ClassID:

135737

E21B49/086 - 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 Withdrawing samples at the surface

Recent Application in this class:
#1
20260036048
2026-02-05

DYNAMICALLY ENGINEERED SAMPLING KITS FOR LIQUID SAMPLES

#2
20250347223
2025-11-13

SAMPLING THROUGH PERFORATION GUNS WITH FLUSHING

#3
20250334562
2025-10-30

CALCULATION OF EXTRACTION EFFICIENCY COEFFICIENTS FOR MUD-GAS ANALYSIS

#4
20250327402
2025-10-23

NATURAL METAL ENRICHMENT USING PRODUCED HYDROCARBON FIELD WATERS

#5
20250251087
2025-08-07

METHOD FOR MANAGING A GAS COMING FROM A DRILLING WELL

#6
20250244154
2025-07-31

LIQUID RATE TEST FROM SAMPLING COLLECTION POINTS

#7
20250215793
2025-07-03

DOWNHOLE FLUID SAMPLING SYSTEM WITH HYDRAULIC ACTUATION

#8
20250207497
2025-06-26

DOWNHOLE LITHIUM DETECTION BY ACCUMULATION

#9
20250188835
2025-06-12

DETERMINING HYDROCARBON RESOURCE CHARACTERISTICS VIA MUD LOGGING

#10
20250116647
2025-04-10

METHODS OF ASSESSING A CAPROCK IN A GEOLOGIC SEQUENCE FOR CAPROCK DEFECTS

#11
20250084760
2025-03-13

INTEGRATED ENVIRONMENTAL MONITORING SYSTEM FOR OIL AND NATURAL GAS WELLS

#12
20250067716
2025-02-27

PREDICTED BIAS CORRECTION FOR DRILLING FLUIDS

#13
20250052151
2025-02-13

ANISOTROPY MEASUREMENTS BY FORMATION TESTER TRACER MEASUREMENTS

#14
20250012187
2025-01-09

ZERO-FLARING WELL TESTING SYSTEMS AND METHODS

#15
20240426213
2024-12-26

TRACER AUTOSAMPLING METHOD

#16
20240410873
2024-12-12

WELL EVALUATION USING WATER CHEMISTRY ANALYSIS

#17
20240159726
2024-05-16

ISOTOPIC MONITORING OF RESERVOIR WATER

#18
20240069003
2024-02-29

DIAGNOSTIC SYSTEM DIRECTLY CONNECTED TO A SUBTERRANEAN FORMATION FOR CARBON DIOIXDE MONITORING

#19
20240044248
2024-02-08

DRILLING FLUID CONTAMINATION DETERMINATION FOR DOWNHOLE FLUID SAMPLING TOOL

#20
20240003207
2024-01-04

Inlet tube, rock drilling rig and method of sampling

#21
20230332500
2023-10-19

Plug assembly system for monitoring condition of fluid within wellhead

#22
20230221459
2023-07-13

Predicting contamination and clean fluid properties from downhole and wellsite gas chromatograms

#23
20230054107
2023-02-23

Shale Shaker System Having Sensors, and Method of Use

#24
20220412213
2022-12-29

Modified gathering manifold, a production system, and a method of use

#25
20220412210
2022-12-29

MONITORING WELLBORE FLUIDS USING METAL IONS FROM TRACERS

#26
20220389813
2022-12-08

Downhole sample extractors and downhole sample extraction systems

#27
20220298918
2022-09-22

Plug assembly for positioning within a passageway of a wellhead component

#28
20220235656
2022-07-28

Utilizing cobots for lab procedures for the purpose of testing and gathering data

#29
20220178253
2022-06-09

NMR sensor for monitoring multi-phase fluid settling

#30
20220155275
2022-05-19

Method and system for measuring composition and property of formation fluid

#31
20220065106
2022-03-03

Plasma optimization with formational and fluid information

#32
20220065044
2022-03-03

Plasma chemistry derived relation between arc and spark for pulse power drilling

#33
20220034862
2022-02-03

Method for differentiating between natural formation hydrocarbon and cracked hydrocarbon using mud gas measurements

