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您的检索式：作者名="VALIZADEH Majid"
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| 1 | 单乙醇胺对水基钻井液体系中淀粉热稳定性的影响显示文摘为了提高水基钻井液体系中淀粉的热稳定性,在其中添加单乙醇胺,并对其效果进行了室内实验研究。研究表明,单乙醇胺的存在使钻井液的表观黏度、塑性黏度、动切力、静切力等提高,且显著降低了钻井液的滤失速率、减小了泥饼厚度。通过与淀粉聚合物建立氢键,单乙醇胺的存在可以避免高温下淀粉的水解,提高淀粉的热稳定性。淀粉作为天然聚合物可以提高钻井液流变性能、降低滤失量,但其发挥作用的最高温度仅为121℃,而单乙醇胺会使淀粉的耐温提高至160℃。单乙醇胺存在最佳浓度,高于最佳浓度时,其功效会下降。 | NASIRI Alireza NIK Mohammad Amin Sharif HEIDARI Hamidreza VALIZADEH Majid | 2018 | 石油勘探与开发2018，45，1： | 2 |
| 2 | A one-pot and convenient synthesis of coumarins in solventless system显示文摘 | Shockravi A Valizadeh H Majid M | | 0，，： | 1 |
| 3 | Heravi, A one-pot and convenient synthesis of coumarins in solventless system显示文摘 | Abbas Shockravi Hassan Valizadeh and Majid M | 2003 | Phosphorus Sulfur and Silicon2003，178，： | 1 |
| 4 | Influence of monoethanolamine on thermal stability of starch in water based drilling fluid system显示文摘To improve the thermal stability of starch in water-based drilling fluid,monoethanolamine(MEA)was added,and the effect was investigated by laboratory experiment.The experimental results show that the addition of monoethanolamine(MEA)increases the apparent viscosity,plastic viscosity,dynamic shear force,and static shear force of the drilling fluid,and reduces the filtration rate of drilling fluid and thickness of mud cake apparently.By creating hydrogen bonds with starch polymer,the monoethanolamine can prevent hydrolysis of starch at high temperature.Starch,as a natural polymer,is able to improve the rheological properties and reduce filtration of drilling fluid,but it works only below 121℃.The MEA will increase the thermal stability of starch up to 160℃.There is a optimum concentration of MEA,when higher than this concentration,its effect declines. | NASIRI Alireza AMERI SHAHRABI Mohammad Javad SHARIF NIK Mohammad Amin HEIDARI Hamidreza VALIZADEH Majid | 2018 | Petroleum Exploration and Development2018，45，1： | 0 |
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