A new polymer system, referred to simply as the AP-P4 polymer system, aims at solving the problems of high temperature, high salinity and the poor shearing resistance, all of which are encountered by conventional ...A new polymer system, referred to simply as the AP-P4 polymer system, aims at solving the problems of high temperature, high salinity and the poor shearing resistance, all of which are encountered by conventional polymers (such as polyacrylamide) used in profile control, profile performance improvement and EOR operations in the Zhongyuan Oilfield, Sinopec. This system has been developed on the basis of the specific molecular structure and the better properties of high temperature resistance, high salinity resistance and strong shearing resistance of the new type of AP-P4 association polymer. Acidity modifying agents and cross-linking agents (MZ-YL, MZ-BE, MZ-XS), compatible with the new polymer system, are selected. Results of performance tests have shown that the new polymer system has excellent thickening, high temperature, high salinity and shearing resistance and anti-dehydrating properties. In 2003, it underwent its first pilot test in 26 wells in China, with remarkable effects in increasing oil production and decreasing water production. The newly developed polymer system and its application technology described in this paper may play a guiding role in polymer profile control operations in the oil reservoirs of high temperature and high salinity.展开更多
为了提升驱油用聚合物在苛刻油藏环境中的耐温与抗盐性,设计合成了一种以多元胺-丙烯酸甲酯为聚合前体,具有超支化结构的聚酰胺-胺类单体,并在此基础上合成了一种长效抗剪切聚合物(LSRP)。考查了聚合单体浓度、引发温度、聚合时间、引...为了提升驱油用聚合物在苛刻油藏环境中的耐温与抗盐性,设计合成了一种以多元胺-丙烯酸甲酯为聚合前体,具有超支化结构的聚酰胺-胺类单体,并在此基础上合成了一种长效抗剪切聚合物(LSRP)。考查了聚合单体浓度、引发温度、聚合时间、引发剂组成和加量及水解度等因素对LSRP溶液黏度的影响,采用FTIR和1HNMR表征了单体及聚合物结构,对聚合物增黏、抗剪切、抗盐、注入性及驱油性能进行了评价。结果表明:聚合物LSRP具有较好的增黏能力、抗剪切性和稳定性,当原油黏度70~300 m Pa·s时,室内驱油实验采收率较水驱增加20%以上,矿场试验注入后期压力平稳上升。展开更多
在中低渗透高温高盐油藏聚合物驱技术中,超高相对分子质量聚丙烯酰胺(HPAM)存在不易注入、剪切降粘显著和耐温抗盐性能差等问题。本文以丙烯酰胺(AM)和2-丙烯酰胺基-2-甲基丙磺酸(AMPS)为单体,采用过硫酸胺(NH4)2S2O8和甲基丙烯酸N,N-...在中低渗透高温高盐油藏聚合物驱技术中,超高相对分子质量聚丙烯酰胺(HPAM)存在不易注入、剪切降粘显著和耐温抗盐性能差等问题。本文以丙烯酰胺(AM)和2-丙烯酰胺基-2-甲基丙磺酸(AMPS)为单体,采用过硫酸胺(NH4)2S2O8和甲基丙烯酸N,N-二甲氨基乙酯(DMAEMA)作为支化结构复合引发体系,通过共聚后水解工艺,合成含支化结构耐温抗盐驱油共聚物P(AM/AMPSNa/AANa)。研究了引发温度、链转移剂用量、引发剂用量对共聚物特性黏数的影响,并通过红外光谱(IR)和13C NMR表征了产物结构。筛选特性黏数1915 m L/g左右的共聚物,进行性能评价。实验结果表明,共聚物具有优异的耐温抗盐性能、抗剪切性能、抗老化性、注入性和驱油性能,可应用在中低渗透高温高盐油藏三次采油中。展开更多
文摘A new polymer system, referred to simply as the AP-P4 polymer system, aims at solving the problems of high temperature, high salinity and the poor shearing resistance, all of which are encountered by conventional polymers (such as polyacrylamide) used in profile control, profile performance improvement and EOR operations in the Zhongyuan Oilfield, Sinopec. This system has been developed on the basis of the specific molecular structure and the better properties of high temperature resistance, high salinity resistance and strong shearing resistance of the new type of AP-P4 association polymer. Acidity modifying agents and cross-linking agents (MZ-YL, MZ-BE, MZ-XS), compatible with the new polymer system, are selected. Results of performance tests have shown that the new polymer system has excellent thickening, high temperature, high salinity and shearing resistance and anti-dehydrating properties. In 2003, it underwent its first pilot test in 26 wells in China, with remarkable effects in increasing oil production and decreasing water production. The newly developed polymer system and its application technology described in this paper may play a guiding role in polymer profile control operations in the oil reservoirs of high temperature and high salinity.
文摘为了提升驱油用聚合物在苛刻油藏环境中的耐温与抗盐性,设计合成了一种以多元胺-丙烯酸甲酯为聚合前体,具有超支化结构的聚酰胺-胺类单体,并在此基础上合成了一种长效抗剪切聚合物(LSRP)。考查了聚合单体浓度、引发温度、聚合时间、引发剂组成和加量及水解度等因素对LSRP溶液黏度的影响,采用FTIR和1HNMR表征了单体及聚合物结构,对聚合物增黏、抗剪切、抗盐、注入性及驱油性能进行了评价。结果表明:聚合物LSRP具有较好的增黏能力、抗剪切性和稳定性,当原油黏度70~300 m Pa·s时,室内驱油实验采收率较水驱增加20%以上,矿场试验注入后期压力平稳上升。
文摘在中低渗透高温高盐油藏聚合物驱技术中,超高相对分子质量聚丙烯酰胺(HPAM)存在不易注入、剪切降粘显著和耐温抗盐性能差等问题。本文以丙烯酰胺(AM)和2-丙烯酰胺基-2-甲基丙磺酸(AMPS)为单体,采用过硫酸胺(NH4)2S2O8和甲基丙烯酸N,N-二甲氨基乙酯(DMAEMA)作为支化结构复合引发体系,通过共聚后水解工艺,合成含支化结构耐温抗盐驱油共聚物P(AM/AMPSNa/AANa)。研究了引发温度、链转移剂用量、引发剂用量对共聚物特性黏数的影响,并通过红外光谱(IR)和13C NMR表征了产物结构。筛选特性黏数1915 m L/g左右的共聚物,进行性能评价。实验结果表明,共聚物具有优异的耐温抗盐性能、抗剪切性能、抗老化性、注入性和驱油性能,可应用在中低渗透高温高盐油藏三次采油中。