酰胺基流变性调控剂研制及其作用机制
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摘要
基于分子结构优化设计,研制两种酰胺基流变性调控剂Amide-1和Amide-2,与普通流变性调控剂对比考察其提切效果,并通过乳液液滴粒径和流变性测试,探讨其与乳化剂作用机制。结果表明:Amide-1和Amide-2对有机土/白油分散体系的塑性黏度影响较小,提高切力效果明显,随温度升高切力降低程度小;该流变性调控剂对乳液液滴粒径影响小,有利于乳液稳定,优化乳化剂复配可使粒径变化率由52.2%降低至14%,并能将乳化剂/有机土分散体系低剪切速率下的黏度降低率由50%减至14.1%,高剪切速率下黏度维持在5 mPa·s,从而有效提高体系结构强度;与乳化剂协同作用使乳液液滴平均粒径变化小,对体系黏度影响小。
Two amide rheological regulators named Amide-1 and Amide-2 were developed based on the optimum design of molecular structure. The effects were investigated compared with various common rheological regulators.And the interaction mechanism between developed amide rheological regulators and emulsifiers was investigated through emulsion particle size and rheological properties.It is found that the Amide-1 and Amide-2 show little influence on plastic viscosity of the organic soil/white oil dispersion system. However, they can significantly increase the yield point. As temperature increases, the yield point reduces slowly. And the amide rheological regulators present small effect on emulsion droplets size, which is good for the stability of emulsion. And the compound emulsifiers can reduce the rate of particle size from 52.2% to 14%.Moreover, in the dispersing system of different emulsifiers/organic soil, the rheological regulator can decrease the viscosity reduction rate from 50% down to 14% at a low shear rate range. Meanwhile, the viscosity maintains at 5 mPa·s at a high shear rate in this organic soil system, which thereby effectively improves the structural strength. The synergistic effects of regulator and emulsifier reduce the change of the average particle size of the emulsion droplets, and show slight influence on the viscosity of the system.
Two amide rheological regulators named Amide-1 and Amide-2 were developed based on the optimum design of molecular structure. The effects were investigated compared with various common rheological regulators.And the interaction mechanism between developed amide rheological regulators and emulsifiers was investigated through emulsion particle size and rheological properties.It is found that the Amide-1 and Amide-2 show little influence on plastic viscosity of the organic soil/white oil dispersion system. However, they can significantly increase the yield point. As temperature increases, the yield point reduces slowly. And the amide rheological regulators present small effect on emulsion droplets size, which is good for the stability of emulsion. And the compound emulsifiers can reduce the rate of particle size from 52.2% to 14%.Moreover, in the dispersing system of different emulsifiers/organic soil, the rheological regulator can decrease the viscosity reduction rate from 50% down to 14% at a low shear rate range. Meanwhile, the viscosity maintains at 5 mPa·s at a high shear rate in this organic soil system, which thereby effectively improves the structural strength. The synergistic effects of regulator and emulsifier reduce the change of the average particle size of the emulsion droplets, and show slight influence on the viscosity of the system.
引文
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[2] 王中华.国内外油基钻井液研究与应用进展[J].断块油气田,2011,18(4):533-537.WANG Zhonghua.Research and application progress of oil-based drilling fluid at home and abroad[J].Fault-Block Oil & Gas Field,2011,18(4):533-537.
[3] ARSLANBEKOV A,SEVODIN N,VALUEV D,et al.Application and optimization of oil-based drilling fluids for ERD wells Ynao Area (Russian)[R].SPE 136310,2010.
[4] 冯萍,邱正松,曹杰,等.国外油基钻井液提切剂的研究与应用进展[J].钻井液与完井液,2012,29(5):84-88.FENG Ping,QIU Zhengsong,CAO Jie,et al.Progress on study and application on rheology modifier for oil-based mud aboard[J].Drilling Fluid & Completion Fluid,2012,29(5):84-88.
