Patents Assigned to SINOPEC ZHONGYUAN OILFIELD SERVICE CORPORATION DRILLING ENGINEERING RESEARCH
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Patent number: 10047200Abstract: A dendritic polymer, a dendritic polymer monomer, and a hyperbranched copolymer are described. The dendritic polymer monomer has a structure denoted by Z?-(Q)n-Y, wherein Z? represents a structure denoted by the following formula (a) and/or formula (b), Q represents a dendritic constitutional repeating unit of the dendritic polymer monomer, n represents the generation number of the dendritic polymer monomer, and is an integer within a range of 2-6, Y represents a group that contains SO3? and COO?, R14-R16 can be identical to or different from each other, and are H or C1-C5 alkyl respectively. The monomer can be used as a copolymerizable monomer for preparing a hyperbranched polymer applicable to oil fields, the obtained hyperbranched polymer can be used as an inhibiting filtrate reducer for drilling fluid, flocculating agent, encapsulating agent, heat-resistant and salinity-resistant polymer flooding agent, and thickening agent for fracturing liquid, etc.Type: GrantFiled: August 31, 2016Date of Patent: August 14, 2018Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, SINOPEC ZHONGYUAN OILFIELD SERVICE CORPORATION DRILLING ENGINEERING RESEARCH INSTITUTEInventor: Zhonghua Wang
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Publication number: 20160369064Abstract: A dendritic polymer, a dendritic polymer monomer, and a hyperbranched copolymer are described. The dendritic polymer monomer has a structure denoted by Z?-(Q)n-Y, wherein Z? represents a structure denoted by the following formula (a) and/or formula (b), Q represents a dendritic constitutional repeating unit of the dendritic polymer monomer, n represents the generation number of the dendritic polymer monomer, and is an integer within a range of 2-6, Y represents a group that contains SO3? and COO?, R14-R16 can be identical to or different from each other, and are H or C1-C5 alkyl respectively. The monomer can be used as a copolymerizable monomer for preparing a hyperbranched polymer applicable to oil fields, the obtained hyperbranched polymer can be used as an inhibiting filtrate reducer for drilling fluid, flocculating agent, encapsulating agent, heat-resistant and salinity-resistant polymer flooding agent, and thickening agent for fracturing liquid, etc.Type: ApplicationFiled: August 31, 2016Publication date: December 22, 2016Applicants: CHINA PETROLEUM & CHEMICAL CORPORATION, SINOPEC ZHONGYUAN OILFIELD SERVICE CORPORATION DRILLING ENGINEERING RESEARCH INSTITUTEInventor: Zhonghua Wang
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Patent number: 9475894Abstract: A dendritic polymer, a dendritic polymer monomer, and a hyperbranched copolymer are described. The dendritic polymer monomer has a structure denoted by Z?-(Q)n-Y, wherein Z? represents a structure denoted by the following formula (a) and/or formula (b), Q represents a dendritic constitutional repeating unit of the dendritic polymer monomer, n represents the generation number of the dendritic polymer monomer, and is an integer within a range of 2-6, Y represents a group that contains SO3? or COO?, R14-R16 can be identical to or different from each other, and are H or C1-C5 alkyl respectively. The monomer can be used as a copolymerizable monomer for preparing a hyperbranched polymer applicable to oil fields, the obtained hyperbranched polymer can be used as an inhibiting filtrate reducer for drilling fluid, flocculating agent, encapsulating agent, heat-resistant and salinity-resistant polymer flooding agent, and thickening agent for fracturing liquid, etc.Type: GrantFiled: June 25, 2014Date of Patent: October 25, 2016Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, SINOPEC ZHONGYUAN OILFIELD SERVICE CORPORATION DRILLING ENGINEERING RESEARCH INSTITUTEInventor: Zhonghua Wang
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Patent number: 9206342Abstract: The present invention provides a phosphonate-containing polymer and use thereof and a phosphonate-containing polymer viscosity reducer for drilling fluid. The phosphonate-containing polymer comprises structural units expressed by formula (1), structural units expressed by formula (2), and structural units expressed by formula (3) and/or structural units expressed by formula (4), wherein, the ratio of the mole number of the structural units expressed by formula (1), mole number of the structural units expressed by formula (2), and total mole number of the structural units expressed by formula (3) and structural units expressed by formula (4) is 10-85:10-75:5-55. The phosphonate-containing polymer still has outstanding viscosity reducing effect after high-temperature aging when it is applied in brine drilling fluids and high-density drilling fluids.Type: GrantFiled: September 19, 2013Date of Patent: December 8, 2015Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, SINOPEC ZHONGYUAN OILFIELD SERVICE CORPORATION DRILLING ENGINEERING RESEARCH INSTITUTEInventor: Zhonghua Wang
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Publication number: 20140080985Abstract: The present invention provides an acryloylmorpholine polymer and the use thereof and a filtrate reducer for drilling fluid. The acryloylmorpholine polymer comprises structural units expressed by formula (1), structural units expressed by formula (2), and structural units expressed by formula (3), wherein, at least a part of the structural units expressed by formula (2) can be bonded with at least a part of the structural units expressed by formula (3) into cross-linked structural unit expressed by formula (4); wherein, R1-R9 are H or C1-C3 linear or branched alkyl respectively, y is an integer within 1-5 range, M is H or an alkali metal element, X is O or NH, and R10 is C1-C5 linear or branched alkylidene. The acryloylmorpholine polymer and filtrate reducer for drilling fluid have outstanding filtrate reduction and viscosity increasing effects.Type: ApplicationFiled: September 19, 2013Publication date: March 20, 2014Applicants: SINOPEC ZHONGYUAN OILFIELD SERVICE CORPORATION DRILLING ENGINEERING RESEARCH, CHINA PETROLEUM & CHEMICAL CORPORATIONInventor: Zhonghua WANG
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Publication number: 20140080988Abstract: The present invention provides a phosphonate-containing polymer and use thereof and a phosphonate-containing polymer viscosity reducer for drilling fluid. The phosphonate-containing polymer comprises structural units expressed by formula (1), structural units expressed by formula (2), and structural units expressed by formula (3) and/or structural units expressed by formula (4), wherein, the ratio of the mole number of the structural units expressed by formula (1), mole number of the structural units expressed by formula (2), and total mole number of the structural units expressed by formula (3) and structural units expressed by formula (4) is 10-85:10-75:5-55. The phosphonate-containing polymer still has outstanding viscosity reducing effect after high-temperature aging when it is applied in brine drilling fluids and high-density drilling fluids.Type: ApplicationFiled: September 19, 2013Publication date: March 20, 2014Applicants: SINOPEC ZHONGYUAN OILFIELD SERVICE CORPORATION DRILLING ENGINEERING RESEARCH INSTITUTE, CHINA PETROLEUM & CHEMICAL CORPORATIONInventor: Zhonghua WANG