China Oilfield Services Limited

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Beijing, US

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Patents Grantslast 30 patents

Information Patent Grant
Hydraulic power system for downhole device and downhole device
- Patent number 12,025,159
- Issue date Jul 2, 2024
- China Oilfield Services Limited
- Zhibin Tian
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Grant
Core detection device of coring instrument and spacer insertion device
- Patent number 12,012,816
- Issue date Jun 18, 2024
- China National Offshore Oil Corporation
- Zhibin Tian
- G01 - MEASURING TESTING
Information Patent Grant
Method, device and medium for acquiring logging parameters
- Patent number 11,927,713
- Issue date Mar 12, 2024
- China Oilfield Services Limited
- Zhimin Jiang
- G01 - MEASURING TESTING
Information Patent Grant
Integrated logging instrument for coring and sampling
- Patent number 11,905,829
- Issue date Feb 20, 2024
- China Oilfield Services Limited
- Tao Lu
- E21 - EARTH DRILLING MINING
Information Patent Grant
Downhole oil level detection device
- Patent number 11,788,405
- Issue date Oct 17, 2023
- China Oilfield Services Limited
- Zhibin Tian
- E21 - EARTH DRILLING MINING
Information Patent Grant
Core detection device of coring instrument
- Patent number 11,739,603
- Issue date Aug 29, 2023
- China National Offshore Oil Corporation
- Zhibin Tian
- E21 - EARTH DRILLING MINING
Information Patent Grant
Connecting structure for drill collar of logging while drilling ins...
- Patent number 11,624,244
- Issue date Apr 11, 2023
- CHINA OILFIELD SERVICES, LIMITED
- Yongren Feng
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Sampling-by-pushing system and setting method thereof
- Patent number 11,072,981
- Issue date Jul 27, 2021
- CHINA OILFIELD SERVICES, LIMITED
- Minggao Zhou
- E21 - EARTH DRILLING MINING
Information Patent Grant
Horizontal-to-vertical drilling module for deep well
- Patent number 11,028,658
- Issue date Jun 8, 2021
- China National Offshore Oil Corporation
- Yongren Feng
- E21 - EARTH DRILLING MINING
Information Patent Grant
Sidewall coring structure directly driven by an electric motor
- Patent number 10,381,899
- Issue date Aug 13, 2019
- China National Offshore Oil Corporation
- Yongren Feng
- E21 - EARTH DRILLING MINING
Information Patent Grant
Wire follow-up protection structure of electric reducer
- Patent number 10,236,667
- Issue date Mar 19, 2019
- China National Offshore Oil Corporation
- Yongren Feng
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
High-pressure fluid mixing pump control system and fluid suction co...
- Patent number 10,208,736
- Issue date Feb 19, 2019
- China National Offshore Oil Corporation
- Yongren Feng
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
System for sampling from formation while drilling
- Patent number 10,180,064
- Issue date Jan 15, 2019
- China National Offshore Oil Corporation
- Yongren Feng
- E21 - EARTH DRILLING MINING
Information Patent Grant
Drilling type sidewall coring apparatus
- Patent number 10,018,038
- Issue date Jul 10, 2018
- China National Offshore Oil Corporation
- Yongren Feng
- E21 - EARTH DRILLING MINING
Information Patent Grant
Rock formation testing method and formation testing instrument
- Patent number 9,988,899
- Issue date Jun 5, 2018
- China National Offshore Oil Corporation
- Yongren Feng
- E21 - EARTH DRILLING MINING
Information Patent Grant
Pup joint for releasing sidewall contact of stratigraphic test devi...
- Patent number 9,982,816
- Issue date May 29, 2018
- China National Offshore Oil Corporation
- Xiaofei Qin
- E21 - EARTH DRILLING MINING
Information Patent Grant
High temperature carbon dioxide corrosion inhibitor
- Patent number 9,404,189
- Issue date Aug 2, 2016
- China National Offshore Oil Corporation
- Yongtao Sun
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Submarine device
- Patent number 8,899,333
- Issue date Dec 2, 2014
- China National Offshore Oil Corporation
- Yongfeng Guo
- E21 - EARTH DRILLING MINING
Information Patent Grant
Measuring device for measuring consistency of cement slurry for a c...
- Patent number 8,820,145
- Issue date Sep 2, 2014
- China Oilfield Services Limited
- Yuwei Luo
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
CORING AND SAMPLING INTEGRATED SUB AND DOWNHOLE INSTRUMENT
- Publication number 20240026747
- Publication date Jan 25, 2024
- China Oilfield Services Limited
- Yongren FENG
- E21 - EARTH DRILLING MINING
Information Patent Application
ADJACENT WELL DETECTION APPARATUS, METHOD AND SYSTEM
- Publication number 20230393296
- Publication date Dec 7, 2023
- China Oilfield Services Limited
- Xi LUO
- E21 - EARTH DRILLING MINING
Information Patent Application
