| 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。 |
| 关键词: 油基钻井液 流变性调控剂 流变性能 乳化剂 乳液稳定 |
| DOI：10.3969/j.issn.1673-5005.2019.03.013 |
| 分类号::TE 254 |
| 文献标识码:A |
| 基金项目:山东省重点研发计划项目(2018GSF116008);国家科技重大专项“十三五”课题(2016ZX05040-005) |
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| Synthesis and mechanism of amide rheological regulator |
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GENG Tie1,2, QIU Zhengsong1, LEI Ming1, ZHANG Wei2, WANG Jingwen1, HUANG Weian1
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(1.School of Petroleum Engineering in China University of Petroleum East China , Qingdao 266580, China;2.China Oilfield Services Limited, Sanhe 065201, China)
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| Abstract: |
| 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. |
| Key words: oil-based drilling fluid rheological regulator rheological property emulsifier emulsion stability |
