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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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2.发明申请公开(公告)号：US20190249068A1
公开(公告)日：2019-08-15
申请号：US16233727
申请日：2018-12-27
申请人： China University of Petroleum (East China) , China University of Geosciences (Beijing) , Oil and Gas Technology Research Institute, PetroChina Changqing Oilfield Company
发明人： Guang Zhao , Caili Dai , Qing You , Sen Wang , Hai'en Yang , Ping Yi , Lin Li
CPC分类号： C09K8/516 , C09K8/5045 , C09K8/5083 , C09K8/512 , C09K2208/10
摘要： The present invention relates to the field of profile control and flooding in oil fields, particularly to a colloidal nano-graphite-strengthened bulk gel system for dispersed particle gel, and composition thereof. The composition for bulk gel system, containing a polymeric matrix, a resin cross-linking agent, a coagulant, and colloidal nano-graphite, wherein, with respect to 100 parts by weight of the polymeric matrix, a content of the resin cross-linking agent is 30-150 parts by weight, a content of the coagulant is 5-100 parts by weight, and a content of the colloidal nano-graphite is 3-30 parts by weight; wherein, the polymeric matrix is partially hydrolyzed polyacrylamide with weight-average molecular weight within a range of 5,000,000-8,000,000 g/mol; the coagulant is one or more of chloride salt coagulant and alcohol amine coagulant. The specific components in the composition for dispersed particle gel in the present invention have excellent compatibility with each other, and can form a high-strength bulk gel system within 3-6 h at 85-95° C., and the obtained dispersed particle gel has relatively high temperature-resistance and salinity-resistance properties.
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公开(公告)号：US10414969B2
公开(公告)日：2019-09-17
申请号：US16233727
申请日：2018-12-27
申请人： China University of Petroleum (East China) , China University of Geosciences (Beijing) , Oil and Gas Technology Research Institute, PetroChina Changqing Oilfield Company
发明人： Guang Zhao , Caili Dai , Qing You , Sen Wang , Hai'en Yang , Ping Yi , Lin Li
摘要： The present invention relates to the field of profile control and flooding in oil fields, particularly to a colloidal nano-graphite-strengthened bulk gel system for dispersed particle gel, and composition thereof. The composition for bulk gel system, containing a polymeric matrix, a resin cross-linking agent, a coagulant, and colloidal nano-graphite, wherein, with respect to 100 parts by weight of the polymeric matrix, a content of the resin cross-linking agent is 30-150 parts by weight, a content of the coagulant is 5-100 parts by weight, and a content of the colloidal nano-graphite is 3-30 parts by weight; wherein, the polymeric matrix is partially hydrolyzed polyacrylamide with weight-average molecular weight within a range of 5,000,000-8,000,000 g/mol; the coagulant is one or more of chloride salt coagulant and alcohol amine coagulant. The specific components in the composition for dispersed particle gel in the present invention have excellent compatibility with each other, and can form a high-strength bulk gel system within 3-6h at 85-95° C., and the obtained dispersed particle gel has relatively high temperature-resistance and salinity-resistance properties.
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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：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：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：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：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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公开(公告)号：US10442976B1
公开(公告)日：2019-10-15
申请号：US16276027
申请日：2019-02-14
发明人： Qing You , Caili Dai , Long He , Jichao Fang , Baolei Jiao , Liang Li , Guang Zhao , Yifei Liu , Yan Zhang , Pan Wang
摘要： An oil-soluble coated particle flow modifier, a preparation method thereof, and a use thereof in fractured-vuggy carbonate reservoirs mining. The oil-soluble coated particle flow modifier is of a core-shell structure, which has a core layer of a coated core and a shell layer of a coating agent, wherein the coated core is made of a plugging material, and the coating agent consists of petroleum resin and hollow beads. Based on the total weight of the coated particle flow modifier, the content of the petroleum resin, the hollow beads, the cotton linters, and the coated cores is 10-40 wt %, 9-40 wt %, 1-10 wt %, and 35-80 wt %, respectively. A preparation method of the coated particle flow modifier and a use of the coated particle flow modifier in fractured-vuggy carbonate reservoirs mining to improve oil recovery is also provided.
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