三塘湖油田致密油油藏水平井采用衰竭式开发，开发初期单井产量高，后期产量递减速度快。探讨了三塘湖致密油油藏注水吞吐增油机理，结合矿场试验结果，运用数值模拟对注水吞吐累计注入量、焖井时间、注入速度、吞吐轮次等4个主要参数进行了优化。注水吞吐、补能压裂2项技术在三塘湖致密油油藏已规模应用，效果良好。对该类油藏的开发具有一定的借鉴意义。
The production of single well was high at the initial stage, and decreased rapidly in the depleted development of horizontal well in tight oil reservoirs of Santanghu Oilfield. Preliminary field test results showed that water injection stimulation and supplementary energy fracturing were effective. The mechanism of water injection oil increment in the tight oil reservoirs was studied, the four major parameters, i.e. the cumulated soaking capacity in water injection, soaking time, injection velocity and its soaking cycles, were optimized by using numerical simulation in combination with field test results. At present the tow technologies have been used in the tight reservoirs of Santanghu Oilfield at large scale. The study provides reference for the development of similar reservoirs.
