羟基亚乙基二膦酸四钠对二元驱油体系性能的影响  

Effect of tetrasodium 1-hydroxy ethylidene-1,1-diphosphonate on performance of binary oil-displacing system

作　　者：郭黎明[1] 

机构地区：[1]中国石油化工股份有限公司胜利油田分公司采油工艺研究院,山东东营257000

出　　处：《日用化学工业》2013年第1期38-42,共5页China Surfactant Detergent & Cosmetics

基　　金：国家自然科学基金资助项目(20873181);山东省自然科学基金资助项目(Y2008F20)

摘　　要：针对适用于孤东六区稠油冷采条件的无碱超低界面张力两亲聚合物强化泡沫驱油体系,通过电导率、界面张力及黏度等手段研究了羟基亚乙基二膦酸四钠(HEDP-Na4)对石油磺酸盐/两亲聚合物体系界面张力及黏度的影响。实验结果表明,HEDP-Na4一方面能够通过盐效应调节石油磺酸盐的亲水亲油平衡,促进石油磺酸盐在油/水界面上的吸附,另一方面能够鳌合溶液中的Ca2+和Mg2+,减小高价金属离子对石油磺酸盐和Ⅰ型两亲聚合物的影响,从而使得体系界面张力大幅降低和黏度小幅升高;并且HEDP-Na4对石油磺酸盐与Ⅰ型两亲聚合物之间的相互作用影响不大。With respect to the alkali - free ultra - low - interfacial - tension - amphiphilic - polymer - enhanced foam system applicable to the dense oil cold recovery conditions of the sixth region of Gudong Oilfield, effect of tetrasodium 1 - hydroxy ethylidene - 1,1 - diphosphonate （ HEDP - Na4 ） on the interfacial tension and viscosity of the petroleum sulfonate/amphiphilic polymer system was studied through conductivity, interfacial tension and viscosity measurement. Experimental results indicated that, the HEDP - Na4 can adjust the hydrophile hpophile balance of petroleum sulfonate by salt effect to promote adsorption of petroleum sulfonate onto oil/H2O interface. Further, it can reduce the influence of high electrovalent metal ions on the petroleum sulfonate and amphiphilic polymer by chelating the Ca2＋ and Mg2＋in solution, so the interfacial tension can be significantly reduced and the viscosity can be increased within a small range. Effect of HEDP - Na4 on the interaction between petroleum sulfonate and amphiphilic polymer is not big.

关 键 词：石油磺酸盐 羟基亚乙基二膦酸四钠 两亲聚合物 界面张力 黏度 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]