Patents-Review.com
ClassID:

135722 ⎘

E21B49/001 - CPC Classification

Classification description:

Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells specially adapted for underwater installations

Recent Application in this class:
#1
20260002442
2026-01-01

DEVICE FOR CHARACTERIZING AND TESTING ON-SITE BASIC PARAMETER OF NATURAL GAS HYDRATE

 #2
20250028065
2025-01-23

Methods for creating a critical crust reservoir model

 #3
20240111072
2024-04-04

Method and Apparatus for Petrophysical Classification, Characterization, and Uncertainty Estimation

 #4
20230212943
2023-07-06

Restoring core samples

 #5
20230151731
2023-05-18

Application method of device for accurately evaluating vertical content distribution of undersea hydrate reservoir

 #6
20220299667
2022-09-22

Methods for creating a critical crust reservoir model

 #7
20220235653
2022-07-28

Fluid sampling and measuring assembly and method

 #8
20220228481
2022-07-21

METHOD FOR DETERMINING PRESENCE OF RESERVOIRED HYDROCARBONS

 #9
20220018242
2022-01-20

Marine to borehole electromagnetic survey

 #10
20220003105
2022-01-06

WELL MONITORING SYSTEM FOR MONITORING AN SUBSEA, SUB-SURFACE WELL

 #11
20200355590
2020-11-12

System for measuring mechanical properties of sea floor sediments at full ocean depths

 #12
20200355038
2020-11-12

Method and apparatus for oil and gas operations

 #13
20200318959
2020-10-08

Real-time monitoring apparatus for seafloor deformation during hydrate exploitation

 #14
20200056477
2020-02-20

Experimental device for simulating invasion of shallow fluid into wellbore

 #15
20190271678
2019-09-05

Subsea gas quality analysis

 #16
20190257643
2019-08-22

Laser measuring system for tubulars

 #17
20190218881
2019-07-18

Method and apparatus for oil and gas operations

 #18
20180340416
2018-11-29

Methods of optimal selection and sizing of electric submersible pumps

 #19
20170038287
2017-02-09

Downhole viscosity sensor with smart fluid

 #20
20170016279
2017-01-19

Downhole stinger geotechnical sampling and in situ testing tool

 #21
20170002651
2017-01-05

ROV mountable subsea pump flushing and sampling system

 #22
20160369625
2016-12-22

Crustal and disturbance field survey correction

 #23
20160305205
2016-10-20

Natural gas hydrate formation drilling simulation device

 #24
20160123140
2016-05-05

Oilfield operation using a drill string

 #25
20160003038
2016-01-07

Determining Gas Content of a Core Sample

 #26
20150292291
2015-10-15

Method and apparatus for oil and gas operations

 #27
20150233805
2015-08-20

Bending testing

 #28
20150204167
2015-07-23

METHOD AND DEVICE FOR INTERFACING WITH SUBSEA PRODUCTION EQUIPMENT

 #29
20150160051
2015-06-11

SIIS level 2 sensor offset distance extender

 #30
20150033842
2015-02-05

In-situ scour testing device

 #31
20140060848
2014-03-06

Plug and pressure testing method and apparatus

 #32
20130213149
2013-08-22

Isothermal subsea sampling system and method

 #33
20130175041
2013-07-11

Pressure tolerant battery

 #34
20120305315
2012-12-06

Oilfield operation using a drill string

 #35
20120267115
2012-10-25

SUBSEA SAMPLING SYSTEM AND METHOD

 #36
20100198547
2010-08-05

Differential pressure systems and methods for measuring hydraulic parameters across surface water-aquifer interfaces

 #37
20080115971
2008-05-22

Remote gas monitoring apparatus for seabed drilling

 #38
20070125158
2007-06-07

Ball penetrometer for soft soils testing