塔河油田AT1区块T2a3凝析气藏综合治理研究

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塔河油田AT1区块T₂a³凝析气藏综合治理研究

摘要: 砂岩凝析气藏见水后开发效果迅速变差,见水后治理成本高、难度大.塔河油田AT1区块T₂a³凝析气藏存在井网分布不均导致局部采速过高、储层非均质性严重、开发初期采气强度偏大、前期认识存在局限性等问题,通过捕捉生产动态中的异常信号,认为气藏存在底油,并据此形成了以油基堵剂堵水等为代表的改善开发效果的针对性技术手段.通过利用隔夹层和平面非均质性进行剩余油气挖潜,取得了较好的治理效果.
- 夹层 /
- 非均质性 /
- 凝析气藏 /
- 塔河油田
Abstract: In sandstone condensate gas reservoirs, production declined rapidly after water breakthrough and countermeasures were expensive and difficult. In the condensate gas reservoirs in T₂a³ in the block AT1 of the Tahe Oilfield, wells were deployed unevenly, resulting in excessively high recovery speed regionally, strong re-servoir heterogeneity, strong gas recovery intensity in initial stage, and restricted potential prediction. The abnormal signals in production indicated bottom oil in gas reservoirs. Oil-based water-plugging agent was applied to improve recovery rate. Interlayers and plane heterogeneity were applied to tap residual oil.
- interlayer /
- heterogeneity /
- condensate gas reservoir /
- Tahe Oilfield

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