Abstract:  Affected by the rhythm of the channeling, the high oil-water mobility ratio and the strong heterogeneity of reservoirs in Qinhuangdao 32-6 oil field, the injection water channels along the high permeability wide pores, resulting in fast increase in water cut, large decrease in production, prominent contradiction between formation layers, and low recovery rate after water flooding. In order to solve the existing problems, laboratory research and pilot test were carried out regards nitrogen foam flooding technology. The laboratory test results show that nitrogen foam flooding can preferentially plug the high permeability formations and stimulate the performance of low permeability layers, making the water injection changed from the “ 2polar displacement” to “ homogeneous displacement”. The recovery rate can be improved 24. 8% . The pilot has achieved obvious effects in water control and oil increment, the well group comprehensive water cut down 5% , cumulative oil increase 4. 5 × 10⁴m³ . Successful application of nitrogen foam flooding pilot test for the technology promotion, the application provides a valuable mine Experience has important significance for the further development of water control and stable oil work in offshore heavy oil field.

Key words:  , nitrogen foam profile control, offshore oilfield profile control performance, oil displacement performance, pilot test

摘要：  由于秦皇岛32-6油田储层非均质性强，油水流度比大，注入水受韵律性的影响沿高渗透大孔道发 生窜流，造成油田含水上升快、产量递减大、层间矛盾突出、水驱采收率低。针对上述注水开发存在的问题，开展了氮气泡沫调驱技术室内研究和矿场先导试验。室内试验研究表明，氮气泡沫调驱具有优先封堵高渗层，启动低渗 层性能，使注入水由“两极分化驱替”转为“均匀驱替”；同时可在水驱采收的基础上提高采收率24.8 ％；氮气泡沫 调驱技术取得了明显的控水增油效果，井组综合含水下降了 ５％，累计增油 4.5×10^４ ｍ^３ 。氮气泡沫调驱技术先导 试验的成功应用为该项技术推广、应用提供了宝贵的矿场经验，对海上稠油油田的控水稳油工作的深入开展具有 重要意义。

关键词:  氮气泡沫调驱, 海上油田调剖性能, 驱油性能, 先导试验