海上稠油多元热流体吞吐各组分增产优化设计研究  

Research on Optimization Design for Increasing Production of Offshore Heavy Oil Multi-thermal Fluid Handling Components

作　　者：冯祥[1] 李敬松[1] 杨兵[1] 石海磊[1] FENG Xiang;LI Jingsong;YANG Bing;SHI Hailei(Oilfield Production Research Institute of China Oilfield Selwices Limited,Tianjin 300459,China)

机构地区：[1]中海油田服务股份有限公司油田生产研究院,天津300459

出　　处：《重庆科技学院学报（自然科学版）》2018年第4期28-32,共5页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：国家科技重大专项"海上稠油多元热流体热采机理及配套工艺技术研究"(2011ZX05024-005-001)

摘　　要：针对渤海稠油油藏特点,通过物理模拟实验分析多元热流体各组分蒸汽、CO2及N2对地层及原油的影响。根据实验数据观察各组分的增产效果,蒸汽加热降黏可使稠油采油指数提高1.5~10倍,饱和CO2可使稠油黏度降低50%~90%,N2增能保压作用明显。运用数值模拟手段,对比多元热流体不同组成比例对热采吞吐效果的影响,以及不同温度下各组分对增产效果的贡献。随着多元热流体注入温度的升高以及气体组成中CO2比例的增加,热采效果更佳。多元热流体热采技术在渤海稠油油田的单井吞吐试验成功,表明该技术可以作为海上稠油油藏挖潜增效主力措施之一。According to the characteristics of Bohai heavy oil reservoir,physical simulation experiments are carried out to analyze the effect of components of the multiple thermal fluid steam,CO2 and N2 on formation and the crude oil. The experimental data shows steam heating visbreaking of heavy oil can increase production index by 1. 5 ~ 10 times,saturated CO2 making the viscosity decrease 50% ~ 90% and increased N2 can keep pressure to increase production. By means of numerical simulation,different thermal recovery effects are compared with multiple thermal fluid composition ratio,and the contribution of components to the yield ratio is calculated under different temperature.With multiple thermal fluid injection temperature and the percentage of CO2 increasing,the effect of heavy oil thermal recovery becomes better. The stimulation test in a single well of multiple thermal fluid of thermal recovery technology is successful in Bohai oilfield,indicating that the technology can be used as one of the main offshore heavy oil reservoir development efficiency measures.

关 键 词：稠油油藏 多元热流体吞吐 增产机理 数值模拟 现场试验 

分 类 号：TE345[石油与天然气工程—油气田开发工程]