#34
20220026314
2022-01-27

Sample pressure reducing system

#35
20220010677
2022-01-13

Well test module

#36
20210404334
2021-12-30

Dynamic formulation of water-based drilling fluids

#37
20210404333
2021-12-30

Microbiome Based Systems, Apparatus and Methods for the Exploration and Production of Hydrocarbons

#38
20210396135
2021-12-23

Microbiome Based Systems, Apparatus and Methods for the Exploration and Production of Hydrocarbons

#39
20210332700
2021-10-28

Downhole sample extractors and downhole sample extraction systems

#40
20210293142
2021-09-23

Contamination estimation of formation samples

#41
20210181108
2021-06-17

METHOD OF MONITORING A FLUID AND USE OF A TRACER FOR MONITORING A FLUID

#42
20210108513
2021-04-15

Sampling chamber with hydrogen sulfide-reactive scavenger

#43
20210088497
2021-03-25

System and method for graphene-structure detection downhole

#44
20210079790
2021-03-18

Method for exploitation and/or monitoring of an aquifer comprising at least one dissolved gas

#45
20210062650
2021-03-04

Determining hydrocarbon resource characteristics via mud logging

#46
20210047924
2021-02-18

Drilling fluid contamination determination for downhole fluid sampling tool

#47
20210025840
2021-01-28

Determining borehole mud composition

#48
20210010370
2021-01-14

Microbiome based systems, apparatus and methods for the exploration and production of hydrocarbons

#49
20210010366
2021-01-14

Method and apparatus for detection of pitting corrosion under iron sulfide deposition

#50
20200408092
2020-12-31

Measuring an adsorbing chemical in downhole fluids

#51
20200386735
2020-12-10

Water retort

#52
20200308962
2020-10-01

Modular well testing systems and methods

#53
20200284145
2020-09-10

Shale shaker system having sensors, and method of use

#54
20200215460
2020-07-09

Sample degasser dilution control system

#55
20200191760
2020-06-18

OPERATIONAL FLUIDS GAS ANALYSIS

#56
20200003053
2020-01-02

Sample phase quality control

#57
20190390548
2019-12-26

Sampling chamber with hydrogen sulfide-reactive scavenger

#58
20190383141
2019-12-19

Frequency sensors for use in subterranean formation operations

#59
20190330957
2019-10-31

Well system with attached sealant line

#60
20190324011
2019-10-24

Method for processing a fluid

#61
20190310237
2019-10-10

Using resistivity measurements to monitor the reaction kinetics between acids and carbonate rocks

#62
20190277826
2019-09-12

Gas logging system

#63
20190277137
2019-09-12

Plug assembly for a mineral extraction system

#64
20190227048
2019-07-25

Application of electrochemical impedance spectroscopy in drilling fluid composition measurements

#65
20190186227
2019-06-20

OILFIELD APPARATUS AND METHODS OF USE

#66
20190178079
2019-06-13

Inflow testing systems and methods for oil and/or gas wells

#67
20190145256
2019-05-16

Method of detecting methane in the bore of a blowout preventer stack

#68
20190145255
2019-05-16

Low volume in-line filtration methods for analyzing hydrocarbon-containing fluid to evaluate asphaltene content and behavior during production operations

#69
20190136690
2019-05-09

Measuring and adsorbing chemical in downhole fluids

#70
20190083928
2019-03-21

Moisture separation systems for downhole drilling systems

#71
20190072475
2019-03-07

Method for determining an extraction efficiency of at least one volatile species contained in a drilling mud

#72
20190049425
2019-02-14

Oil well gauging system and method of using the same

#73
20190040967
2019-02-07

Liquid capture valve

#74
20180372702
2018-12-27

Thermal surface casing vent-steam condensing gas and fluid flow rate-collection manifold

#75
20180361273
2018-12-20

Sample degasser dilution control system

#76
20180333658
2018-11-22

Mud pump and vacuum gas extraction system

#77
20180328173
2018-11-15

Drilling rig gas trap testing

#78
20180328172
2018-11-15

Frequency sensors for use in subterranean formation operations

#79
20180306765
2018-10-25

Oilfield monitoring of subterranean polymer solution

#80
20180298709
2018-10-18

Methods and apparatus for collecting and preserving core samples from a reservoir

