摘要
针对姬塬油田侏罗系油藏受采液强度大、边底水推进等影响,油藏含水率上升快,产量递减大,前期通过聚合物微球调驱、PEG调剖等调驱效果不明显、工艺适应性较差,因此,开展了侏罗系油藏黏弹自调控剂调剖技术实验。该药剂进入底水层大孔隙剪切小黏度大、使注入介质在上部油层小孔隙高剪切黏度小流速快,可以实现“堵水不堵油”的效果,开展了室内评价和6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。
The Jurassic oil reservoir in Jiyuan oilfield is affected by high liquid production intensity and advancing edge and bottom water,resulting in a rapid increase in water content and a significant decrease in production.In the early stage,the effect of polymer microsphere flooding and PEG profile control was not significant,and the process adaptability was poor.Therefore,the profile control technology experiment of viscoelastic self-regulating agent in Jurassic reservoirs was carried out.The agent enters the bottom water layer and has low shear and high viscosity in large pores.Entering the upper oil layer,the viscosity is low and the flow rate is fast in small pores,which can achieve the effect of"blocking water without blocking oil".Indoor evaluation and on-site application of 6 well groups were carried out on site,achieving good oil displacement and decline reduction effects,effectively alleviating the water drive contradiction in the reservoir,and achieving effective extraction of remaining oil in the block.
作者
杨金峰
李忠洋
彭瑞强
李曼平
YANG Jinfeng;LI Zhongyang;PENG Ruiqiang;LI Manping(Oil Production Plant 5 of PetroChina Changqing Oilfield Company,Xi'an Shaanxi 710200,China)
出处
《石油化工应用》
CAS
2024年第1期58-61,共4页
Petrochemical Industry Application
关键词
JY油田
延9油藏
黏弹自调控剂
调剖
JY oilfield
Yan 9 reservoir
viscoelastic self-regulating agent
profile control
