新型插层聚合物溶液性能及其作用机理研究  

Performance and Mechanism Study on HPAM/Layered Silicate Nanocomposite Solutions

作　　者：张玉梅[1] 于涛 卢祥国[1] 王树霞[1] 

机构地区：[1]提高油气采收率教育部重点实验室,东北石油大学,黑龙江大庆163318 [2]中国石油大庆炼化公司研究院,黑龙江大庆163000

出　　处：《油田化学》2012年第2期199-205,共7页Oilfield Chemistry

基　　金：国家油气重大专项"高效深部液流转向与厚油层控水挖潜配套技术"(项目编号2008ZX05010-004)

摘　　要：针对矿场实际需求,利用现代油藏工程理论、仪器检测分析和物理模拟方法,开展了插层聚合物溶液分子聚集态、增黏性、抗盐性、耐温性、稳定性、分子线团尺寸、流变性、黏弹性和流动特性实验研究,进行了性能特征及其影响机理的分析和探索。结果表明,插层聚合物聚集态主要以"层叠片状"为主,而"高分"聚合物聚集态呈长链立体网络结构。相对于普通聚合物而言,插层聚合物具有较好的耐温抗盐性和稳定性以及流变性和黏弹性。在流动特性实验中,相较于普通聚合物,插层聚合物溶液具有黏度小,但阻力系数和残余阻力系数较大的渗流特点,表现出了良好的液流转向能力。Allowing for the actual demands of the oilfields, the performance of the viscosity, salt tolerance, temperature resistance, time stability, molecular coil dimension, molecular aggregation, rheological property, viscoelasticity and flow characteristics of the HPAM/layered silcated nanoeomposite （PLSN） solution was evaluated by modern reservoir engineering theory, equipment analysis and the physical simulation. The results showed that, the PI.SN had an excellent salt tolerance, temperature resistance and time stability compared to the common polymer including ＂salt tolerance＂ polymer and ＂high molecule weight＂ polymer. The aggregation of PLSN was mainly a ＂flaky-reticular＂ formation while the ＂high molecule weight＂ HPAM had an elongated chain reticular configuration. Furthermore, oil displacement eiticiency of PLSN would be higher than that of the common polymer because of its excellent viscoelasticity. Core flooding tests results indicated that, compared with common polymer, the PLSN material was characterized of lower viscosity and higher resistance factor and residual resistance factor, which ensured that the PLSN solution had a good fluid diverting role.

关 键 词：插层聚合物 黏度 流变性 黏弹性 分子线团尺寸 聚集态 流动特性 

分 类 号：TE357.46[石油与天然气工程—油气田开发工程]