【摘要】 牛２０油藏是一个构造简单、主力油层分布稳定、渗透率低、原油性质好的高压低渗透低饱和岩性油藏。针对油藏特点，对油层整体压裂改造，弄清了油层诱生裂缝方向，部署了注采井网；合理地选择了注水时机从而及时补充了地层能量；高压注水，由于水质精细过滤，地层吸水性能好，取得了较好的注水开发效果。更多还原

【Abstract】 Niu 20 reservoir is a structurally simple, main reservoir beds being stable, low permeability,better oil property, abnormally high pressure, and low oil saturation lithological reservoir.According to these reservoir characteristics, overall stimulation of the reservoir by fracturing, making sure the direction of extension of fracture systems, to dispose the injection production well network, starting injection at proper time, compensating reservoir energy on time, high injection pressure, and fine filtration of the water injected are adopted, and a rather satisfactory field development is resulted.更多还原