一种高温凝胶调剖剂成胶性能的影响因素
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摘要
为了提高凝胶调剖剂的耐温性能,以聚丙烯酰胺为主剂,以多元络合铬(Ⅲ)金属为交联剂,研制了一种高温凝胶调剖体系。在凝胶调剖体系成胶机理研究的基础上,详细研究了交联剂质量分数、稳定剂质量分数、温度、p H值和矿化度等因素对凝胶体系黏度的影响,并进行了室内岩心封堵实验。结果表明:该凝胶体系具有较好的耐温性能,聚丙烯酰胺和三价铬离子能够形成具有三维空间立体网状结构的凝胶体系;当温度升高时,分子链运动加快,发生卷曲收缩,并抑制聚丙烯酰胺分子链的构象变化,同时分子链的收缩也受到一定的限制,分子链尺寸在一定程度上得以保留;当聚丙烯酰胺质量浓度为3 000 mg/L、交联剂质量分数为0. 4%、稳定剂质量分数为0. 4%、p H值为9. 0、温度为106℃、矿化度为30 000 mg/L时,凝胶体系的黏度可达7 120 m Pa·s;同时,该凝胶体系对不同渗透率的岩心均具有较好的封堵性,封堵率达98. 57%以上。
In order to enhance the temperature-resistance performance of the gel profile-controlling agent,taking the polyacrylamide as the main agent and the multiple complex chromium( Ⅲ) metal as the cross-linking agent,one kind of high-temperature gel profile-controlling system was developed. On the bases of the research on the gelling mechanism of the gel profile-controlling system,the influences of the cross-linking-agent and stabilizing-agent mass fractors,temperature,pH value,salinity and so forth on the viscosity of the gel system were researched in detail,and moreover the indoor core plugging experiment was conducted. The results show that the gel system possesses much better temperature-resistance performance,the HPAM and trivalent chromic ion can form the gel system with three-dimensional space mesh structures; when the temperature increases,the molecular chains move faster and crimp contraction,and furthermore inhibit the conformational changes of the polyacrylamide chains,limit the contraction of the molecular chains and moreover the molecular chain size can be preserved in some extent; when the HPAM mass concentration is 3 000 mg/L,the cross-linking-agent mass fractor is 0. 3%,the stabilizing-agent mass fractor is 0. 4%,the pH value is 9. 0,the temperature is 106 ℃ and the salinity is 30 000 mg/L,the viscos-ity of the gel system can reach up to 7 120 m Pa·s. At the same time,the gel system possesses much better plugging performance for the cores with different permeabilities,and the block rate is over 98. 57%.
In order to enhance the temperature-resistance performance of the gel profile-controlling agent,taking the polyacrylamide as the main agent and the multiple complex chromium( Ⅲ) metal as the cross-linking agent,one kind of high-temperature gel profile-controlling system was developed. On the bases of the research on the gelling mechanism of the gel profile-controlling system,the influences of the cross-linking-agent and stabilizing-agent mass fractors,temperature,pH value,salinity and so forth on the viscosity of the gel system were researched in detail,and moreover the indoor core plugging experiment was conducted. The results show that the gel system possesses much better temperature-resistance performance,the HPAM and trivalent chromic ion can form the gel system with three-dimensional space mesh structures; when the temperature increases,the molecular chains move faster and crimp contraction,and furthermore inhibit the conformational changes of the polyacrylamide chains,limit the contraction of the molecular chains and moreover the molecular chain size can be preserved in some extent; when the HPAM mass concentration is 3 000 mg/L,the cross-linking-agent mass fractor is 0. 3%,the stabilizing-agent mass fractor is 0. 4%,the pH value is 9. 0,the temperature is 106 ℃ and the salinity is 30 000 mg/L,the viscos-ity of the gel system can reach up to 7 120 m Pa·s. At the same time,the gel system possesses much better plugging performance for the cores with different permeabilities,and the block rate is over 98. 57%.
引文
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[19]史雪冬,岳湘安,张俊斌,等.聚驱后油藏井网调整与深部调剖三维物理模拟实验[J].断块油气田,2017,24(3):401-404.
[20]史树彬,靳彦欣,衣哲,等.特高含水期差异化深部调剖技术研究[J].石油地质与工程,2017,31(1):100-103.
[21]史胜龙,王业飞,周代余,等.微泡沫体系的制备及在调剖、驱油中的应用进展[J].油田化学, 2016, 33(4):750-755.
[22]王嘉晨,侯吉瑞,赵凤兰,等.非均质岩心调堵结合技术室内实验[J].油气地质与采收率,2014,21(6):99-101.
[23]王苹,戴彩丽,由庆,等.抗剪切耐盐无机铝凝胶深部调剖剂研究[J].油气地质与采收率,2013,20(6):100-103.
[24]赵修太,陈泽华,陈文雪,等.颗粒类调剖堵水剂的研究现状与发展趋势[J].石油钻采工艺, 2015, 37(4):105-112.
