ClassID:

135734

E21B49/083 - 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 down-hole means for trapping a fluid sample Samplers adapted to be lowered into or retrieved from a landing nipple, e.g. for testing a well without removing the drill string

Recent Application in this class:
#1
20250059847
2025-02-20

PROCESSES FOR INJECTION OF FLUIDS INTO A WELLBORE VIA DRILL PIPE

#2
20240401478
2024-12-05

Natural hydrogen gas sampling system and method

#3
20240209728
2024-06-27

Processes for injection of fluids into a wellbore

#4
20230221459
2023-07-13

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

#5
20220136388
2022-05-05

Sampling formation fluid in oil and gas applications

#6
20210095562
2021-04-01

Method of minimizing immiscible fluid sample contamination

#7
20200400858
2020-12-24

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

#8
20200378251
2020-12-03

LIQUID SAMPLING DEVICE AND ASSOCIATED METHODS

#9
20190242791
2019-08-08

Press-type water sampling device

#10
20170247973
2017-08-31

Systems and methods for an expandable packer

#11
20160362977
2016-12-15

System for sampling from formation while drilling

#12
20160290078
2016-10-06

Flow controller for use in drilling operations

#13
20150260038
2015-09-17

Well completion sliding sleeve valve based sampling system and method

#14
20150176407
2015-06-25

Method of obtaining asphaltene content of crude oils

#15
20150167458
2015-06-18

System And Method For Detecting Hydrogen Sulfide In A Formation Sampling Tool

#16
20150096765
2015-04-09

Fluid container reloading tool

#17
20150092816
2015-04-02

Method for the isobaric transfer of a fluid from a deposit and device for implementing such a method

#18
20130025854
2013-01-31

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

#19
20100095758
2010-04-22

Apparatus and methods for collecting a downhole sample

#20
20090126996
2009-05-21

Formation evaluation while drilling

#21
20090107725
2009-04-30

SYSTEM AND METHOD FOR LOGGING SOIL PROPERTIES IN A BOREHOLE

#22
20080087470
2008-04-17

Formation Evaluation While Drilling

#23
20060260805
2006-11-23

Apparatus and method for obtaining downhole samples

#24
15288783
2017-09-26

Diffusion sampler

#25
13412606
2014-11-25

Upward flow constructed wetland for treatment of water contaminated with chlorinated aliphatics