中高温低渗透油藏深部调剖凝胶体系的制备

Research on in-depth profile control gel system for moderate-high temperature and Low-permeability reservoir

基于大庆油田中高温低渗透油藏地质开发特点,通过室内实验系统地分析了复合有机铬凝胶体系各个组分对成胶过程的影响情况,优选配方,并对其作出性能评价。研究表明,通过组分含量调整可以实现对凝胶体系的成胶控制,优选凝胶体系均表现出较好的热稳定性、抗剪切性和有效封堵高渗透层的性能。

Based on the development behaviors of geological characteristics in moderate-high temperature and low-permeability reservoir of Daqing oilfield, the effects of various components of Composite organic chrome gela- tion system on the gelation process of deep profile controlling were systematically analyzed by laboratory experi- ments. Then the formulas were optimized, and their performance were evaluated further. The results show that the desired gelling effect can be achieved by optimizing components of gel system. The optimal gel system showed good performance, such as the good thermal stability, shearing resistance and the effective plugging high permeable stra- ta.