ClassID:

135704

E21B47/10 - page 4 - CPC Classification

Classification description:

Survey of boreholes or wells Locating fluid leaks, intrusions or movements

Recent Application in this class:
#901
20110040501
2011-02-17

Real-time measurement of reservoir fluid properties

#902
20110040485
2011-02-17

Method of measuring multi-phase fluid flow downhole

#903
20110036629
2011-02-17

Rotating control head leak detection systems

#904
20110029273
2011-02-03

Method and apparatus to monitor reformation and replacement of CO/CHgas hydrates

#905
20110024130
2011-02-03

Plunger lift with chemical injection

#906
20110023587
2011-02-03

Vibrating wire viscometers

#907
20110018733
2011-01-27

Monitoring of undesirable fluid ingress into subsea control modules

#908
20100332138
2010-12-30

Pulsed neutron based monitoring of COin enhanced recovery and sequestration projects

#909
20100326654
2010-12-30

Monitoring downhole production flow in an oil or gas

#910
20100326651
2010-12-30

Isotopic identification of production by individual formations in commingled gas wells

#911
20100324873
2010-12-23

Method and system for estimating three phase fluid flow for individual wells

#912
20100314104
2010-12-16

METHOD OF USING PRESSURE SIGNATURES TO PREDICT INJECTION WELL ANOMALIES

#913
20100313647
2010-12-16

Method of downhole characterization of formation fluids, measurement controller for downhole characterization of formation fluids, and apparatus for downhole characterization of formation fluids

#914
20100307743
2010-12-09

Method of determining parameters of a layered reservoir

#915
20100305882
2010-12-02

Method and apparatus for monitoring multiphase fluid flow

#916
20100305866
2010-12-02

Estimating fluid flow in a reservoir

#917
20100270019
2010-10-28

METHOD OF OBTAINING A TREATMENT COMPOSITION FOR IMPROVING THE PRODUCTIVITY OF HYDROCARBON PRODUCING WELLS

#918
20100263862
2010-10-21

Formation fluid evaluation

#919
20100258304
2010-10-14

In-situ evaluation of reservoir sanding and fines migration and related completion, lift and surface facilities design

#920
20100258303
2010-10-14

Annulus mud flow rate measurement while drilling and use thereof to detect well dysfunction

#921
20100255587
2010-10-07

Apparatus and method for measuring concentrations of scale-forming ions

#922
20100228502
2010-09-09

System and method for monitoring fluid flow through an electrical submersible pump

#923
20100223011
2010-09-02

Reflectometry real time remote sensing for in situ hydrocarbon processing

#924
20100219334
2010-09-02

System and method for wellbore monitoring

#925
20100212763
2010-08-26

Well gauging system and method

#926
20100181472
2010-07-22

Method and Apparatus to Determine Characteristics of an Oil-Based Mud Downhole

#927
20100163718
2010-07-01

METHOD AND APPARATUS FOR INCREASING THE EFFICIENCY OF A FLUORESCENCE MEASUREMENT CELL

#928
20100161229
2010-06-24

Apparatus and methods for gas volume retained coring

#929
20100154530
2010-06-24

Rotating flow meter using passive non-permanent magnet markers

#930
20100154529
2010-06-24

Methods and apparatus to evaluate subterranean formations

#931
20100147066
2010-06-17

METHOD OF DETERMINING END MEMBER CONCENTRATIONS

#932
20100147065
2010-06-17

Microfluidic methods and apparatus to perform in situ chemical detection

#933
20100126711
2010-05-27

Downhole modulator apparatus

#934
20100111467
2010-05-06

Measuring apparatus, venturi and venturi insertion tool

#935
20100100354
2010-04-22

Dynamic calculation of allocation factors for a producer well

#936
20100089142
2010-04-15

Process utilizing natural carbon-13 isotope for identification of early breakthrough of injection water in oil wells

