Composition of an organic foaming additive for high temperature and high salinity
申请人:INSTITUTO MEXICANO DEL PETRÓLEO
公开号:US10457863B2
公开(公告)日:2019-10-29
The present invention refers to the formulation of a foaming agent for extreme conditions of salinity, temperature and concentration of divalent ions, including the improvement in the performance in these conditions with respect to the patent MX2008015989 A. Also, the design is presented of the experimental equipment used to characterize and evaluate foaming agents at laboratory level and conditions of pressure, temperature and salinity, in oil fields. The formulation of the foaming agent derived from this invention is a mixture of sodium alpha olefin sulfonates, alkylamido propyl betaines and triethanolamine, capable of giving it the benefit of being stable in temperature and salinity in a wide range, diluted in synthetic and congenital brines. This formulation is applicable for the control of gas mobility and improved oil recovery processes in naturally fractured reservoirs.
本发明涉及在盐度、温度和二价离子浓度等极端条件下的发泡剂配方,包括与专利 MX2008015989 A 相比在这些条件下的性能改进。此外,本发明还介绍了用于在实验室水平以及油田的压力、温度和盐度条件下表征和评估发泡剂的实验设备的设计。本发明的发泡剂配方是α-烯烃磺酸钠、烷基酰胺丙基甜菜碱和三乙醇胺的混合物,在合成盐水和先天性盐水中稀释后,能在很宽的温度和盐度范围内保持稳定。这种配方适用于控制天然裂缝储层中气体的流动性和改进采油工艺。