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公开(公告)号：US20190119558A1
公开(公告)日：2019-04-25
申请号：US16155101
申请日：2018-10-09
申请人： China University of Petroleum (East China) , Oil and Gas Technology Research Institute, PetroChina Changqing Oilfield Company
发明人： Guang Zhao , Caili Dai , Haien Yang , Ping Yi , Yuyang Li , Jiaping Tao , Yahui Lv , Xue Yao , Qing You
摘要： The invention provides a modified graphite particle system for strengthening a polymer/binary/ternary composite oil displacement system. The modified graphite particle system comprises the following components: 1-5 parts by mass fraction dispersed graphite particles, 0.2-0.6 parts by mass fraction dispersant, 0.1-0.5 parts by mass fraction wettability modifier, and deionized water that accounts for the remaining content, based on 100 parts by total mass fraction of the components. In addition, the present invention also provides a preparation and a use of the modified graphite particle system for strengthening the polymer/binary/ternary composite oil displacement system. The modified graphite particle system for strengthening the polymer/binary/ternary composite oil displacement system can be used to improve mobility regulation ability and oil displacement efficiency in an injection stage, enhance injection pressure in a follow-up water displacement stage, and increase the oil displacement effect of the composite oil displacement system to the greatest extent.
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公开(公告)号：US10266753B1
公开(公告)日：2019-04-23
申请号：US16040307
申请日：2018-07-19
发明人： Guang Zhao , Caili Dai , Chenglin Gu , Yuyang Li , Yahui Lv , Qing You , Yongpeng Sun , Mingwei Zhao , Yining Wu
摘要： The present invention provides a modified nano-graphite particle three-phase foam profile control and flooding system, which comprises a liquid phase and a gas phase, wherein the liquid phase comprises 0.15%-0.35% foaming agent, 0.04-0.1% foam stabilizer, and water that accounts for the remaining content, the sum of weight percentages of above components is 100%; a gas-liquid ratio of the gas phase to the liquid phase is (1-3):1. The foaming agent is selected from one of alkylsulfopropyl betaine and alkylamidopropyl betaine or a combination of them. The foam stabilizer is modified nano-graphite particles in 80-150 nm particle diameter. The present invention further provides a preparation method of the modified nano-graphite particle and a preparation method of the three-phase foam profile control and flooding system. The nano-graphite particle three-phase foam profile control and flooding system provided in the present invention can greatly improve the stability of generated foams, has excellent fluidity control capability, is low in cost, simple to prepare, and convenient for large-scale field construction.
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公开(公告)号：US10294409B2
公开(公告)日：2019-05-21
申请号：US16155101
申请日：2018-10-09
申请人： China University of Petroleum (East China) , Oil and Gas Technology Research Institute, PetroChina Changqing Oilfield Company
发明人： Guang Zhao , Caili Dai , Haien Yang , Ping Yi , Yuyang Li , Jiaping Tao , Yahui Lv , Xue Yao , Qing You
摘要： The invention provides a modified graphite particle system for strengthening a polymer/binary/ternary composite oil displacement system. The modified graphite particle system comprises the following components: 1-5 parts by mass fraction dispersed graphite particles, 0.2-0.6 parts by mass fraction dispersant, 0.1-0.5 parts by mass fraction wettability modifier, and deionized water that accounts for the remaining content, based on 100 parts by total mass fraction of the components. In addition, the present invention also provides a preparation and a use of the modified graphite particle system for strengthening the polymer/binary/ternary composite oil displacement system. The modified graphite particle system for strengthening the polymer/binary/ternary composite oil displacement system can be used to improve mobility regulation ability and oil displacement efficiency in an injection stage, enhance injection pressure in a follow-up water displacement stage, and increase the oil displacement effect of the composite oil displacement system to the greatest extent.
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公开(公告)号：US10119065B2
公开(公告)日：2018-11-06
申请号：US15668900
申请日：2017-08-04
发明人： Qing You , Caili Dai , Yan Zhang , Mingwei Zhao , Yining Wu , Guang Zhao , Yongpeng Sun , Huan Wang , Yifei Liu , Jichao Fang
IPC分类号： C09K8/68 , C07D207/325 , C09K8/86
摘要： The present invention relates to the field of oilfield chemistry, and discloses a composition for fracturing and displacement and a method for fracturing and displacement of a tight oil reservoir. The composition contains a pyrrolic compound represented by formula (1) and a laurate; in the formula (1), M− is halide ion, R1 is C1-C5 linear or branched alkyl, and R2 is C15-C20 linear or branched alkyl. The composition for fracturing and displacement provided in the present invention has functions of fracturing, solid carrying, imbibition, drainage and oil displacement, so as to maximize the recovery efficiency of tight oil, and attain economic and social benefits by implementing multiple functions with a single composition, saving resources, and reducing cost.