#81
20180275114
2018-09-27

DETECTING TRACER BREAKTHROUGH FROM MULTIPLE WELLS COMMINGLED AT A GAS OIL SEPARATION PLANT

#82
20180245466
2018-08-30

Extraction cleaner and gas system check

#83
20180245465
2018-08-30

CONTAMINATION ESTIMATION OF FORMATION SAMPLES

#84
20180171786
2018-06-21

Device comprising multiple detectors for detecting a flow of gas extracted from a drilling fluid

#85
20180119544
2018-05-03

Systems and methods for monitoring and managing wellhead emissions

#86
20180112527
2018-04-26

Apparatus, systems and methods for oil and gas operations

#87
20180080319
2018-03-22

METHOD FOR EXPLOITATION AND/OR MONITORING OF AN AQUIFER COMPRISING AT LEAST ONE DISSOLVED GAS

#88
20180080318
2018-03-22

Methods, apparatus, and systems for injecting and detecting compositions in drilling fluid systems

#89
20180058163
2018-03-01

Methods and apparatus for collecting and preserving core samples from a reservoir

#90
20180051558
2018-02-22

Method for constructing a continuous PVT phase envelope log

#91
20180045008
2018-02-15

Methods and apparatus for collecting and preserving core samples from a reservoir

#92
20180023356
2018-01-25

Gas tray extraction processes

#93
20170370213
2017-12-28

Microbiome based systems, apparatus and methods for the exploration and production of hydrocarbons

#94
20170328202
2017-11-16

Downhole characterization of fluid compressibility

#95
20170321549
2017-11-09

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

#96
20170321548
2017-11-09

Method and systems for analysis of hydraulically-fractured reservoirs

#97
20170321547
2017-11-09

Method and system for establishing well performance during plug mill-out or cleanout/workover operations

#98
20170260856
2017-09-14

DEVICE FOR SAMPLING A PRESSURISED FLUID, EQUIPPED WITH MEANS FOR INCREASING THE VOLUME OF THE SAMPLING CHAMBER

#99
20170259192
2017-09-14

Mud pump and vacuum gas extraction system

#100
20170175478
2017-06-22

OILFIELD APPARATUS AND METHODS OF USE

#101
20170167257
2017-06-15

Methods for determining gas extraction efficiency from a drilling fluid

#102
20170153211
2017-06-01

Mudlogging injection system

#103
20170138190
2017-05-18

Method for evaluating the effectiveness of matrix acidizing in a subterranean formation

#104
20170138189
2017-05-18

System for measuring multi-phase fluid flow characteristics

#105
20170138136
2017-05-18

Apparatus and methods for determining in real-time efficiency extracting gas from drilling fluid at surface

#106
20170122101
2017-05-04

Multigas multisensor redundant Mudlogging system

#107
20170089158
2017-03-30

Methods and apparatus for collecting and preserving core samples from a reservoir

#108
20170030157
2017-02-02

Multifunction wellbore tubular penetration tool

#109
20160369628
2016-12-22

Formation fluid sample container apparatus

#110
20160369158
2016-12-22

NANOFLUIDS FOR OIL RECOVERY FROM TIGHT LIGHT OIL RESERVOIRS AND METHODS OF THEIR USE

#111
20160356142
2016-12-08

Automatic dosing of surfactant for recovered hydrocarbon enhancement

#112
20160354738
2016-12-08

Coated mixing device for hydrocarbon fluid storage containers to combat mixing abrasion

#113
20160319663
2016-11-03

Selection of optimal hydrate inhibitor surfactants for use in oil and gas operations

#114
20160312597
2016-10-27

System and a method for control of oil and gas flow in conduits

#115
20160299118
2016-10-13

METHOD FOR ANALYSIS OF TRACE LEVELS OF CHEMICAL ADDITIVES IN OIL RECOVERY PRODUCTION FLUIDS

#116
20160290132
2016-10-06

Microbiome based systems, apparatus and methods for the exploration and production of hydrocarbons

#117
20160283651
2016-09-29

Microbiome based systems, apparatus and methods for the exploration and production of hydrocarbons