Core Detection Device of Coring Instrument and Spacer Insertion Device
- Publication number 20230194388
- Publication date Jun 22, 2023
- CHINA NATIONAL OFFSHORE OIL CORPORATION
- Zhibin Tian
- E21 - EARTH DRILLING MINING
Information Patent Application
SENSOR MODULE, SENSOR ASSEMBLY AND ACOUSTIC LOGGING TOOL
- Publication number 20230194373
- Publication date Jun 22, 2023
- CHINA NATIONAL OFFSHORE OIL CORPORATION
- Jie LI
- E21 - EARTH DRILLING MINING
Information Patent Application
CORING DEVICE
- Publication number 20220397491
- Publication date Dec 15, 2022
- China Oilfield Services Limited
- Zhibin Tian
- G01 - MEASURING TESTING
Information Patent Application
METHOD, DEVICE AND MEDIUM FOR ACQUIRING LOGGING PARAMETERS
- Publication number 20220342108
- Publication date Oct 27, 2022
- China Oilfield Services Limited
- Zhimin JIANG
- E21 - EARTH DRILLING MINING
Information Patent Application
INTEGRATED LOGGING INSTRUMENT FOR CORING AND SAMPLING
- Publication number 20220316290
- Publication date Oct 6, 2022
- China Oilfield Services Limited
- Tao LU
- E21 - EARTH DRILLING MINING
Information Patent Application
VIBRATION DETECTION APPARATUS APPLIED TO NUCLEAR MAGNETIC RESONANCE...
- Publication number 20220299399
- Publication date Sep 22, 2022
- China Oilfield Services Limited
- Jiawei ZHANG
- G01 - MEASURING TESTING
Information Patent Application
HYDRAULIC POWER SYSTEM FOR DOWNHOLE DEVICE AND DOWNHOLE DEVICE
- Publication number 20220260094
- Publication date Aug 18, 2022
- China Oilfield Services Limited
- Zhibin TIAN
- F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information Patent Application
DOWNHOLE OIL LEVEL DETECTION DEVICE
- Publication number 20220154573
- Publication date May 19, 2022
- China Oilfield Services Limited
- Zhibin Tian
- E21 - EARTH DRILLING MINING
Information Patent Application
METHOD AND SYSTEM FOR MEASURING COMPOSITION AND PROPERTY OF FORMATI...
- Publication number 20220155275
- Publication date May 19, 2022
- China Oilfield Services Limited
- Youxiang ZUO
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
CORE DETECTION DEVICE OF CORING INSTRUMENT
- Publication number 20210285849
- Publication date Sep 16, 2021
- CHINA NATIONAL OFFSHORE OIL CORPORATION
- Zhibin Tian
- G01 - MEASURING TESTING
Information Patent Application
Sampling-by-Pushing System and Setting Method Thereof
- Publication number 20200355034
- Publication date Nov 12, 2020
- CHINA OILFIELD SERVICES, LIMITED
- Minggao ZHOU
- E21 - EARTH DRILLING MINING
Information Patent Application
Horizontal-to-Vertical Drilling Module for Deep Well
- Publication number 20200291735
- Publication date Sep 17, 2020
- CHINA NATIONAL OFFSHORE OIL CORPORATION
- Yongren FENG
- E21 - EARTH DRILLING MINING
Information Patent Application
WIRE FOLLOW-UP PROTECTION STRUCTURE OF ELECTRIC REDUCER
- Publication number 20180323589
- Publication date Nov 8, 2018
- CHINA NATIONAL OFFSHORE OIL CORPORATION
- Yongren Feng
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Sidewall Coring Structure Directly Driven by an Electric Motor
- Publication number 20170214291
- Publication date Jul 27, 2017
- CHINA NATIONAL OFFSHORE OIL CORPORATION
- Yongren FENG
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Drilling Type Sidewall Coring Apparatus
- Publication number 20170107813
- Publication date Apr 20, 2017
- CHINA OILFIELD SERVICES LIMITED
- Yongren FENG
- E21 - EARTH DRILLING MINING
Information Patent Application
Rock Formation Testing Method and Formation Testing Instrument
- Publication number 20160108727
- Publication date Apr 21, 2016
- CHINA NATIONAL OFFSHORE OIL CORPORATION
- Yongren FENG
- E21 - EARTH DRILLING MINING
Information Patent Application
High-Pressure Fluid Mixing Pump Control System and Fluid Suction Co...
- Publication number 20160097377
- Publication date Apr 7, 2016
- CHINA NATIONAL OFFSHORE OIL CORPORATION
- Yongren FENG
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Pup Joint for Releasing Sidewall Contact of Stratigraphic Test Devi...
- Publication number 20150316183
- Publication date Nov 5, 2015
- CHINA NATIONAL OFFSHORE OIL CORP
- Xiaofei QIN
- E21 - EARTH DRILLING MINING
Information Patent Application
Oil Recovery Process with Composition-Adjustable Multi-Component Th...
- Publication number 20150136400
- Publication date May 21, 2015
- China Oilfield Services Limited
- Yongtao Sun
- E21 - EARTH DRILLING MINING
Information Patent Application
High Temperature Carbon Dioxide Corrosion Inhibitor
- Publication number 20150069301
- Publication date Mar 12, 2015
- China Oilfield Services Limited
- Yongtao Sun
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
Submarine Device
- Publication number 20100243262
- Publication date Sep 30, 2010
- CHINA NATIONAL OFFSHORE OIL CORPORATION
- Yongfeng Guo
- E21 - EARTH DRILLING MINING