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公开(公告)号：US10081604B1
公开(公告)日：2018-09-25
申请号：US15716207
申请日：2017-09-26
IPC分类号： E21B33/13 , E21B43/22 , C07D233/14 , C07D233/20 , C09K8/594 , E21B43/16 , G01N21/35 , G01R33/46
CPC分类号： C07D233/14 , C07D233/20 , C09K8/506 , C09K8/594 , E21B43/164 , G01N2021/3595 , G01R33/46
摘要： An imidazoline compound, a mobility control system, a plugging agent for gas channelling, and a method for carbon dioxide flooding. The structure of the imidazoline compound is represented by formula (1), in which R is pentadecyl, heptadecenyl, or heptadecyl. A mobility control system that contains the imidazoline compound can interact with carbon dioxide to form a plugging agent for gas channelling, and thereby attains a plugging effect for carbon dioxide channelling in a carbon dioxide flooding process.
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公开(公告)号：US10584276B2
公开(公告)日：2020-03-10
申请号：US16392315
申请日：2019-04-23
申请人： CHINA UNIVERSITY OF PETROLEUM (EAST CHINA) , CHINA UNIVERSITY OF GEOSCIENCES (BEIJING) , SCIENCE AND TECHNOLOGY RESEARCH INSTITUTE LTD., PETRO CHINA
发明人： Caili Dai , Mingwei Gao , Mingwei Zhao , Qing You , Guang Zhao , Yining Wu , Yongpeng Sun , Lin Li , Yifei Liu , He Liu , Xin Wang , Baoshan Guan
摘要： A CO2-sensitive fracturing and displacement fluid contains a surfactant, an auxiliary agent, water, and CO2, wherein CO2 is liquid and/or supercritical CO2. The CO2-sensitive fracturing and displacement fluid provided by the invention does not flow back after completion of fracturing construction, and the gel breaking fluid displacement is carried out after soak for a period of time to improve the tight oil recovery ratio. The CO2-sensitive fracturing and displacement fluid exerts the “one-agent multi-purpose” function of sand carrying, CO2 energization and oil displacement, surfactant imbibition and oil discharge of a fracturing-displacement system in different development and production stages, and achieves the dual goals of expanding the utilization degree of tight oil and improving the displacement efficiency of the tight oil, which can effectively reduce costs and achieve the goal of unified, highly efficient and green development of oil and gas fields.
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公开(公告)号：US10550318B1
公开(公告)日：2020-02-04
申请号：US16396010
申请日：2019-04-26
申请人： China University of Petroleum (East China) , Oil and Gas Technology Research Institute, PetroChina Changqing Oilfield Company , China University of Geosciences (Beijing) , Northwest Oilfield Branch Engineering Technology Research Institute, Sinopec Group
发明人： Caili Dai , Guang Zhao , Haien Yang , Ping Yi , Sen Wang , Qing You , Long He , Mingwei Zhao , Yining Wu
摘要： Provided a skid-mounted dispersed particle gel production device, dispersed particle gel and a preparation method and use thereof. The device sequentially comprises, in a delivery direction of a material flow, a jet blending system, a bulk gel chemical crosslinking reaction system, a shearing and grinding system, a storage system. and an intelligent regulation system Rapid crosslinking reaction of bulk gel in a medium/high-temperature oil reservoir and large-scale preparation of multiscale dispersed particle gel can be realised, and the device is applied to continuous production in a complex environment such as a tidal flat, a hill and an offshore work platform.
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公开(公告)号：US10189790B1
公开(公告)日：2019-01-29
申请号：US16029516
申请日：2018-07-06
IPC分类号： C09K8/42 , E21B33/13 , C07D233/14 , C09K8/594 , C07D233/20 , G01R33/46 , G01N21/35 , E21B43/16
摘要： An imidazoline compound, a mobility control system, a plugging agent for gas channeling, and a method for carbon dioxide flooding. The structure of the imidazoline compound is represented by formula (1), in which R is pentadecyl, heptadecenyl, or heptadecyl. A mobility control system that contains the imidazoline compound can interact with carbon dioxide to form a plugging agent for gas channeling, and thereby attains a plugging effect for carbon dioxide channeling in a carbon dioxide flooding process.
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公开(公告)号：US11247909B1
公开(公告)日：2022-02-15
申请号：US17237772
申请日：2021-04-22
发明人： Guang Zhao , Caili Dai , Lihao Liang , Dongfang Lyu , Qing You , Yifei Liu , Ning Yang , Ning Sun
IPC分类号： C01B32/372 , C01B32/342 , C09K8/58 , B82Y40/00
摘要： The present disclosure discloses a multi-grafting site carbon nanomaterial comprising a structural unit represented by Formula (1), hydroxyl groups and a structural unit represented by Formula (2); wherein R is one or more selected from the group consisting of tolyl, diphenylmethyl, isophorone group and dicyclohexylmethyl;
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公开(公告)号：US10982137B1
公开(公告)日：2021-04-20
申请号：US16899827
申请日：2020-06-12
申请人： China University of Petroleum (East China) , The Research Institute of Petroleum Exploration and Development (RIPED) of the Petro China Company , China University of Geosciences (Beijing)
发明人： Guang Zhao , Caili Dai , Xu Jin , Ning Yang , Qing You , Mingwei Zhao
IPC分类号： C08F220/56 , C09K11/06 , C08J3/075
摘要： The present disclosure discloses a fluorescent dispersed particle gel, a fluorescent gel, a fluorescent modified polyacrylamide composite, and a preparation method and use thereof.
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