庙125X1断块NgⅡ3小层属于常规稀油油藏,主要以水平井开发为主,为补充地层能量、改变液流方向,2008年转入注水开发,在注水开发中进行剩余油挖潜,但油井表现出见效快、易水淹特征,通过周期注水、动态调控、调剖调驱等手段调控效果差、有效期短。针对这些问题,对生产井M125-P6井进行CO吞吐试验,获得成功,增油效果明显,同时为浅层稀油油藏水平井控水提供了指导作用。 Miao 125X1 fault block NgⅡ3 belongs to the conventional thin oil reservoirs and is mainly developed mainly for horizontal wells. In order to supplement the formation energy and change the flow direction, it transferred to waterflood development in 2008 and tapped the remaining oil potential in waterflood development. However, Showed quick, easy flooding features, through the cycle of water injection, dynamic regulation, profile control and other means of regulation and control of poor, short effective period. In response to these problems, the CO huff-and-puff test of well M125-P6 in production well is successful, and the effect of oil increase is obvious. At the same time, it provides a guideline for water control of horizontal wells in shallow thin oil reservoirs.