[25]胡绍彬,王鹏,王哲,等.耐温抗盐凝胶调剖剂研究进展[J].当代化工,2015,44(2):263-267.
[26]黄德胜,齐宁,姜慧,等.高温油藏深部复合调剖技术研究[J].西安石油大学学报(自然科学版),2014,29(3):68-72.
[2]张贵清,汤发明,王宇宾,等.新型深部调剖剂研究与应用[J].天津科技,2013,40(5):39-42.
[3]李强,梁守成,吕鑫,等.交联聚合物溶液成胶动态特征及其机理[J].大庆石油地质与开发,2017,36(4):87-94.
[4]卿华,宋茹娥,杨海涛,等.强碱三元复合驱后提高采收率影响因素[J].大庆石油地质与开发, 2017, 36(4):106-111.
[5]苟绍华,封明明,叶仲斌,等.丙烯酰胺-双丙酮丙烯酰胺自交联聚合物凝胶的研究[J].油田化学, 2013, 30(3):366-370.
[6]王业飞,何龙,崔志昆,等.聚合物驱后深部调剖提高采收率的实验研究[J].油田化学,2005,22(4):349-353.
[7] Ahmad Moradi-Araghi. A review of thermally stable gels for fluid diversion in petroleum production[J]. Journal of Petroleum Science and Engineering,2000,26(1-4):1-10.
[8] Zhu Daoyi,Hou Jirui,Meng Xianxing,et al. Effect of Different Phenolic Compounds on Performance of Organically Cross-Linked Terpolymer Gel Systems at Extremely High Temperatures[J]. Energy&Fuels,2017,31(8):8120-8130.
[9] Zhou Zhijun,Zhao Jianbo,Zhou Tong,et al. Study on in-depth profile control system of low-permeability reservoir in block H of Daqing oil field[J]. Journal of Petroleum Science and Engineering,2017,157(1):1192-1196.
[10]赵晓非,于庆龙,杨长青,等.有机铬弱凝胶深部调剖体系的研究与性能评价[J].特种油气藏,2013,20(3):114-117.
[11]胡世平,谢志平,贾静,等.三乙醇胺铝对水解聚丙烯酰胺交联性能的影响[J].石油化工,2018,47(3):281-285.
[12] Zhu Daoyi,Hou Jirui,Wei Qi,et al. Terpolymer Gel System Formed by Resorcinol-Hexamethylenetetramine for Water Management in Extremely High-Temperature Reservoirs[J]. Energy&Fuels,2017,31(2):1519-1528.
[13] Ma Liping,Wang Shitou,Long Yifu,et al. Novel Environmentally Benign Hydrogel:Nano-Silica Hybrid Hydrolyzed Polyacrylamide/Polyethyleneimine Gel System for Conformance Improvement in High Temperature High Salinity Reservoir[J]. Society of Petroleum Engineers,SPE-188654-MS,2017.
[14]闫霜,高玉军,徐黎刚,等.一种聚合物弱凝胶深部调剖剂的研究[J].应用化工,2014,43(5):905-908.
[15]谢晓庆,冯国智,刘立伟,等.海上油田聚合物驱后提高采收率技术[J].油气地质与采收率,2015,22(1):93-97.
[16]杨森,许关利,刘平,等.稠油化学降黏复合驱提高采收率实验研究[J].油气地质与采收率,2018,25(5):80-87.
[17]于龙,李亚军,宫厚健,等.非均质油层聚合物驱后黏弹性支化预交联凝胶颗粒驱提高采收率技术[J].油气地质与采收率,2016,23(1):113-118.
[18]王晓燕,郭程飞,杨涛,等.低渗透裂缝性油藏调剖物理模型研制及实验评价[J].油田化学, 2017, 34(2):265-269.
[19]史雪冬,岳湘安,张俊斌,等.聚驱后油藏井网调整与深部调剖三维物理模拟实验[J].断块油气田,2017,24(3):401-404.
[20]史树彬,靳彦欣,衣哲,等.特高含水期差异化深部调剖技术研究[J].石油地质与工程,2017,31(1):100-103.
[21]史胜龙,王业飞,周代余,等.微泡沫体系的制备及在调剖、驱油中的应用进展[J].油田化学, 2016, 33(4):750-755.
[22]王嘉晨,侯吉瑞,赵凤兰,等.非均质岩心调堵结合技术室内实验[J].油气地质与采收率,2014,21(6):99-101.
[23]王苹,戴彩丽,由庆,等.抗剪切耐盐无机铝凝胶深部调剖剂研究[J].油气地质与采收率,2013,20(6):100-103.
[24]赵修太,陈泽华,陈文雪,等.颗粒类调剖堵水剂的研究现状与发展趋势[J].石油钻采工艺, 2015, 37(4):105-112.
[25]胡绍彬,王鹏,王哲,等.耐温抗盐凝胶调剖剂研究进展[J].当代化工,2015,44(2):263-267.
[26]黄德胜,齐宁,姜慧,等.高温油藏深部复合调剖技术研究[J].西安石油大学学报(自然科学版),2014,29(3):68-72.