致密油藏空气泡沫驱用起泡剂的室内实验筛选

摘要

Air foam flooding can solve the problem of water flooding in tight reservoir,and the performance requirements of different oil pools are different.Taking an oil field in northern Shanxi as an example,the general performance of the primary foaming agent was deter⁃mined,and then the ross⁃mill static test was used to evaluate the performance of the foam,and the foam system was used to determine the resistance factor in the core and the matrix.Experiments show that 3‰WZJ013⁃H foaming agent in fractured tight oil reservoirs can produce more stable obvious blocking and can be used be the dense oil reservoir of air foam flooding of the foaming agent,also for other tight reservoir foam system to provide references for the optimization.%空气泡沫驱可以较好解决致密油藏水驱见水快的问题，不同油藏对空气泡沫驱用起泡剂性能要求不一。以陕北某油田油藏资料为例，初选起泡剂进行常规性能室内测定，再采用Ross⁃mills静态实验法评价起泡、稳泡性能，并通过一维岩心驱替实验对比优选出泡沫体系WZJ015和WZJ013⁃H在劈缝岩心和基质岩心中产生阻力因子。实验表明，3‰的WZJ013⁃H型起泡剂在裂缝型致密油藏中可以产生较稳定明显的封堵，可用作该致密油藏空气泡沫驱的起泡剂，也为其他致密油藏泡沫体系筛选提供参考。