安塞特低渗油田注水开发效果分析

根据安塞油田王窑区王１９－４ 井组的静态资料及生产动态资料，分析了油层吸水状况、油井见效及见水时间、产量、动液面及含水等动态变化情况，并进行了产能预测，分析了井组中存在的问题。研究表明井组内注水压力平稳，油层吸水状况良好，注水见效时间快，见效程度高，无水采油期长，大部分油井生产形势平稳，产量下降幅度不大，稳产期较长。王窑区油藏自然能量的最终采收率只有８％ ，而注水后水驱采收率提高到２１．９％ ，体现了长６１ 油层的注水开发效果较好。该研究结果对特低渗油田注水开发提高采收率具有指导意义。

Waterflooding effect analysis of Ansai oilfield with extra low permeability .

According to the static and productive performance data of Wang 19 4 well group in Wangyao block of Ansai oilfield, such performance behaviors as the formation water receptivity, response time, water breakthrough time, production, producing fluid level and water cut, etc. in oil wells have been analyzed. Its production prediction has been made and the problems with the well group has been analyzed too. It shows that water injection is an effective measure for developing this block. The ultimate recovery developed by nature energy in Wangyao block would be 8%, but it will be 21.9% by waterflooding. This result has guiding significance for developing extra low permeability oilfield by waterflooding.