Patents by Inventor Rongchao CHENG
Rongchao CHENG has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240003205Abstract: A method for significantly reducing and/or preventing loss circulation in a well during drilling operations. The method includes pumping water-based drilling fluid comprising shape memory polymer particles into bore hole while drilling and exposing the drilling fluid to an activation temperature. The polymer particles change shape at activation temperature filling all or portion of fractures in the bore hole thus significantly reducing and/or preventing loss circulation in the well.Type: ApplicationFiled: July 1, 2022Publication date: January 4, 2024Applicants: CNPC USA CORPORATION, BEIJING HUAMEI, INC., CHINA NATIONAL PETROLEUM CORPORATIONInventors: WEIBIN ZHA, MENG LU, JANINE SHIPMAN, JIAXIANG REN, FUCHEN LIU, RONGCHAO CHENG
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Publication number: 20230365853Abstract: Provided in the present invention are a pH-responsive nano-gel plugging material, and a preparation method therefor and the use thereof. The pH-responsive nano-gel plugging material comprises the following raw materials in parts by mass: 50-70 parts of water, 2-3 parts of an emulsifier, 25-35 parts of an acrylic terpolymer, 10-15 parts of a polyalcohol compound, and 10-20 parts of a vinyl pyridine compound. The pH-responsive nano-gel plugging material can be applied to the plugging of Ordovician carbonate rock fractures and micro-karst cave strata, and can automatically identify Ordovician carbonate rock fractures and micro-karst cave leaking layers and realize effective blocking thereof.Type: ApplicationFiled: July 18, 2023Publication date: November 16, 2023Inventors: Jie ZHANG, Rongchao CHENG, Jie FENG, Zhiliang ZHAO, Shuangwei WANG, Long LI, Tianyi ZHANG
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Patent number: 11787990Abstract: The present invention relates to the field of petroleum industry phase oilfield chemistry, and specifically relates to a bionic and dual-phobic drilling fluid. The drilling fluid contains a bionic wall-fixing agent, a bionic lubricant, a super dual-phobic agent, a scrap-carrying agent and a bionic shale inhibitor. The present invention uses the theory of bionics and the theory of a downhole rock surface being double phobic as a basis. By means of using the bionic wall-fixing agent, the bionic lubricant, the super dual-phobic agent, the scrap-carrying agent and the bionic shale inhibitor, which have special properties of imitating animals and plants in nature, and using a series of bionic treatment agents, a set of bionic and dual-phobic drilling fluid systems, which corresponds to an unconventional, complex oil and gas well, is formed.Type: GrantFiled: December 30, 2022Date of Patent: October 17, 2023Assignees: China University of Petroleum (Beijing), CNPC Chuanqing Drilling Engineering Company Limited, CNPC Engineering Technology R&D Company LimitedInventors: Guancheng Jiang, Jinsheng Sun, Yinbo He, Xin Zhang, Chunyao Peng, Tengfei Dong, Bin Tan, Tie Geng, Lili Yang, Xiaohu Luo, Xuwu Luo, Xing Liang, Changwei Chen, Xiaobo Liu, Rongchao Cheng, Jiansheng Luo, Jianguo Zhang, Yong Wang, Daqi Fu, Qifa Ran, Li Zhao, Kaixiao Cui, Xiaoxiao Ni
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Patent number: 11686190Abstract: A 4D quantitative and intelligent diagnosis method for spatio-temporal evolution of oil-gas reservoir damage types and extent includes: determining a characteristic parameter characterizing reservoir damage by each of a plurality of factors based on a spatio-temporal evolution simulation equation of reservoir damage by each of the plurality of factors; and determining an effective characteristic parameter characterizing the damage extent of the reservoir based on the characteristic parameter characterizing reservoir damage by each of the plurality of factors. The method quantitatively simulate the characteristic parameters of reservoir damage caused by the various factors and a total characteristic parameter of the reservoir damage.Type: GrantFiled: July 13, 2022Date of Patent: June 27, 2023Assignees: China University of Petroleum (Beijing), CNPC Chuanqing Drilling Engineering Company Limited, CNPC ENGINEERING TECHNOLOGY R&D COMPANY LIMITEDInventors: Guancheng Jiang, Yinbo He, Tengfei Dong, Chunyao Peng, Lili Yang, Xiaohu Luo, Xuwu Luo, Xing Liang, Bin Tan, Yong Wang, Daqi Fu, Tie Geng, Qihua Ran, Xiaobo Liu, Rongchao Cheng, Zenglin Wang, Gang Chen, Honghao Zhu, Yizheng Li, Li Zhao, Kaixiao Cui
