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Patents Grants
last 30 patents
Information
Patent Grant
pH-responsive nano-gel plugging material, and preparation method th...
Patent number
12,146,095
Issue date
Nov 19, 2024
China National Petroleum Corporation
Jie Zhang
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Method for evaluating downhole working condition of a PDC bit
Patent number
11,959,375
Issue date
Apr 16, 2024
CNPC ENGINEERING TECHNOLOGY R&D COMPANY LIMITED
Guodong Ji
E21 - EARTH DRILLING MINING
Information
Patent Grant
Well cementing method for improving well cementing quality by contr...
Patent number
11,926,787
Issue date
Mar 12, 2024
PetroChina Company Limited
Shuoqiong Liu
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Bionic and dual-phobic high-performance water-based drilling fluid
Patent number
11,787,990
Issue date
Oct 17, 2023
China University of Petroleum (Beijing)
Guancheng Jiang
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
4D quantitative and intelligent diagnosis method and system for spa...
Patent number
11,686,190
Issue date
Jun 27, 2023
China University of Petroleum (Beijing)
Guancheng Jiang
E21 - EARTH DRILLING MINING
Information
Patent Grant
High temperature resistant Portland cement slurry and production me...
Patent number
11,618,844
Issue date
Apr 4, 2023
China National Petroleum Corporation
Hua Zhang
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Expansion tool assembly for expandable tubular
Patent number
11,293,254
Issue date
Apr 5, 2022
China National Petroleum Corporation
Quanli Zhang
E21 - EARTH DRILLING MINING
Information
Patent Grant
Filtrate reducer for temperature-resistant calcium-resistant water-...
Patent number
11,060,009
Issue date
Jul 13, 2021
CNPC ENGINEERING TECHNOLOGY R&D COMPANY LIMITED
Yuping Yang
E21 - EARTH DRILLING MINING
Information
Patent Grant
Temperature-resistant calcium-resistant water-based drilling fluid...
Patent number
11,053,424
Issue date
Jul 6, 2021
CNPC ENGINEERING TECHNOLOGY R&D COMPANY LIMITED
Yuping Yang
B82 - NANO-TECHNOLOGY
Information
Patent Grant
Well cementation working solution prepared from red mud, slag and w...
Patent number
10,975,284
Issue date
Apr 13, 2021
SOUTHWEST PETROLEUM UNIVERSITY
Xiaowei Cheng
E21 - EARTH DRILLING MINING
Information
Patent Grant
Method for evaluating breakage strength of first and second cemente...
Patent number
10,876,945
Issue date
Dec 29, 2020
SOUTHWEST PETROLEUM UNIVERSITY
Xiaowei Cheng
G01 - MEASURING TESTING
Information
Patent Grant
Expandable liner hanger
Patent number
10,858,917
Issue date
Dec 8, 2020
CNPC ENGINEERING TECHNOLOGY R&D COMPANY LIMITED
Quanli Zhang
E21 - EARTH DRILLING MINING
Information
Patent Grant
Cementing plug
Patent number
10,808,496
Issue date
Oct 20, 2020
China National Petroleum Corporation
Hongying Zhang
E21 - EARTH DRILLING MINING
Information
Patent Grant
Plugging agent for temperature-resistant calcium-resistant water-ba...
Patent number
10,745,605
Issue date
Aug 18, 2020
CNPC ENGINEERING TECHNOLOGY R&D COMPANY LIMITED
Yuping Yang
B82 - NANO-TECHNOLOGY
Information
Patent Grant
Mechanical and hydraulic dual-effect expansion device for well dril...
Patent number
10,641,067
Issue date
May 5, 2020
China National Petroleum Corporation
Binggui Xu
E21 - EARTH DRILLING MINING
Information
Patent Grant
Casing windowing method and tool using coiled tubing
Patent number
10,450,801
Issue date
Oct 22, 2019
China National Petroleum Corporation
Yanping Zhang
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
Information
Patent Application
GEOSTEERING METHOD AND APPARATUS, AND STORAGE MEDIUM
Publication number
20250027370
Publication date
Jan 23, 2025
CHINA NATIONAL PETROLEUM CORPORATION
Wang LIN
E21 - EARTH DRILLING MINING
Information
Patent Application
NANOEMULSION AND METHOD FOR PREPARATION THEREOF, AND HIGH-TEMPERATU...
Publication number
20240360354
Publication date
Oct 31, 2024
CHINA NATIONAL PETROLEUM CORPORATION
Lili YAN
E21 - EARTH DRILLING MINING
Information
Patent Application
ULTRA-HIGH TEMPERATURE RESISTANT CEMENT SLURRY SYSTEM FOR CEMENTING...
Publication number
20240336828
Publication date
Oct 10, 2024
CHINA NATIONAL PETROLEUM CORPORATION
Jianzhou JIN
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Application
SET CEMENT MECHANICAL PROPERTIES PARAMETER MEASUREMENT METHOD AND A...
