Patents-Review.com
ClassID:

135512 ⎘

E21B33/136 - CPC Classification

Classification description:

Sealing or packing boreholes or wells in the borehole; Methods or devices for cementing, for plugging holes, crevices, or the like Baskets, e.g. of umbrella type

Recent Application in this class:
#1
20250223878
2025-07-10

METHOD AND APPARATUS FOR DELIVERING AND SETTING A EUTECTIC ALLOY PLUG TO CURE LOSS-OF-CIRCULATION IN DRILLING APPLICATIONS

 #2
20240384622
2024-11-21

Unidirectional cementing baskets for cement top jobs

 #3
20230175348
2023-06-08

Cement top job with non-retrievable tubing

 #4
20220018211
2022-01-20

Heat sources and alloys for use in down-hole applications

 #5
20210115755
2021-04-22

Tubular wire mesh for loss circulation and wellbore stability

 #6
20210054716
2021-02-25

Plugging formation fractures

 #7
20200217171
2020-07-09

Through tubing bridge plug having high expansion elastomer design

 #8
20190128094
2019-05-02

Fluid placement tool

 #9
20190128091
2019-05-02

Apparatus for use in well abandonment

 #10
20190055806
2019-02-21

Heat sources and alloys for use in down-hole applications

 #11
20180363412
2018-12-20

Apparatus, method and system for plugging a well bore

 #12
20180328703
2018-11-15

Blast Plug

 #13
20180030809
2018-02-01

Expandable device for forming a cement plug

 #14
20160145962
2016-05-26

Apparatus for use in well abandonment

 #15
20150368542
2015-12-24

System and method of using heat sources and alloys in down-hole applications

 #16
20150345248
2015-12-03

Apparatus for use in well abandonment

 #17
20150330174
2015-11-19

Flow restrictor

 #18
20150275618
2015-10-01

Through tubing bridge plug and installation method for same

 #19
20140096949
2014-04-10

DRILL HOLE PLUG SYSTEM

 #20
20130140025
2013-06-06

Equipment for remote launching of cementing plugs

 #21
20130074969
2013-03-28

Device for sealing the end face of a tube from which fluid flows

 #22
20120160524
2012-06-28

COMPLETION ASSEMBLY AND A METHOD FOR STIMULATING, SEGMENTING AND CONTROLLING ERD WELLS

 #23
20110284213
2011-11-24

Device used in the form of a packer or a temporary plug

 #24
20110146986
2011-06-23

Equipment for remote launching of cementing plugs

 #25
20110073329
2011-03-31

Compression assembly and method for actuating downhole packing elements

 #26
20110073310
2011-03-31

Through tubing bridge plug and installation method for same

 #27
20100252230
2010-10-07

Sealing device

 #28
20100084135
2010-04-08

Method for stage-cementing an oil well

 #29
20090044958
2009-02-19

Sealing device

 #30
20060180320
2006-08-17

System and method to seal by bringing the wall of a wellbore into sealing contact with a tubing

 #31
20060124304
2006-06-15

Method of creating a zonal isolation in an underground wellbore

 #32
20050217849
2005-10-06

System and method to seal by bringing the wall of a wellbore into sealing contact with a tubing

 #33
18408861
2025-07-08

Method and apparatus for delivering and setting a eutectic alloy plug to cure loss-of-circulation in drilling applications