哈得逊油田超深海相碎屑岩油藏深部调驱技术与矿场试验

Deep Profile Control Technology in Ultra-deep Marine Clastic Reservoir in Hadexun Oilfield and Its Field Test

为了改善哈得4东河砂岩注水区开发效果,特展开了3个井组的深部调驱矿场试验。室内进行了吸水膨胀性能测试、耐温耐盐性能评价及封堵性试验,结果表明,颗粒类调驱体系具有较好的耐温抗盐性能,具有较好的封堵性能。矿场试验结果表明,随着注水井注水压力升高,实测吸水指数可下降33%。截止到2017年11月30日,试验区3个井组累计增油1.65×10~4t,效果显著。深部调驱技术在试验区的成功应用,对整个东河砂岩油藏开发方式的转变和调整具有十分重要的意义。

In order to improve the efficiency of waterflooding development area of Hade 4 sandstone reservoir,field test was carried out for deep profile control in 3 wellblocks.Tests of swelling property of water absorption,evaluation of temperature and salt tolerance and plugging test were carried out in laboratory,the laboratory studies showed that the particle drive system was of better performance of high temperature and salt resistance and good water shutoff performance.The field test shows that with the increase of waterflooding pressure,the measured absorption index decreases33%.By the end of Nov.2017,the accumulated oil increment is 1.65×10~4t in the 3 wellblocks and obvious effect is obtained.The application indicates that the successful application of deep profile control technology to the pilot test area is of great significance for development of sandstone reservoirs in Hade Oilfield.