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Publication number: 20230133053Abstract: The present invention relates to the field of petroleum industry phase oilfield chemistry, and specifically relates to a bionic and dual-phobic drilling fluid. The drilling fluid contains a bionic wall-fixing agent, a bionic lubricant, a super dual-phobic agent, a scrap-carrying agent and a bionic shale inhibitor. The present invention uses the theory of bionics and the theory of a downhole rock surface being double phobic as a basis. By means of using the bionic wall-fixing agent, the bionic lubricant, the super dual-phobic agent, the scrap-carrying agent and the bionic shale inhibitor, which have special properties of imitating animals and plants in nature, and using a series of bionic treatment agents, a set of bionic and dual-phobic drilling fluid systems, which corresponds to an unconventional, complex oil and gas well, is formed.Type: ApplicationFiled: December 30, 2022Publication date: May 4, 2023Applicants: China University of Petroleum (Beijing), CNPC Chuanqing Drilling Engineering Company Limited, CNPC Engineering Technology R&D Company LimitedInventors: Guancheng JIANG, Jinsheng SUN, Yinbo HE, Xin ZHANG, Chunyao PENG, Tengfei DONG, Bin TAN, Tie GENG, Lili YANG, Xiaohu LUO, Xuwu LUO, Xing LIANG, Changwei CHEN, Xiaobo LIU, Rongchao CHENG, Jiansheng LUO, Jianguo ZHANG, Yong WANG, Daqi FU, Qifa RAN, Li ZHAO, Kaixiao CUI, Xiaoxiao NI
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Publication number: 20230086238Abstract: An oil-soluble thermosensitive resin lost circulation material for protecting a reservoir includes the following raw materials in parts by weight: 40-60 parts of resin matrix, 15-40 parts of modified asphalt, 5-12 parts of viscosity modifier, 2-5 parts of cross-linking agent, 6-15 parts of softening point modifier, and 1-3 parts of dispersant; it further provides a method for preparing the resin lost circulation material; the resin lost circulation material can melt and adhere in different temperature ranges, rapid plugging is realized, and the plugging time is long; the oil-soluble thermosensitive resin lost circulation material can be dissolved by oil flow during oil well production, so that the reservoir permeability is recovered, so as to achieve the purpose of protecting the hydrocarbon reservoir.Type: ApplicationFiled: August 26, 2022Publication date: March 23, 2023Inventors: Yingrui BAI, Jinsheng SUN, Kaihe LV, Guancheng JIANG, Rongchao CHENG, Weian HUANG, Jintang WANG, Jingping LIU, Xianbin HUANG, Jiafeng JIN, Jian LI, Shenglong SHI
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Patent number: 11578251Abstract: The invention relates to the technical field of oil and gas drilling, and discloses an amphiphilic block polymer ultralow-permeability agent and an intelligent temporary plugging type water-based drilling fluid. The ultralow-permeability agent contains a structural unit provided by styryl hydrophobic monomer, maleic anhydride and acrylamide; the drilling fluid contains two or more of water, sodium bentonite, Pac-Lv, the ultralow-permeability agent, calcium carbonate, one-way plugging agent, white asphalt and barite which are stored in a mixed manner or independently stored.Type: GrantFiled: March 16, 2022Date of Patent: February 14, 2023Assignee: China University of Petroleum (Beijing)Inventors: Yinbo He, Guancheng Jiang, Lili Yang, Tengfei Dong, Bin Tan, Rongchao Cheng, He Shi, Jianguo Zhang, Tie Geng, Jiansheng Luo, Dongmin Jia, Kai Wang, Chunlin Xie, Wuquan Li, Xiaoqing Li
