一种抗高温抗钙两性离子聚合物分散剂
|
摘要
针对聚合物钻井液的抗钙难题,以分散解絮凝为主要思路,使用2-丙烯酰胺基-2-甲基丙磺酸(AMPS)、对苯乙烯基磺酸钠(SSS)和二甲基二烯丙基氯化铵(DMDAAC)为单体合成了一种抗高温抗钙两性离子聚合物分散剂。对影响聚合反应的关键参数进行了优选,最终将单体物质的量比优选为AMPS∶SSS∶DMDAAC=7.5∶0.5∶2,引发剂K2S2O8加量优选为单体总质量的0.4%。单剂评价结果表明,分散剂能够在高钙且高温的环境中有效分散膨润土,具有降低滤失量与低剪切速率黏度的作用。从分散剂的分子构型入手分析了其作用机理。以分散剂为核心,配伍消泡剂与惰性封堵材料,配制了高钙钻井液。
Calcium contamination presents threats to many polymers used in drilling fluids. Dispersion and deflocculation are generally used to eliminate the detrimental effects of calcium contamination. A high temperature calcium resistant amphoteric polymer dispersant has been developed with 2-acrylamido-2-methylpropane sulfonic acid(AMPS), sodium 4-styrenesulfonate(SSS) and dimethyldiallyl ammonium chloride(DMDAAC). The key factors affecting the polymerization, through optimization, are as follows: molar ratio of the monomers AMPS∶SSS∶DMDAAC=7.5∶0.5∶2, percent mass concentration of the initiator K_2S_2O_8 is 0.4%. Laboratory evaluation results show that this dispersant can be used to disperse bentonite in high temperature high calcium water base drilling fluids, and is able to reduce filtration rate and low-shear-rate viscosity. The mechanism of the dispersant was studied by analyzing its molecular structure.A drilling fluid resistant to contamination of high concentration calcium was formulated with the dispersant as the main additive,combined with other additives such as defoamer and inert plugging agents.
Calcium contamination presents threats to many polymers used in drilling fluids. Dispersion and deflocculation are generally used to eliminate the detrimental effects of calcium contamination. A high temperature calcium resistant amphoteric polymer dispersant has been developed with 2-acrylamido-2-methylpropane sulfonic acid(AMPS), sodium 4-styrenesulfonate(SSS) and dimethyldiallyl ammonium chloride(DMDAAC). The key factors affecting the polymerization, through optimization, are as follows: molar ratio of the monomers AMPS∶SSS∶DMDAAC=7.5∶0.5∶2, percent mass concentration of the initiator K_2S_2O_8 is 0.4%. Laboratory evaluation results show that this dispersant can be used to disperse bentonite in high temperature high calcium water base drilling fluids, and is able to reduce filtration rate and low-shear-rate viscosity. The mechanism of the dispersant was studied by analyzing its molecular structure.A drilling fluid resistant to contamination of high concentration calcium was formulated with the dispersant as the main additive,combined with other additives such as defoamer and inert plugging agents.
引文
[1]王树永,赵小平,吕本正,等.一种低土相高密度抗钙钻井液体系[J].钻井液与完井液,2016,33(5):41-44.WANG Shuyong,ZHAO Xiaoping,LYU Benzheng,et al.A calcium tolerant high density low clay drilling fluid[J].Drilling Fluid&Completion Fluid,2016,33(5):41-44.
[2]林俊宇.抗盐钙水基钻井液室内研究[J].西部探矿工程,2016,4:76-78.LIN Junyu.Laboratory research on sodium and calcium tolerant water base drilling fluid[J].West-China Exploration Engineering,2016,4:76-78.
[3]郑玉辉,蒋振伟,凡帆.硝酸钙胺基聚合物钻井液技术[J].钻井液与完井液,2016,33(2):50-54.ZHENG Yuhui,JIANG Zhenwei,FAN Fan.Calcium nitrate treated polyamine drilling fluid technology[J].Drilling Fluid&Completion Fluid,2016,33(2):50-54.
[4]陶怀志.抗高温抗盐钙水基钻井液降滤失剂合成、表征与作用机理研究[D].西南石油大学,2012.TAO Huaizhi.Researches on synthesis properties and mechanism of high temperature resistant and sodium/calcium tolerant filtrate reducer for water-based drilling fluid[D].Southwest Petroleum University,2012.
[5]王岩,孙金声,黄贤斌,等.抗高温耐盐钙五元共聚物降滤失剂的合成与性能[J].钻井液与完井液,2018,35(2):23-28.WANG Yan,SUN Jinsheng,HUANG Xianbin,et al.Synthesis and properties of a high temperature calcium and salt resistant quinary copolymer filter loss reducer[J].Drilling Fluid&Completion Fluid,2018,35(2):23-28.
[6]蒋官澄,刘凡,任妍君,等.抗高温抗高钙降滤失剂DF-1的研制与评价[J].油田化学,2015,32(1):1-6.JIANG Guancheng,LIU Fan,REN Yanjun,et al.Synthesis and evaluation of high temperature resistant and high calcium tolerant filtrate loss additive DF-1[J].Oilfield Chemistry,2015,32(1):1-6.
[7]刘秀军,张玉红,薛新生,等.XSM抗盐抗钙水泥浆体系研究[J].钻井液与完井液,1999,15(5):25-27.LIU Xiujun,ZHANG Yuhong,XUE Xinsheng,et al.A cement slurry system free of salt and calcium contamination[J].Drilling Fluid&Completion Fluid,1999,15(5):25-27.