#937
20100089141
2010-04-15

Downhole annular measurement system and method

#938
20100078164
2010-04-01

Permanent downhole deployment of optical sensors

#939
20100051266
2010-03-04

Use of micro-electro-mechanical systems MEMS in well treatments

#940
20100023269
2010-01-28

Managing flow testing and the results thereof for hydrocarbon wells

#941
20100018305
2010-01-28

Rotating fluid flow measurement device and method

#942
20100018287
2010-01-28

WIRLELINE DOWNHOLE GAS CHROMATOGRAPH AND DOWNHOLE GAS CHROMATOGRAPHY METHOD

#943
20100017130
2010-01-21

Method of ranking geomarkers and compositional allocation of wellbore effluents

#944
20100006284
2010-01-14

Downhole characterization of formation fluid as a function of temperature

#945
20090319242
2009-12-24

Multi-scale method for multi-phase flow in porous media

#946
20090308601
2009-12-17

EVALUATING MULTIPHASE FLUID FLOW IN A WELLBORE USING TEMPERATURE AND PRESSURE MEASUREMENTS

#947
20090308152
2009-12-17

Christmas tree with internally positioned flowmeter

#948
20090308151
2009-12-17

Christmas tree with internally positioned flowmeter

#949
20090294175
2009-12-03

Downhole gas chromatograph

#950
20090289627
2009-11-26

Method of determining a radial profile of a formation parameter indicative of formation treatment efficiency

#951
20090272529
2009-11-05

Method for selective activation of downhole devices in a tool string

#952
20090271129
2009-10-29

Method, apparatus and system for characterizing two phase fluid flow in an injection well

#953
20090266538
2009-10-29

Method of modelling enhanced recovery by polymer injection

#954
20090266536
2009-10-29

System and method for sensing flow rate and specific gravity within a wellbore

#955
20090266175
2009-10-29

Apparatus and method for characterizing two phase fluid flow

#956
20090266155
2009-10-29

Apparatus and method for fluid flow measurement with sensor shielding

#957
20090260805
2009-10-22

Methods of inferring flow in a wellbore

#958
20090251331
2009-10-08

Mud channel characterization over depth

#959
20090218097
2009-09-03

Wellbore intervention tool

#960
20090211754
2009-08-27

Wireless tag tracer method

#961
20090205815
2009-08-20

DOWNHOLE TOOL FOR MEASURING A FLUID FLOW RATE THERETHROUGH AND A WELL COMPLETION INCORPORATING SAME

#962
20090200016
2009-08-13

Method and apparatus to facilitate formation sampling

#963
20090198477
2009-08-06

Method for comparing and back allocating production

#964
20090194330
2009-08-06

System, program products, and methods for controlling drilling fluid parameters

#965
20090188665
2009-07-30

Monitoring of downhole parameters and tools utilizing fiber optics

#966
20090183871
2009-07-23

Microfluidic separator

#967
20090167297
2009-07-02

Optical fiber system and method for wellhole sensing of fluid flow using diffraction effect of faraday crystal

#968
20090166030
2009-07-02

Method to monitor reservoir fracture development and its geometry

#969
20090164189
2009-06-25

Method of optimizing the development of a fluid reservoir by taking into account a geologic and transient exchange term between matrix blocks and fractures

#970
20090159337
2009-06-25

Method for detecting formation pore pressure by detecting pumps-off gas downhole

#971
20090159260
2009-06-25

Method for calculating the ratio of relative permeabilities of formation fluids and wettability of a formation downhole, and a formation testing tool to implement the same

#972
20090151937
2009-06-18

Well thermal insulation for formation sampling of viscous fluids and methods of use thereof

#973
20090151426
2009-06-18

High pressure and high temperature chromatography

#974
20090150127
2009-06-11

Method, system and apparatus for numerical black oil delumping

#975
20090100925
2009-04-23

SYSTEM AND METHOD FOR COATING FLEXURAL MECHANICAL RESONATORS

#976
20090078036
2009-03-26

Method of downhole characterization of formation fluids, measurement controller for downhole characterization of formation fluids, and apparatus for downhole characterization of formation fluids

#977
20090044617
2009-02-19

Downhole gas detection in drilling muds

#978
20090032249
2009-02-05

Method and system to obtain a compositional model of produced fluids using separator discharge data analysis

#979
20090007650
2009-01-08

Method and Apparatus for Wellsite Verification of Properties of a Fluid

#980
20080316049
2008-12-25

RFID Tag Tracer Method and Apparatus

#981
20080314139
2008-12-25

Method and apparatus for ion-selective discrimination of fluids downhole

#982
20080307891
2008-12-18

Method and apparatus for measuring the density of one component in a multi-component flow

#983
20080307877
2008-12-18

Perforation logging tool and method

#984
20080283296
2008-11-20

Liquid and solids analysis of drilling fluids using fractionation and imaging

#985
20080283294
2008-11-20

Apparatus and method for continuous measurement of a physical property of a drilling fluid

#986
20080262735
2008-10-23

System and method for water breakthrough detection and intervention in a production well

