L1油藏微球+表面活性剂驱油技术研究与应用杨金峰1，辛萌1，杨飞涛1，卢富强1，高浩2，赵艳艳1，张道法1，李曼平1（1.中国石油长庆油田分公司第五采油厂，陕西西安710200；2.中国石油长庆油田分公司油气工艺研究院，陕西西安710018）摘要：随着注水开发时间延长，姬塬油田超低渗透L1C8油藏面临平面和剖面水驱矛盾突出、油井见水等问题，通过逐轮次实施调剖调驱后，储层物性较好的高渗带优先逐步开采，物性较差的低渗带储层越难挖掘。因此急需探索通过PEG或聚合物微球堵优势水驱通道，扩大波及体积；再利用表面活性剂通过降低界面张力、改变岩石润湿性，改善驱油效率技术思路，实现“堵+驱”改善水驱、提高驱油效率技术。本文采用微球+表面活性剂先堵后驱技术思路，研发了一种AES乳化表面活性剂，通过开展室内评价和14个井组现场应用，取得了较好的驱油及降递减效果，有效的缓解了油藏水驱矛盾，实现区块剩余油的有效开采。关键词：L1C8；JY油田；表面活性剂；驱油中图分类号：TE357.46文献标识码：A文章编号：1673-5285（2023）0苑-0042-05DOI:10.3969/j.issn.1673-5285.20圆3.0苑.009Researchand葬pplicationofmicrospheresandsurfactantfloodingtechnologyinL1reservoirYANGJinfeng1，XINMeng1，YANGFeitao1，LUFuqiang1，GAOHao2，ZHAOYanyan1，ZHANGDaofa1，LIManping1（1.OilProductionPlant5ofPetroChinaChangqingOilfieldCompany，Xi'anShaanxi710200，China；2.OilandGasTechnologyResearchInstituteofPetroChinaChangqingOilfieldCompany，Xi'anShaanxi710018，China）Abstract:Withtheextensionofdevelopmenttimeofwaterinjection,theultra-lowperme原abilityL1C8reservoirinJiyuanoilfieldisfacedwithsomeproblemssuchasobviouscontra原dictionbetweenplaneandprofileofwaterfloodingandwaterbreakthroughinproducingwells.AfterpolymermicrospherefloodingandPEGprofilecontrolroundbyround,thereser原voirofthehighpermeabilityzonewithgoodphysicalpropertiesisprioritizedandgraduallydeveloped,whilethereservoirofthelowpermeabilityzonewithpoorphysicalpropertyismoredifficulttoexcavate.Therefore,itisurgenttoexploretheblockingofthedominantwa原terfloodingchannelbyPEGorpolymermicrospherestoexpandthesweepingvolume.Reusingsurfactantscanimproveoildisplacementefficiencybyreducinginterfacialtension,*收稿日期：圆...
