海上低幅边底水稠油油藏氮气泡沫调驱技术应用效果评价  

EVALUATION OF APPLICATION EFFECTS OF NITROGEN FOAM FLOODING IN OFFSHORE HEAVY OIL RESERVOIR WITH BOTTOM WATER IN ULTRA LOW RELIEF STRUCTURE

作　　者：张吉磊 李廷礼 张昊 章威 欧阳雨薇 ZHANG Jilei

机构地区：[1]中海油(中国)有限公司天津分公司渤海石油研究院 [2]中国石油集团渤海钻探工程有限公司定向井技术服务分公司

出　　处：《钻采工艺》2019年第4期70-73,10,共4页Drilling & Production Technology

基　　金：国家科技重大专项“海上油田丛式井网整体加密及综合调整油藏工程技术应用研究”(编号:2011ZX05024-004)

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。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 "2-polar 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 × 10~4 m^3. 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.

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 

分 类 号：TE3[石油与天然气工程—油气田开发工程]