ClassID:

135735

E21B49/084 - 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; Obtaining fluid samples or testing fluids, in boreholes or wells with means for conveying samples through pipe to surface

Recent Application in this class:
#1
20250347223
2025-11-13

SAMPLING THROUGH PERFORATION GUNS WITH FLUSHING

#2
20250334013
2025-10-30

RIG-UP FOR PRESSURE CONTROL

#3
20250188835
2025-06-12

DETERMINING HYDROCARBON RESOURCE CHARACTERISTICS VIA MUD LOGGING

#4
20250067719
2025-02-27

Gas Chromatography for Liquid Phase Light Hydrocarbon Detection

#5
20240141782
2024-05-02

Methods and systems of a combo tool for sampling while logging (SWL)

#6
20240003192
2024-01-04

Continuous Sampling Drill Bit

#7
20230296018
2023-09-21

CONTINUOUS CHARACTERIZATION AND COMMUNICATION OF CHEMICAL TRACER

#8
20230054107
2023-02-23

Shale Shaker System Having Sensors, and Method of Use

#9
20230003122
2023-01-05

Crude oil parameter detection device

#10
20220412331
2022-12-29

Multi-pump integrated mixed fluid delivery device

#11
20220290501
2022-09-15

Continuous sampling drill bit

#12
20220120163
2022-04-21

Controlling corrosion within wellbores

#13
20220098970
2022-03-31

System for optimization of hydrocarbon production

#14
20210355824
2021-11-18

Method of assessing an oil recovery process

#15
20210324736
2021-10-21

METHOD OF PERFORMING FORMATION TESTING OPERATIONS

#16
20210207475
2021-07-08

METHOD FOR PACKAGING COMPONENTS, ASSEMBLIES AND MODULES IN DOWNHOLE TOOLS

#17
20210071523
2021-03-11

Suspended fluid sampling and monitoring

#18
20210062650
2021-03-04

Determining hydrocarbon resource characteristics via mud logging

#19
20210054695
2021-02-25

Continuous sampling drill bit

#20
20210040803
2021-02-11

Automated drilling-fluid additive system and method

#21
20200400018
2020-12-24

DEVICE FOR EXTRACTING GAS FROM A DRILLING FLUID FOR A SYSTEM FOR CONDUCTING SUBTERRANEAN DRILLING OPERATIONS

#22
20200284145
2020-09-10

Shale shaker system having sensors, and method of use

#23
20200256342
2020-08-13

GROUNDWATER SAMPLING PUMP

#24
20200256188
2020-08-13

Bias correction for a gas extractor and fluid sampling system

#25
20200217197
2020-07-09

Flow testing wellbores while drilling

#26
20190186227
2019-06-20

OILFIELD APPARATUS AND METHODS OF USE

#27
20190145199
2019-05-16

Hydraulic filtration and pressure testing device

#28
20190106987
2019-04-11

Methods and systems for reservoir characterization and optimization of downhole fluid sampling

#29
20190079002
2019-03-14

Hydraulic filtration and pressure testing device

#30
20180371903
2018-12-27

Downhole characterization of formation pressure

#31
20180371902
2018-12-27

Downhole characterization of formation pressure

#32
20180363460
2018-12-20

Apparatus and method for testing an oil and/or gas well with a multiple-stage completion

#33
20180259671
2018-09-13

Determining permeablility based on collar responses

#34
20180163536
2018-06-14

Suspended fluid sampling and monitoring

#35
20180088096
2018-03-29

Method for automatically generating a fluid property log derived from drilling fluid gas data

#36
20170321549
2017-11-09

Method and systems for integrating downhole fluid data with surface mud-gas data

#37
20170314389
2017-11-02

METHOD FOR PACKAGING COMPONENTS, ASSEMBLIES AND MODULES IN DOWNHOLE TOOLS

#38
20170241263
2017-08-24

Water sampling assembly and method for groundwater production wells and boreholes

#39
20170191919
2017-07-06

Real-time optical flow imaging to determine particle size distribution

#40
20170167255
2017-06-15

Formation fluid sampling methods and systems

#41
20170016320
2017-01-19

Method and apparatus for speciating hydrocarbons

#42
20170012582
2017-01-12

Apparatus and method for compensating a load-pulled oscillator

#43
20160348482
2016-12-01

Shallow ground water characterization system using flexible borehole liners

#44
20160298632
2016-10-13

Groundwater Sampling Pump

#45
20160265353
2016-09-15

Well fluid sampling confirmation and analysis

#46
20160245081
2016-08-25

Drilling fluid monitor and method

#47
20160194955
2016-07-07

Receiving and measuring expelled gas from a core sample

#48
20150260038
2015-09-17

Well completion sliding sleeve valve based sampling system and method

#49
20150159483
2015-06-11

Apparatus and method for obtaining formation fluid samples utilizing a flow control device in a sample tank