[8]徐运波,蓝强,张斌,等.梳型聚合物降滤失剂的合成及其在深井盐水钻井液中的应用[J].钻井液与完井液,2017,34(1):33-38.XU Yunbo,LAN Qiang,ZHANG Bin,et al.Synthesis and application of a comb polymer filter loss reducer in deep well saltwater drilling fluid[J].Drilling Fluid&Completion Fluid,2017,34(1):33-38.
[9]何剑,杨小华,王琳,等.抗高温抗钙水溶性聚合物降滤失剂研究进展[J].中外能源,2016,21:32-37.HE Jian,YANG Xiaohua,WANGLin,etal.Research progress of water-soluble polymeric filtrate reducer with high-temperature resistance and calcium tolerance[J].Sino-Global Energy,2016,21:32-37.
[10]马诚,甄剑武,王中华,等.氯化钙无土相钻井液降滤失剂SPH-F的合成与评价[J].钻井液与完井液,2014,31(1):1-3.MA Cheng,ZHEN Jianwu,WANG Zhonghua,et al.Synthesis and evaluation of filtrate reducer SPH-F for calcium chloride clay-free drilling fluids[J].Drilling Fluid&Completion Fluid,2014,31(1):1-3.
[11]RANKA M,BROWN P,HATTON T A.Responsive stabilization of nanoparticles for extreme salinity and high-temperature reservoir applications[J].ACSApplied Materials&Interfaces,2015,7(35):19651-19658.
[12]谢建宇,李彬,张滨.超高密度钻井液分散剂的合成及性能评价[J].钻井液与完井液,2013,30(3):4-6.XIE Jianyu,LI Bin,ZHANG Bin.Synthesis and performances evaluation on dispersant of ultra-high density drilling fluid system[J].Drilling Fluid&Completion Fluid,2013,30(3):4-6.
[2]林俊宇.抗盐钙水基钻井液室内研究[J].西部探矿工程,2016,4:76-78.LIN Junyu.Laboratory research on sodium and calcium tolerant water base drilling fluid[J].West-China Exploration Engineering,2016,4:76-78.
[3]郑玉辉,蒋振伟,凡帆.硝酸钙胺基聚合物钻井液技术[J].钻井液与完井液,2016,33(2):50-54.ZHENG Yuhui,JIANG Zhenwei,FAN Fan.Calcium nitrate treated polyamine drilling fluid technology[J].Drilling Fluid&Completion Fluid,2016,33(2):50-54.
[4]陶怀志.抗高温抗盐钙水基钻井液降滤失剂合成、表征与作用机理研究[D].西南石油大学,2012.TAO Huaizhi.Researches on synthesis properties and mechanism of high temperature resistant and sodium/calcium tolerant filtrate reducer for water-based drilling fluid[D].Southwest Petroleum University,2012.
[5]王岩,孙金声,黄贤斌,等.抗高温耐盐钙五元共聚物降滤失剂的合成与性能[J].钻井液与完井液,2018,35(2):23-28.WANG Yan,SUN Jinsheng,HUANG Xianbin,et al.Synthesis and properties of a high temperature calcium and salt resistant quinary copolymer filter loss reducer[J].Drilling Fluid&Completion Fluid,2018,35(2):23-28.
[6]蒋官澄,刘凡,任妍君,等.抗高温抗高钙降滤失剂DF-1的研制与评价[J].油田化学,2015,32(1):1-6.JIANG Guancheng,LIU Fan,REN Yanjun,et al.Synthesis and evaluation of high temperature resistant and high calcium tolerant filtrate loss additive DF-1[J].Oilfield Chemistry,2015,32(1):1-6.
[7]刘秀军,张玉红,薛新生,等.XSM抗盐抗钙水泥浆体系研究[J].钻井液与完井液,1999,15(5):25-27.LIU Xiujun,ZHANG Yuhong,XUE Xinsheng,et al.A cement slurry system free of salt and calcium contamination[J].Drilling Fluid&Completion Fluid,1999,15(5):25-27.
[8]徐运波,蓝强,张斌,等.梳型聚合物降滤失剂的合成及其在深井盐水钻井液中的应用[J].钻井液与完井液,2017,34(1):33-38.XU Yunbo,LAN Qiang,ZHANG Bin,et al.Synthesis and application of a comb polymer filter loss reducer in deep well saltwater drilling fluid[J].Drilling Fluid&Completion Fluid,2017,34(1):33-38.
[9]何剑,杨小华,王琳,等.抗高温抗钙水溶性聚合物降滤失剂研究进展[J].中外能源,2016,21:32-37.HE Jian,YANG Xiaohua,WANGLin,etal.Research progress of water-soluble polymeric filtrate reducer with high-temperature resistance and calcium tolerance[J].Sino-Global Energy,2016,21:32-37.
[10]马诚,甄剑武,王中华,等.氯化钙无土相钻井液降滤失剂SPH-F的合成与评价[J].钻井液与完井液,2014,31(1):1-3.MA Cheng,ZHEN Jianwu,WANG Zhonghua,et al.Synthesis and evaluation of filtrate reducer SPH-F for calcium chloride clay-free drilling fluids[J].Drilling Fluid&Completion Fluid,2014,31(1):1-3.
[11]RANKA M,BROWN P,HATTON T A.Responsive stabilization of nanoparticles for extreme salinity and high-temperature reservoir applications[J].ACSApplied Materials&Interfaces,2015,7(35):19651-19658.
[12]谢建宇,李彬,张滨.超高密度钻井液分散剂的合成及性能评价[J].钻井液与完井液,2013,30(3):4-6.XIE Jianyu,LI Bin,ZHANG Bin.Synthesis and performances evaluation on dispersant of ultra-high density drilling fluid system[J].Drilling Fluid&Completion Fluid,2013,30(3):4-6.