ClassID:

135498

E21B33/1272 - CPC Classification

Classification description:

Sealing or packing boreholes or wells in the borehole; Packers; Plugs with inflatable sleeve inflated by down-hole pumping means operated by a pipe string

Recent Application in this class:
#1
20260063013
2026-03-05

SEAL ENERGIZING SYSTEMS TO MAINTAIN SEAL ENERGIZATION IN A DOWNHOLE WELL AND METHODS TO MAINTAIN SEAL ENERGIZATION IN A DOWNHOLE WELL

#2
20240125210
2024-04-18

ANNULAR BARRIER WITH VALVE UNIT

#3
20220333456
2022-10-20

Annular barrier and downhole system

#4
20220259940
2022-08-18

Annular barrier and downhole system

#5
20220009835
2022-01-13

Work method to design extended life slurries

#6
20190383114
2019-12-19

ANNULAR BARRIER

#7
20190264537
2019-08-29

Expansion assembly

#8
20190226337
2019-07-25

Enhanced Downhole Packer

#9
20190195042
2019-06-27

Sealing an undesirable formation zone in the wall of a wellbore

#10
20190195041
2019-06-27

Sealing an undesirable formation zone in the wall of a wellbore

#11
20190169954
2019-06-06

Light and buoyant retrievable assembly—wellbore tool and method

#12
20190017347
2019-01-17

Packer assembly including a support ring

#13
20180347309
2018-12-06

Sealing an undesirable formation zone in the wall of a wellbore

#14
20180334903
2018-11-22

One run reservoir evaluation and stimulation while drilling

#15
20180148992
2018-05-31

Annular barrier with expansion verification

#16
20180128077
2018-05-10

Downhole formation testing tools including improved flow routing device

#17
20180080303
2018-03-22

Packer

#18
20180010416
2018-01-11

Coiled tubing spiral venturi tool

#19
20170284168
2017-10-05

Telemetrically operable packers

#20
20170275962
2017-09-28

Telemetrically operable packers

#21
20150267501
2015-09-24

Method and apparatus for sealing an undesirable formation zone in the wall of a wellbore

#22
20140360734
2014-12-11

Packer setting mechanism

#23
20140224511
2014-08-14

Pump Drain Arrangements For Packer Systems And Methods For Sampling Underground Formations Using Same

#24
20090283279
2009-11-19

ZONAL ISOLATION SYSTEM

#25
20060260820
2006-11-23

Zonal isolation tools and methods of use