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南三块热采自投产以来,随着采出程度的提高,边水推进速度加快,汽窜程度加剧,吞吐效果变差。2010年,通过对区块产状及影响因素的分析,提出了氮气助排、泡沫调剖,合理优化注汽组合,动态调参等综合治理对策,抑制边水推进,减小了汽窜对油井产量的影响,有效的提高了区块采收率,并针对目前开采中存在的问题提出认识。
Since the first three blocks of thermal mining have been put into operation, with the increase of mining production rate, the advancement of edge water has been accelerated, the degree of steam channeling has been exacerbated, and the throughput effect has been deteriorated. In 2010, through the analysis of the production status and influencing factors of the blocks, the countermeasures such as nitrogen-assisted drainage, profile control of foam, reasonable optimization of steam injection combinations and dynamic transfer of parameters were put forward to restrain the advancement of edge water and reduce the risk of steam channeling The impact of oil well production, effectively improve the recovery rate of blocks, and raise awareness of the problems in the current mining.