Trademarklast 30 trademarks

Information Trademark
79108793 - COSL
- Serial number 79108793
- Registration number 4284399
- Filing date Dec 22, 2011
- China Oilfield Services Limited
- 1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry

China Oilfield Services Limited

Organization

Patents Grantslast 30 patents

Hydraulic power system for downhole device and downhole device

Core detection device of coring instrument and spacer insertion device

Method, device and medium for acquiring logging parameters

Integrated logging instrument for coring and sampling

Downhole oil level detection device

Core detection device of coring instrument

Connecting structure for drill collar of logging while drilling ins...

Sampling-by-pushing system and setting method thereof

Horizontal-to-vertical drilling module for deep well

Sidewall coring structure directly driven by an electric motor

Wire follow-up protection structure of electric reducer

High-pressure fluid mixing pump control system and fluid suction co...

System for sampling from formation while drilling

Drilling type sidewall coring apparatus

Rock formation testing method and formation testing instrument

Pup joint for releasing sidewall contact of stratigraphic test devi...

High temperature carbon dioxide corrosion inhibitor

Submarine device

Measuring device for measuring consistency of cement slurry for a c...

Patents Applicationslast 30 patents

CORING AND SAMPLING INTEGRATED SUB AND DOWNHOLE INSTRUMENT

ADJACENT WELL DETECTION APPARATUS, METHOD AND SYSTEM

Core Detection Device of Coring Instrument and Spacer Insertion Device

SENSOR MODULE, SENSOR ASSEMBLY AND ACOUSTIC LOGGING TOOL

CORING DEVICE

METHOD, DEVICE AND MEDIUM FOR ACQUIRING LOGGING PARAMETERS

INTEGRATED LOGGING INSTRUMENT FOR CORING AND SAMPLING

VIBRATION DETECTION APPARATUS APPLIED TO NUCLEAR MAGNETIC RESONANCE...

HYDRAULIC POWER SYSTEM FOR DOWNHOLE DEVICE AND DOWNHOLE DEVICE

DOWNHOLE OIL LEVEL DETECTION DEVICE

METHOD AND SYSTEM FOR MEASURING COMPOSITION AND PROPERTY OF FORMATI...

CORE DETECTION DEVICE OF CORING INSTRUMENT

Sampling-by-Pushing System and Setting Method Thereof

Horizontal-to-Vertical Drilling Module for Deep Well

WIRE FOLLOW-UP PROTECTION STRUCTURE OF ELECTRIC REDUCER

Sidewall Coring Structure Directly Driven by an Electric Motor

Drilling Type Sidewall Coring Apparatus

Rock Formation Testing Method and Formation Testing Instrument

High-Pressure Fluid Mixing Pump Control System and Fluid Suction Co...

Pup Joint for Releasing Sidewall Contact of Stratigraphic Test Devi...

Oil Recovery Process with Composition-Adjustable Multi-Component Th...

High Temperature Carbon Dioxide Corrosion Inhibitor

Submarine Device

Trademarklast 30 trademarks

79108793 - COSL