[5] 王显光,李雄,林永学.页岩水平井用高性能油基钻井液研究与应用[J].石油钻探技术,2013,41(2):17-22.WANG Xianguang,LI Xiong,LIN Yongxue.Research and application of high performance oil base drilling fluid for shale horizontal wells[J].Petroluem Drilling Techniques,2013,41(2):17-22.
[6] BASTIDAS H A N,PEREZ J S C,CASTELLANOS C V.Development of an environmentally friendly oil based drilling fluid using castor oil with polar activator and in presence of strong bases lime[R].SPE 185451-MS,2017.
[7] 冯萍,邱正松,曹杰,等.提切剂对合成基钻井液流变性的影响[J].中国石油大学学报(自然科学版),2012,36(6):172-186.FENG Ping,QIU Zhengsong,CAO Jie,et al.Effects of rheological modifiers on rheological characteristics of synthetic base drilling fluid[J].Journal of China University of Petroleum(Edition of Natural Science),2012,36(6):172-186.
[8] 李美蓉,黄漫,曲彩霞,等.疏水缔合型和非疏水缔合型驱油聚合物的结构与溶液特征[J].中国石油大学学报(自然科学版),2013,37(3):167-171.LI Meirong,HUANG Man,QU Caixia,et al.Structure and solution properties for HPAM and AHPAM used in oil displacement polymer[J].Journal of China University of Petroleum(Edition of Natural Science),2013,37(3):167-171.
[9] 张现斌,赵冲,王伟忠,等.矿物油基钻井液低剪切流变行为调节技术研究[J].中国石油勘探,2015,20(4):63-70.ZHANG Xianbin,ZHAO Chong,WANG Weizhong,et al.Technologies to modify low-shear rate rheology behaviors of mineral oil based drilling fluids[J].China Petroleum Exploration,2015,20(4):63-70.
[10] 李舟军,王显光,王松.一种油基钻井液用支化型流变性调控剂及其应用[J].长江大学学报(自然科学版),2018,15(7):53-57.LI Zhoujun,WANG Xianguang,WANG Song.A branched flow pattern regulator for oil-based drilling fluid and its application[J].Journal of Yangtze University (Natural Science Edition),2018,15(7):53-57.
[11] SHAHBAZI K,MEHTA S,MOORE R,et al.Oxidation as a rheology modifier and a potential cause of explosions in oil and synthetic-based drilling fluids[R].SPE 105935,2007.
[12] 史赫.油基钻井液用流变性调控剂的研制[D].北京:中国石油大学(北京),2016.SHI He.The development of flow pattern regulator for oil based drilling fluids[D].Beijing:China University of Petroleum(Beijing),2016.
[13] JAMES R W,NAVESTAD P,SCHEI T,et al.Improving the working environment and drilling economics through better understanding of oil based drilling fluid chemistry[J].SPE Drilling & Completion,2000,15(4):254-260.
[14] HILFIGER M G,THAEMLITZ C J,MOELLENDICK E.Investigating the chemical nature of flat rheology[R].SPE 180320-MS,2016.
[15] 米远祝,罗跃,李建成,等.油基钻井液聚合物增黏剂的合成及性能研究[J].钻井液与完井液,2013,30(2):6-9.MI Yuanzhu,LUO Yue,LI Jiancheng,et al.Synthesis and performance evaluation of polymer viscosifier for oil-based drilling fluid[J].Drilling Fluid & Completion Fluid,2013,30(2):6-9.
[16] MAGHRABI S S,MILLER J J,SHUMWAY W W,et al.Suspension characteristics in invert emulsions:US8691733B2[P].2014-04-08.
[17] DINO D,THOMPSON J,GEURTSEN R.Thermally stable compositions and use thereof in drilling fluids:US20100009873A1[P].2010-01-14.
[18] 周金位.油基钻井液用流变性调控剂的研制及性能研究[D].成都:西南石油大学,2015.ZHOU Jinwei.Development and performance study of flow regulators for oil-based drilling fluid[D].Chengdu:Southwest Petroleum University,2015.
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