#118
20160281500
2016-09-29

Automated fluid fraction sampling system

#119
20160273355
2016-09-22

Surface fluid extraction and separator system

#120
20160273353
2016-09-22

DETERMINING FORMATION GAS COMPOSITION DURING WELL DRILLING

#121
20160245081
2016-08-25

Drilling fluid monitor and method

#122
20160237998
2016-08-18

Collecting and removing condensate from a gas extraction system

#123
20160215618
2016-07-28

Oil Well Production Analyzing System

#124
20160215617
2016-07-28

Sampling chamber with hydrogen sulfide-reactive scavenger

#125
20160201458
2016-07-14

Platform device for sampling and chemical reaction spectrophotometry of drilling fluid

#126
20160201454
2016-07-14

Petroleum well tracer release flow shunt chamber

#127
20160160641
2016-06-09

On-site mass spectrometry for liquid and extracted gas analysis of drilling fluids

#128
20160131795
2016-05-12

Mudlogging device with dual interferometers

#129
20160091389
2016-03-31

Systems and methods for sample characterization

#130
20160069183
2016-03-10

Composite sampler and nitrogen bottle

#131
20160010453
2016-01-14

Device for automatically calibrating an analyzer used for mud gas or fluid logging, associated analysis system and drilling rig

#132
20150377021
2015-12-31

Reservoir effluent auto sampler and detection system for tracers

#133
20150354341
2015-12-10

System and Method to Convert Surface Pressure to Bottom Hole Pressure Using an Integrated Computation Element

#134
20150284811
2015-10-08

Microbiome based systems, apparatus and methods for the exploration and production of hydrocarbons

#135
20150260035
2015-09-17

Drilling fluid analysis using time-of-flight mass spectrometry

#136
20150218901
2015-08-06

Device for collection of particulate material in a conduit

#137
20150198039
2015-07-16

Oil well production analyzing system

#138
20150184511
2015-07-02

Well testing and production apparatus and method

#139
20150159484
2015-06-11

Downhole fluid analysis methods for determining viscosity

#140
20150075805
2015-03-19

Oilfield apparatus and methods of use

#141
20150075802
2015-03-19

Method and Device for Subsea Sampling

#142
20140338900
2014-11-20

Measuring an adsorbing chemical in downhole fluids

#143
20140110108
2014-04-24

Fluid sample capture tool

#144
20140041446
2014-02-13

Apparatus and system for passively sampling production fluid from a well

#145
20130276553
2013-10-24

Apparatus, system and method for reducing dead volume in a sample container

#146
20130213711
2013-08-22

Apparatus and method for protecting devices downhole

#147
20130126183
2013-05-23

Product sampling system within subsea tree

#148
20130025854
2013-01-31

Method and system for sampling multi-phase fluid at a production wellsite

#149
20120325025
2012-12-27

Gas trap

#150
20120316788
2012-12-13

Formation testing planning and monitoring

#151
20120158337
2012-06-21

Method and Integrated System for Improving Data and Service Quality with Respect to Measurement and Analysis of Reservoir Fluid Samples

#152
20120097385
2012-04-26

Formation fluid sample container apparatus

#153
20120031204
2012-02-09

Device and method of taking fluid samples offshore

#154
20100059221
2010-03-11

SUBSEA FLUID SAMPLING AND ANALYSIS

#155
20100044037
2010-02-25

Method and apparatus for obtaining fluid samples

#156
20070205021
2007-09-06

Method and apparatus for downhole sampling

#157
20070158062
2007-07-12

Zone isolation assembly for isolating and testing fluid samples from a subsurface well

#158
18455702
2025-05-20

Well system with attached sealant line

#159
18397878
2025-03-25

Automated sample cleaning

#160
17521014
2022-05-03

Portable, high temperature, heavy oil well test unit with automatic multi sampling system

#161
17408904
2023-09-26

Well system with attached sealant line

#162
15871844
2020-09-08

Systems and methods for collecting cutting samples during oil and gas drilling operations

#163
15450979
2018-02-13

Stand alone portable sensing system for advanced nanoparticle tracers

#164
14946242
2018-03-20

Systems and methods for collecting cutting samples during oil and gas drilling operations