, and related production well

 #270
20070125532
2007-06-07

Self energized backup system for packer sealing elements

 #271
20070056725
2007-03-15

Seal assembly

 #272
20070044977
2007-03-01

Packer

 #273
20060290066
2006-12-28

Reinforcement ring

 #274
20060289173
2006-12-28

Packer

 #275
20060232019
2006-10-19

Encapsulated back-up system for use with seal system

 #276
20060219415
2006-10-05

Packer cups for use inside a wellbore

 #277
20060219400
2006-10-05

Inflatable packers

 #278
20060186601
2006-08-24

Fluid seals

 #279
20060102339
2006-05-18

Packoff nipple

 #280
20060090905
2006-05-04

Inflatable packer assembly

 #281
20050268709
2005-12-08

Methods for using a formation tester

 #282
20050230100
2005-10-20

Packer with metal sealing element

 #283
20050217869
2005-10-06

High pressure expandable packer

 #284
20050189121
2005-09-01

Expandable packer with mounted exterior slips and seal

 #285
20050189120
2005-09-01

Slotted slip element for expandable packer

 #286
20050161229
2005-07-28

Expandable packer with anchoring feature

 #287
20050161218
2005-07-28

Probe isolation seal pad

 #288
20050098313
2005-05-12

Pressure control tool for modluating pressure in a portion of a wellbore

 #289
20050062235
2005-03-24

Annular seal

 #290
20050034876
2005-02-17

Expandable packer with anchoring feature

 #291
20050028990
2005-02-10

Packing tool and method

 #292
20050028989
2005-02-10

Expandable packer with anchoring feature

 #293
19315341
2026-06-02

Anti-extrusion element with overlapping segments

 #294
19005428
2026-03-10

Garter spring assembly for sealing devices in well systems

 #295
18542149
2025-07-15

Resettable element back-up system

 #296
17576682
2023-03-28

Downhole tool with backup ring assembly

 #297
17534141
2023-12-26

Resettable element back-up system

 #298
16848611
2021-07-27

Frac plug high expansion element retainer

 #299
16428496
2020-10-20

Plug apparatus and methods for oil and gas wellbores

 #300
14946637
2017-04-04

Isolation liner incorporating a drill pipe with swell packers