#987
20080257544
2008-10-23

System and Method for Crossflow Detection and Intervention in Production Wellbores

#988
20080257032
2008-10-23

Christmas tree with internally positioned flowmeter

#989
20080245960
2008-10-09

Method and Apparatus to Determine Characteristics of an Oil-Based Mud Downhole

#990
20080236816
2008-10-02

Method for detecting fluid leakage from a subterranean formation

#991
20080234939
2008-09-25

Determining fluid rate and phase information for a hydrocarbon well using predictive models

#992
20080217005
2008-09-11

Automated oil well test classification

#993
20080181555
2008-07-31

Well bore sensing

#994
20080169104
2008-07-17

Method of collecting crude oil and crude oil collection header apparatus

#995
20080156484
2008-07-03

Method and system for altering pore pressure in a fracturing operation

#996
20080135237
2008-06-12

MONITORING INJECTED NONHYDROCARBON AND NONAQUEOUS FLUIDS THROUGH DOWNHOLE FLUID ANALYSIS

#997
20080134775
2008-06-12

Apparatus and methods for obtaining measurements below bottom sealing elements of a straddle tool

#998
20080134774
2008-06-12

Wellbore production tool and method

#999
20080115577
2008-05-22

High pressure resonant vibrating-tube densitometer

#1000
20080066962
2008-03-20

Apparatus and Methods for Measurement of Solids in a Wellbore

#1001
20080047706
2008-02-28

Method of obtaining a treatment composition for improving the productivity of hydrocarbon producing wells

#1002
20080046186
2008-02-21

Method to determine fluid phase distribution and quantify holdup in a wellbore

#1003
20080023328
2008-01-31

Electro-chemical sensor

#1004
20080022763
2008-01-31

Apparatus and method for fluid flow measurement with sensor shielding

#1005
20070295501
2007-12-27

Method and system for production metering of oil wells

#1006
20070289739
2007-12-20

Fluid diversion measurement methods and systems

#1007
20070272552
2007-11-29

Electro-chemical sensor

#1008
20070261486
2007-11-15

Means for measuring fluid flow in a pipe

#1009
20070235223
2007-10-11

SYSTEMS AND METHODS FOR MANAGING DOWNHOLE PRESSURE

#1010
20070221407
2007-09-27

Permanent downhole deployment of optical sensors

#1011
20070210799
2007-09-13

Geosteering in earth formations using multicomponent induction measurements

#1012
20070205000
2007-09-06

Instrumentation for a downhole deployment valve

#1013
20070203681
2007-08-30

Monte Carlo simulation of well logging data

#1014
20070193351
2007-08-23

Method and apparatus for ion-selective discrimination of fluids downhole

#1015
20070187092
2007-08-16

System and method for detecting pressure disturbances in a formation while performing an operation

#1016
20070175632
2007-08-02

Method and apparatus for insulating a resonator downhole

#1017
20070175273
2007-08-02

Method for measuring formation properties with a time-limited formation test

#1018
20070151762
2007-07-05

Method for determining formation fluid entry into or drilling fluid loss from a borehole using a dynamic annular pressure control system

#1019
20070151728
2007-07-05

Method to detect low salinity injection water encroachment into oil formations

#1020
20070119244
2007-05-31

Methods and apparatus for the downhole characterization of formation fluids

#1021
20070114023
2007-05-24

Gas lift flow surveillance device

#1022
20070095541
2007-05-03

Method and apparatus for controlling a quantity of a specific gas in a group of gases produced from a given well bore

#1023
20070095535
2007-05-03

Method and apparatus for insulating a resonator downhole

#1024
20070095528
2007-05-03

Method of monitoring fluid placement during stimulation treatments

#1025
20070065337
2007-03-22

Apparatus and method for measuring concentrations of scale-forming ions

#1026
20070062695
2007-03-22

Protective barriers for small devices

#1027
20070061087
2007-03-15

Method, system and apparatus for black oil delumping

#1028
20070017673
2007-01-25

Determining and tracking downhole particulate deposition

#1029
20070000692
2007-01-04

Method of monitoring gas influx into a well bore when drilling an oil and gas well, and apparatus constructed in accordance with the method

#1030
20060288769
2006-12-28

High temperature near infrared for measurements and telemetry in well boreholes

#1031
20060272810
2006-12-07

Downhole pressure containment system

#1032
20060272809
2006-12-07

Wellbores utilizing fiber optic-based sensors and operating devices

#1033
20060266520
2006-11-30

Method for detecting fluid leakage from a subterranean formation

#1034
20060266109
2006-11-30

Method and apparatus for reservoir characterization using photoacoustic spectroscopy

