α-烯基聚醚衍生物在地层介质中的吸附与矿化度的相关性

Relationship Between Adsorption of α-olefine Polyether Derivative and Salinity in Geological Media

α-烯基聚醚衍生物具有很高的耐盐性,已经用于高矿化度稠油的乳化降黏。研究了α-烯基聚醚衍生物在地层介质包括蒙脱土、碳酸盐和硅酸盐中的吸附性,并阐述了α-烯基聚醚衍生物抗地层吸附的原理。结果表明,α-烯基聚醚衍生物与一般常用表面活性剂相比,在使高矿化度水具有低表面张力的同时,在地层介质中的吸附量也随着矿化度的增加而减少。由于α-烯基聚醚衍生物具有很高的耐盐能力,可与KCl复合使用,能有效地抑制地层膨胀,减少地层介质的吸附。

With the character of high salt-resistance,α-olefine polyether derivative had been used in emulsification and viscosity-decreasing of high-salinity heavy oil.Its adsorption in different geological media including montmorillonite,carbonate and silicate was studied.The mechanism of α-olefine polyether derivative＇s resisting stratigraphic medium＇s adsorption was elaborated also.Under the same condition,it is discovered that,compared to common surfactant,α-olefine polyether derivative can lead high-salinity solution to have low surface tension,meanwhile,its adsorption in geological media decreased obviously with the increase of the solution salinity.Because of high salt-resistance,α-olefine polyether derivatives can effectively inhibit the bulge of geological medium and decrease the absorption on geological medium,while combining with KCl.