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NANNIWAN OIL PRODUCTION PLANT, YANCHANG OILFIELD CO., LTD
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YAN'AN, CN
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Patents Grants
last 30 patents
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Patent Grant
System for segmented simultaneous water injection and oil recovery...
Patent number
11,982,166
Issue date
May 14, 2024
Nanniwan Oil Production Plant, Yanchang Oilfield Co., Ltd.
Pingtian Fan
E21 - EARTH DRILLING MINING
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Patent Grant
Fracturing method with synergistic effects of energy enhancement, o...
Patent number
11,840,911
Issue date
Dec 12, 2023
Nanniwan Oil Production Plant, Yanchang Oilfield Co., Ltd.
Pingtian Fan
E21 - EARTH DRILLING MINING
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Patents Applications
last 30 patents
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Patent Application
SYSTEM FOR SEGMENTED SIMULTANEOUS WATER INJECTION AND OIL RECOVERY...
Publication number
20230366302
Publication date
Nov 16, 2023
Nanniwan Oil Production Plant, Yanchang Oilfield Co., Ltd.
Pingtian FAN
E21 - EARTH DRILLING MINING
Information
Patent Application
FRACTURING METHOD WITH SYNERGISTIC EFFECTS OF ENERGY ENHANCEMENT, O...
Publication number
20230193732
Publication date
Jun 22, 2023
Nanniwan Oil Production Plant,Yanchang Oilfield Co., Ltd.
Pingtian FAN
E21 - EARTH DRILLING MINING