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南梁西区块长3油藏共开发长3_3~1、长3_3~2、长3_3~3三个小层,其中长3_3~2、长3_3~3层发育较好,为主力开发层系,目前长3_3~3层主要作为南梁西区块的补孔潜力层位。在开发过程中发现长3层水平井出现见水含水上升的情况。通过对长3油藏见水水平井,确定见水周期、来水方向以及含水情况。同时根据油井含水情况以及见水特征制定出相应的措施。最后,根据措施效果,制定一套长3油层与长4+5油层注水串层的合理治理方法,确立了延长组高角度裂缝发育的治理对策,为后期长3层规模开发,完善注采井网提供了宝贵经验。
The Chang3 reservoir in Nanliangxi block has developed 3 3 ~ 1, 3 ~ 3 ~ 2 and 3 ~ 3 ~ 3 three sublayers, of which 3 ~ 3 ~ 2 and 3 ~ 3 ~ 3 layers are well developed, At present, the 3_3 ~ 3 long layers are mainly used as the potential fill holes in the Nanliangxi block. In the course of development, it was found that there was an increase in water and water content in horizontal wells in the long three layers. Through the horizontal well of Chang3 reservoir, the water cycle, the direction of incoming water and the water content are determined. At the same time according to the well water content and see the water characteristics of the corresponding measures. Finally, according to the effect of the measures, a set of reasonable treatment methods for the waterflood formation of the Chang 3 and Chang 4 + 5 reservoirs is established, and the control measures for the development of the high-angle fractures in the extension group are established. Network provides valuable experience.