摘要
复杂断块油藏具有断层多、断块小、砂体横向分布稳定性差、油水对应关系复杂和井网控制程度低等多种特点,实际开发效果常受到一定程度的限制。文章以渤海湾地区某典型区块的复杂断块普通稠油油藏为例,从生产特征曲线分析、含水和产油阶段变化、动液面及产吸剖面差异、各断块油层动用程度等多个角度,系统分析和评价了该典型区块可动凝胶深部调驱的实际开发动态及效果。明确了该类油藏深部调驱过程中普遍存在的产油递减速度快、油层能量亏空严重、层间吸水差异加大以及不同部位和区域动用程度差别明显等四大关键问题,进而提出了相应的挖潜建议。研究方法及结论对其他类似区块凝胶调驱的开发效果评价及挖潜措施制定有一定的借鉴和指导意义。
Complicated fault-block reservoirs have the characteristics of many and small fault blocks,poor stability of sand lateral distribution,the complex connectivity between oil and water well,and the low control degree of well pattern,the actual development effect is limited.Taking ordinary heavy oil reservoirs of complicated fault block in Bohai Bay Area as example,the actual development performance and effect of movable gel deep profile control and flooding technique were systematically analyzed and evaluated based on the analyzing the production characteristic curve,the changes of water cut and oil production,the discrepance of working fluid level and injection-production profile and each block's producing degree etc.Four key problems existent in deep profile control and flooding process were determined,which included oil production rate decreasing fast,serious formation's energy depletion,great difference of layer-to-layer injection profile and producing degree in different areas and regions.Furthermore,some associated potential production suggestions were put forward.Based on the studies above,the research methods and results have some reference meaning for evaluating development effect and making potential tapping measures of other similar blocks.
出处
《钻采工艺》
CAS
北大核心
2010年第5期47-51,共5页
Drilling & Production Technology
基金
国家重大技术装备研制和重大产业技术开发专项:改善高含水油田后期水驱效果技术开发和应用(05-06专项课题)
中国石油天然气股份有限公司科学研究与技术开发项目(06-02A-01-02)
关键词
可动凝胶
深部调驱
复杂断块
效果评价
挖潜措施
movable gel,deep profile control and flooding,complicated fault block,effect evaluation,potential production measures