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Publication number: 20230026538Abstract: The invention relates to the technical field of oilfield exploration, and discloses a 4D quantitative and intelligent diagnosis method and system for spatio-temporal evolution of oil-gas reservoir damage types and extent. The method includes: determining a characteristic parameter characterizing reservoir damage by each of a plurality of factors based on a spatio-temporal evolution simulation equation of reservoir damage by each of the plurality of factors; and determining an effective characteristic parameter characterizing the damage extent of the reservoir based on the characteristic parameter characterizing reservoir damage rby each of the plurality of factors. The invention can quantitatively simulate the characteristic parameters of reservoir damage caused by the various factors and a total characteristic parameter of the reservoir damage.Type: ApplicationFiled: July 13, 2022Publication date: January 26, 2023Applicants: China University of Petroleum (Beijing), CNPC Chuanqing Drilling Engineering Company Limited, CNPC ENGINEERING TECHNOLOGY R&D COMPANY LIMITEDInventors: Guancheng JIANG, Yinbo HE, Tengfei DONG, Chunyao PENG, Lili YANG, Xiaohu LUO, Xuwu LUO, Xing LIANG, Bin TAN, Yong WANG, Daqi FU, Tie GENG, Qihua RAN, Xiaobo LIU, Rongchao CHENG, Zenglin WANG, Gang CHEN, Honghao ZHU, Yizheng LI, Li ZHAO, Kaixiao CUI
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Publication number: 20220204833Abstract: The invention relates to the technical field of oil and gas drilling, and discloses an amphiphilic block polymer ultralow-permeability agent and an intelligent temporary plugging type water-based drilling fluid. The ultralow-permeability agent contains a structural unit provided by styryl hydrophobic monomer, maleic anhydride and acrylamide; the drilling fluid contains two or more of water, sodium bentonite, Pac-Lv, the ultralow-permeability agent, calcium carbonate, one-way plugging agent, white asphalt and barite which are stored in a mixed manner or independently stored.Type: ApplicationFiled: March 16, 2022Publication date: June 30, 2022Applicant: China University of Petroleum (Beijing)Inventors: Yinbo He, Guancheng Jiang, Lili Yang, Tengfei Dong, Bin Tan, Rongchao Cheng, He Shi, Jianguo Zhang, Tie Geng, Jiansheng Luo, Dongmin Jia, Kai Wang, Chunlin Xie, Wuquan Li, Xiaoqing Li
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Publication number: 20220049148Abstract: An ultralow-permeability agent contains a structural unit provided by styryl hydrophobic monomer, maleic anhydride and acrylamide; the drilling fluid contains two or more of water, sodium bentonite, Pac-Lv, the ultralow-permeability agent, calcium carbonate, one-way plugging agent, white asphalt and barite which are stored in a mixed manner or independently stored. When the amphiphilic block polymer provided by the invention is used as the ultralow-permeability agent of the intelligent temporary plugging type water-based drilling fluid, the self-adaptive characteristic is realized; according to the amphiphilic block polymer, temporary plugging layer gaps formed in pore and throats by plugging materials in drilling fluid can be fully filled under the condition that the sizes and the distribution of the pore and throats of reservoirs are not required to be clear, so that the permeability of temporary plugging layer is greatly reduced, ultralow-permeability is realized.Type: ApplicationFiled: June 17, 2021Publication date: February 17, 2022Applicant: China University of Petroleum (Beijing)Inventors: Yinbo HE, Guancheng JIANG, Lili YANG, Tengfei DONG, Bin TAN, Rongchao CHENG, He SHI, Jianguo ZHANG, Tie GENG, Jiansheng LUO, Dongmin JIA, Kai WANG, Chunlin XIE, Wuquan LI, Xiaoqing LI