#1035
20060226699
2006-10-12

Methods and apparatus for the downhole characterization of formation fluids

#1036
20060157239
2006-07-20

Method and apparatus for logging a well using a fiber optic line and sensors

#1037
20060144622
2006-07-06

Rotating control head radial seal protection and leak detection systems

#1038
20060107736
2006-05-25

Measuring sonde for a hydrocarbon well

#1039
20060090892
2006-05-04

System and method for utilizing a skin sensor in a downhole application

#1040
20060089804
2006-04-27

While-drilling methodology for determining earth formation characteristics and other useful information based upon streaming potential measurements

#1041
20060065392
2006-03-30

System and method for crude oil production stemming from natural emanations and leaks from capped oil wells

#1042
20060054316
2006-03-16

Method and apparatus for production logging

#1043
20060041382
2006-02-23

Method for interpreting data measured in a hydrocarbon well in production

#1044
20060032533
2006-02-16

System and method for automating or metering fluid recovered at a well

#1045
20060008913
2006-01-12

Microfluidic separator

#1046
20060005965
2006-01-12

Sensor system

#1047
20050278121
2005-12-15

Geosteering in anisotropic formations using multicomponent induction measurements

#1048
20050268702
2005-12-08

Non-intrusive multiphase flow meter

#1049
20050235761
2005-10-27

Compact device for measuring the speed and the direction of rotation of an object

#1050
20050221495
2005-10-06

Method and composition for improving NMR analysis of formation fluids

#1051
20050199394
2005-09-15

Production profile determination and modification system

#1052
20050187715
2005-08-25

Method for measuring formation properties with a time-limited formation test

#1053
20050183515
2005-08-25

Retrievable downhole flow meter

#1054
20050182566
2005-08-18

Method and apparatus for determining filtrate contamination from density measurements

#1055
20050173113
2005-08-11

Method for measuring formation properties with a time-limited formation test

#1056
20050172710
2005-08-11

Method for borehole conductivity profiling

#1057
20050133261
2005-06-23

Formation fluid characterization using flowline viscosity and density data an oil-based mud environment

#1058
20050126777
2005-06-16

Apparatus and methods for measurement of solids in a wellbore

#1059
20050109098
2005-05-26

Method and apparatus for downhole fluid analysis using molecularly imprinted polymers

#1060
20050098312
2005-05-12

Method for measuring formation properties with a time-limited formation test

#1061
20050087009
2005-04-28

Method for measuring formation properties with a time-limited formation test

#1062
20050034857
2005-02-17

Optical fiber conveyance, telemetry, and/or actuation

#1063
20050012036
2005-01-20

Providing a light cell in a wellbore

#1064
19210522
2026-04-21

Systems and methods for controlled packer inflation

#1065
18671890
2025-09-02

Adjustable venturi for multiphase flowmeter

#1066
18615439
2025-08-12

Vortex filtration for debris-sensitive components in a well

#1067
18427213
2025-07-29

Reducing an acid gas concentration in well production

#1068
17903633
2023-12-12

Downhole fluid acquisition, hidden pay identification, and stimulation system and method

#1069
17566955
2022-11-01

Determining a laminar-turbulent transition region for a wellbore fluid

#1070
17505316
2022-11-08

Machine learning approach for automated probabilistic well operation optimization

#1071
17480734
2023-01-31

Oil recovery of a reservoir based on residual oil saturation

#1072
17064862
2022-01-25

Interactive packer module and system for isolating and evaluating zones in a wellbore

#1073
16912778
2022-05-03

System and method thermopile energy harvesting for subsurface well bore sensors

#1074
16789150
2022-04-19

Method of determining fracture interference in a hydraulically fractured well

#1075
16189971
2020-09-01

Fluid outflow measurement system and method

#1076
15388753
2019-09-03

Methods and systems for spatial change indicator analysis

#1077
15293006
2017-04-04

Experimental apparatus for studying gas invasion and migration mechanism in oil and gas wellbores

#1078
15248879
2017-11-21

Mud activation measurement while drilling

#1079
15090999
2017-04-25

Subsea test adaptor for calibration of subsea multi-phase flow meter during initial well clean-up and test and methods of using same

#1080
15047313
2017-01-17

Flow measuring system having a housing with a flow measurement device and a deflector plate attached over a hole in a riser

#1081
14188597
2014-07-01

System for monitoring a marine well for shallow-water flow