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针对延长东部油田浅层水平缝发育油藏注水开发中存在的问题，根据矿场实践及测试统计结果，研究了该类储层裂缝分布规律，总结了不同于高角度裂缝和垂直裂缝发育油藏的注水开发特征。研究结果表明：该类储层中天然裂缝在物性较好的区域更易连续、成片集中分布。天然裂缝发育集中和连续区域的油井压裂破裂压力也相对较低，更易形成水淹区域；水平缝发育油藏注水开发中，裂缝发育区域周围的油井注水易形成多方向连片水淹，治理难度大，水驱效果较差。实践表明,水平缝发育油藏单靠平面井网优化难以有效避免注入水沿油井水窜，需寻求注采位置与沉积韵律和裂缝系统的纵向优化配置。研究成果对浅层水平缝发育低—超低渗透油藏有效注水开发具有积极指导作用。
In order to prolong the development of reservoir waterflooding in the shallow horizontal seam in the eastern oilfield, the distribution of fractures in this reservoir is studied according to the field practice and the test results. The reservoir development different from the high-angle fractures and vertical fractures is summarized Of water injection development characteristics. The results show that the natural fractures in this kind of reservoir are more continuous in the areas of better physical properties and the distribution of the pieces is concentrated. In the developing process of waterflooding of horizontal reservoirs, the injection of water around the fractured development area is prone to form multi-directional contiguous flooding and control Difficulty, poor water flooding. The practice shows that it is difficult to effectively avoid the injection of water along the oil well by the optimization of horizontal well pattern in the horizontal seam development. The longitudinal optimization of the injection and production location and sedimentation rhythm and fracture system is required. The research results have a positive guiding effect on the effective injection development of shallow-ultra-low permeability reservoirs with shallow horizontal seam.