Publication number
20240288348
Publication date
Aug 29, 2024
CHINA NATIONAL PETROLEUM CORPORATION
Jiyun SHEN
G01 - MEASURING TESTING
Information
Patent Application
MUD PRESSURE WAVE SIGNAL MODULATION APPARATUS AND METHOD
Publication number
20240247586
Publication date
Jul 25, 2024
CHINA NATIONAL PETROLEUM CORPORATION
Jiajin Wang
E21 - EARTH DRILLING MINING
Information
Patent Application
CEMENT SLURRY SYSTEM, PREPARATION METHOD THEREFOR AND USE THEREOF
Publication number
20240228858
Publication date
Jul 11, 2024
CHINA NATIONAL PETROLEUM CORPORATION
Jianzhou JIN
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Application
LOST CIRCULATION DETECTION DEVICE
Publication number
20240093599
Publication date
Mar 21, 2024
Petrochina Company Limited
Guangjie YUAN
E21 - EARTH DRILLING MINING
Information
Patent Application
PH-RESPONSIVE NANO-GEL PLUGGING MATERIAL, AND PREPARATION METHOD TH...
Publication number
20230365853
Publication date
Nov 16, 2023
CHINA NATIONAL PETROLEUM CORPORATION
Jie ZHANG
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Application
HIGH-STRENGTH PORTLAND CEMENT SLURRY FOR ULTRA-HIGH TEMPERATURE CEM...
Publication number
20230278927
Publication date
Sep 7, 2023
CHINA NATIONAL PETROLEUM CORPORATION
Hua Zhang
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Application
BIONIC AND DUAL-PHOBIC HIGH-PERFORMANCE WATER-BASED DRILLING FLUID
Publication number
20230133053
Publication date
May 4, 2023
CHINA UNIVERSITY OF PETROLEUM (BEIJING)
Guancheng JIANG
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Application
4D QUANTITATIVE AND INTELLIGENT DIAGNOSIS METHOD AND SYSTEM FOR SPA...
Publication number
20230026538
Publication date
Jan 26, 2023
CHINA UNIVERSITY OF PETROLEUM (BEIJING)
Guancheng JIANG
E21 - EARTH DRILLING MINING
Information
Patent Application
EXPANSION TOOL ASSEMBLY FOR EXPANDABLE TUBULAR
Publication number
20210396092
Publication date
Dec 23, 2021
CHINA NATIONAL PETROLEUM CORPORATION
Quanli Zhang
E21 - EARTH DRILLING MINING
Information
Patent Application
METHOD FOR EVALUATING DOWNHOLE WORKING CONDITION OF A PDC BIT
Publication number
20210301643
Publication date
Sep 30, 2021
CNPC Engineering Technology R&D Company Limited
Guodong JI
E21 - EARTH DRILLING MINING
Information
Patent Application
Expandable Liner Hanger
Publication number
20200332629
Publication date
Oct 22, 2020
CNPC Engineering Technology R&D Company Limited
Quanli Zhang
E21 - EARTH DRILLING MINING
Information
Patent Application
FILTRATE REDUCER FOR TEMPERATURE-RESISTANT CALCIUM-RESISTANT WATER-...
Publication number
20200115612
Publication date
Apr 16, 2020
CNPC Engineering Technology R&D Company Limited
Yuping Yang
E21 - EARTH DRILLING MINING
Information
Patent Application
TEMPERATURE-RESISTANT CALCIUM-RESISTANT WATER-BASED DRILLING FLUID...
Publication number
20200115613
Publication date
Apr 16, 2020
CNPC Engineering Technology R&D Company Limited
Yuping Yang
B82 - NANO-TECHNOLOGY
Information
Patent Application
PLUGGING AGENT FOR TEMPERATURE-RESISTANT CALCIUM-RESISTANT WATER-BA...
Publication number
20200115611
Publication date
Apr 16, 2020
CNPC Engineering Technology R&D Company Limited
Yuping Yang
B82 - NANO-TECHNOLOGY
Information
Patent Application
WELL CEMENTATION WORKING SOLUTION PREPARED FROM RED MUD, SLAG AND W...
Publication number
20200071594
Publication date
Mar 5, 2020
SOUTHWEST PETROLEUM UNIVERSITY
Xiaowei CHENG
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Application
METHOD FOR EVALUATING BREAKAGE STRENGTH OF FIRST AND SECOND CEMENTE...
Publication number
20200011777
Publication date
Jan 9, 2020
SOUTHWEST PETROLEUM UNIVERSITY
Xiaowei CHENG
G01 - MEASURING TESTING
Information
Patent Application
HIGH TEMPERATURE RESISTANT PORTLAND CEMENT SLURRY AND PRODUCTION ME...
Publication number
20190241792
Publication date
Aug 8, 2019
CHINA NATIONAL PETROLEUM CORPORATION
Hua ZHANG
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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