#50
20150112599
2015-04-23

Determining the quality of data gathered in a wellbore in a subterranean formation

#51
20150090447
2015-04-02

Sample tank with integrated fluid separation

#52
20150075805
2015-03-19

Oilfield apparatus and methods of use

#53
20150015884
2015-01-15

Methods for assaying polymers using an integrated computational element

#54
20150007647
2015-01-08

Acoustic determination of the position of a piston within a sample bottle

#55
20140377871
2014-12-25

Method and system for wireless in-situ sampling of a reservoir fluid

#56
20140373618
2014-12-25

Pressure measurement cell for use in an infusion or injection system

#57
20140345860
2014-11-27

DOWNHOLE SAMPLE MODULE WITH AN ACCESSIBLE CAPTURED VOLUME ADJACENT A SAMPLE BOTTLE

#58
20140332281
2014-11-13

Fluid sampling tool with deployable fluid cartidges

#59
20140305628
2014-10-16

Device useful as a borehole fluid sampler

#60
20140290941
2014-10-02

Sample capture prioritization

#61
20140271271
2014-09-18

Submersible pump

#62
20140144224
2014-05-29

Monitoring system for borehole operations

#63
20140110108
2014-04-24

Fluid sample capture tool

#64
20140096957
2014-04-10

Fluid control in reservoir fluid sampling tools

#65
20140008061
2014-01-09

Packer assembly with sealing bodies

#66
20130341016
2013-12-26

System and method for sampling assembly with outer layer of rings

#67
20130270006
2013-10-17

Drilling rig with continuous gas analysis

#68
20130133885
2013-05-30

Formation fluid sampling

#69
20130068468
2013-03-21

GROUNDWATER SAMPLING DEVICE

#70
20130025943
2013-01-31

APPARATUS AND METHOD FOR RETRIEVAL OF DOWNHOLE SAMPLE

#71
20120018152
2012-01-26

Fluid control in reservior fluid sampling tools

#72
20110313670
2011-12-22

METHOD AND APPARATUS FOR SPECIATING HYDROCARBONS

#73
20110308391
2011-12-22

Method and apparatus for liberating gases from drilling fluid

#74
20110253373
2011-10-20

TRANSPORT AND ANALYSIS DEVICE FOR USE IN A BOREHOLE

#75
20110132601
2011-06-09

Multi-zone formation evaluation systems and methods

#76
20100132941
2010-06-03

Apparatus and method for manipulating fluid during drilling or pumping operations

#77
20100126713
2010-05-27

Fluid collecting apparatus

#78
20100095758
2010-04-22

Apparatus and methods for collecting a downhole sample

#79
20090308604
2009-12-17

Single packer system for collecting fluid in a wellbore

#80
20090193884
2009-08-06

Mobile vacuum sampling system

#81
20090175737
2009-07-09

GROUNDWATER SAMPLING DEVICE

#82
20080314595
2008-12-25

Well jet device and the operating method thereof

#83
20080142214
2008-06-19

Pore fluid sampling system with diffusion barrier and method of use thereof

#84
20080135239
2008-06-12

Methods and systems for sampling heavy oil reservoirs

#85
20080115934
2008-05-22

Multi-zone formation evaluation systems and methods

#86
20080087413
2008-04-17

Groundwater sampling device

#87
20070289372
2007-12-20

Flow through in situ reactors with suction lysimeter sampling capability and methods of using

#88
20070260439
2007-11-08

Flexible borehole liner with diffusion barrier and method of use thereof

#89
20070175663
2007-08-02

Measuring device and drilling device for deep drillings

#90
20070017674
2007-01-25

Method and apparatus for gas displacement well systems

#91
20060180302
2006-08-17

Groundwater sampling device

#92
20050183861
2005-08-25

Liquid sampler

#93
20050081654
2005-04-21

Lysimeter apparatus

#94
20050051329
2005-03-10

Method and apparatus for gas displacement well systems

#95
16544333
2020-04-21

Continuous sampling drill bit

#96
13789401
2015-11-10

Fluid sampling system