Drilling Technology Research Institute of Sinopec Shengli Petroleum Engineering Co., LTD

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Dongying, CN

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Patents Grantslast 30 patents

Information Patent Grant
Flow splitting device for gas reverse circulation drilling
- Patent number 11,946,334
- Issue date Apr 2, 2024
- China Petroleum and Chemical Corporation
- Chuanwei Zhao
- E21 - EARTH DRILLING MINING
Information Patent Grant
Imaging method and apparatus based on magnetic flux leakage testing
- Patent number 10,048,226
- Issue date Aug 14, 2018
- Tsinghua University
- Songling Huang
- G01 - MEASURING TESTING

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Patents Applicationslast 30 patents

Information Patent Application
Flow Splitting Device for Gas Reverse Circulation Drilling
- Publication number 20230147453
- Publication date May 11, 2023
- China Petroleum and Chemical Corporation
- Chuanwei ZHAO
- E21 - EARTH DRILLING MINING
Information Patent Application
Cyclic Thioether Compound, Vegetable Oil Composition Containing the...
- Publication number 20230141112
- Publication date May 11, 2023
- China Petroleum and Chemical Corporation
- Gongrang LI
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
DOUBLE-CHANNEL FLUID INJECTION APPARATUS
- Publication number 20220243540
- Publication date Aug 4, 2022
- Sinopec Petroleum Engineering Technology Service Co., Ltd.
- Huangang ZHU
- E21 - EARTH DRILLING MINING
Information Patent Application
IMAGING METHOD AND APPARATUS BASED ON MAGNETIC FULX LEAKAGE TESTING
- Publication number 20160161448
- Publication date Jun 9, 2016
- TSINGHUA UNIVERSITY
- SONGLING HUANG
- G01 - MEASURING TESTING
Information Patent Application
Comb polymer, method of preparing the same, and use thereof
- Publication number 20150203736
- Publication date Jul 23, 2015
- Sinopec Oilfield Service Corporation
- Gongrang LI
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...