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海上稠油多元热流体吞吐各组分增产优化设计研究 |
Offshore heavy oil multi-thermal fluid handling components increasing produciton optimization design research |
投稿时间:2018-03-19 修订日期:2018-03-19 |
DOI: |
中文关键词: 稠油油藏 多元热流体吞吐 增产机理 数值模拟 现场试验 |
英文关键词: heavy oil reservoirs multiple thermal fluid stimulation production mechanism numerical simulation field test |
基金项目:国家级基金项目: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) |
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中文摘要: |
针对渤海稠油油藏特点,通过物理模拟实验,分析了多元热流体各组分蒸汽、CO2及N2对地层及原油的影响程度。由实验数据量化说明了各组分增产效果,蒸汽加热降粘可使稠油采油指数提高1.5~10倍,饱和CO2可使稠油粘度降低50%~90%,N2增能保压作用明显。运用数值模拟手段,对比了多元热流体不同组成比例对热采吞吐效果的影响及不同温度下各组分对增产的贡献比例,随着多元热流体注入温度的升高,以及气体组成中所含CO2比例的升高,热采效果越好。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。 |
英文摘要: |
According to the characteristics of bohai heavy oil reservoir, by physical simulation experiments, analysis of components of the multiple thermal fluid steam, CO2 and N2 for the influence degree of formation and the crude oil, according to the experimental data, quantitative illustrates the effects of components, steam heating visbreaking of heavy oil production index can be increased by 1.5~10 times, saturated CO2 can make the viscosity decreased 50%~90%, increased N2 can keep pressure effect. By means of numerical simulation, compared the multiple thermal fluid composition ratio of different thermal recovery stimulation effect, and calculates the contribution to the yield ratio of components under different temperature, with multiple thermal fluid injection temperature increased, and the percentage of CO2 increases, the better the effect of heavy oil thermal recovery. Multiple thermal fluid of thermal recovery technology in bohai oilfield of single well stimulation test is successful, indicating that the technology can be used as one of the main offshore heavy oil reservoir development efficiency measures. |
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