稠油油藏蒸汽吞吐转蒸汽驱可行性研究
发布时间：2019-01-25 09:20
【摘要】：随着常规石油储量的日益减少和世界对石油需求的不断增加,具有巨大勘探潜力的稠油已经得到越来越多国家的重视,蒸汽吞吐作为开发稠油油藏较为成熟的技术,因其工艺简单、成本低廉等优点,在我国许多油田都得到了广泛应用。金家油田东三段4砂层组自2010年5月采用水平蒸汽吞吐进行开采,但随着吞吐的进行,产量递减较快,地层压力下降幅度较大,鉴于目前开发形势,着眼于油田长远发展,进行热采稠油开发方式的转换的研究与试验是极为重要的。本文通过对该区块油藏开发现状分析,对其典型井蒸汽吞吐递减规律进行了研究,得出目前油藏开发存在的问题并提出相关建议。基于油田实际地质资料建立了符合实际的地质模型,在完成历史拟合的基础上,分析了目前剩余油分布特点。研究了注采参数对水平井蒸汽驱开发效果的影响规律,主要包括蒸汽干度、注汽速度、采注比、注气温度、转驱时机、井网模型、间歇汽驱停注比等因素。根据影响因素的分析结果,以采出程度为指标,运用正交设计优化方法,对注汽速度、蒸汽干度、采注比和注汽温度等因素进行了多参数优化设计,通过对比经济评价结果得出了最佳蒸汽驱方案,对该区块油藏后续热采开发具有一定的指导意义。
[Abstract]:With the decrease of conventional oil reserves and the increasing demand for oil in the world, heavy oil with great exploration potential has been paid more and more attention by more and more countries. Steam huff and puff is a more mature technology for developing heavy oil reservoirs. Because of its simple process and low cost, it has been widely used in many oilfields in China. The 4th sand formation of East third member of Jinjia Oilfield has been exploited by horizontal steam huff and puff since May 2010. However, with the development of huff and puff, the production decreases rapidly and the formation pressure decreases greatly. In view of the present development situation, the reservoir is focused on the long-term development of the oilfield. It is very important to study and test the change of development mode of thermal recovery heavy oil. Based on the analysis of the present situation of reservoir development in this block, the rule of steam huff and puff decline in typical wells is studied in this paper, and the problems existing in reservoir development at present are obtained and relevant suggestions are put forward. Based on the actual geological data of the oil field, the geological model is established. On the basis of the historical fitting, the distribution characteristics of the remaining oil are analyzed. The influence of injection and production parameters on the development effect of steam flooding in horizontal wells is studied, including steam dryness, steam injection velocity, production / injection ratio, gas injection temperature, turning time, well pattern model, intermittent steam drive stop injection ratio and so on. According to the analysis results of the influencing factors and taking the degree of recovery as the index and using the orthogonal design optimization method, the factors such as steam injection velocity, steam dryness, production-injection ratio and steam injection temperature are optimized by multi-parameter design, such as steam injection velocity, steam dryness, injection ratio and steam injection temperature, etc. The best steam flooding scheme is obtained by comparing the economic evaluation results, which has certain guiding significance for the subsequent thermal recovery development of the reservoir in this block.
【学位授予单位】：中国石油大学(华东)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE357.44
本文编号：2415003
[Abstract]:With the decrease of conventional oil reserves and the increasing demand for oil in the world, heavy oil with great exploration potential has been paid more and more attention by more and more countries. Steam huff and puff is a more mature technology for developing heavy oil reservoirs. Because of its simple process and low cost, it has been widely used in many oilfields in China. The 4th sand formation of East third member of Jinjia Oilfield has been exploited by horizontal steam huff and puff since May 2010. However, with the development of huff and puff, the production decreases rapidly and the formation pressure decreases greatly. In view of the present development situation, the reservoir is focused on the long-term development of the oilfield. It is very important to study and test the change of development mode of thermal recovery heavy oil. Based on the analysis of the present situation of reservoir development in this block, the rule of steam huff and puff decline in typical wells is studied in this paper, and the problems existing in reservoir development at present are obtained and relevant suggestions are put forward. Based on the actual geological data of the oil field, the geological model is established. On the basis of the historical fitting, the distribution characteristics of the remaining oil are analyzed. The influence of injection and production parameters on the development effect of steam flooding in horizontal wells is studied, including steam dryness, steam injection velocity, production / injection ratio, gas injection temperature, turning time, well pattern model, intermittent steam drive stop injection ratio and so on. According to the analysis results of the influencing factors and taking the degree of recovery as the index and using the orthogonal design optimization method, the factors such as steam injection velocity, steam dryness, production-injection ratio and steam injection temperature are optimized by multi-parameter design, such as steam injection velocity, steam dryness, injection ratio and steam injection temperature, etc. The best steam flooding scheme is obtained by comparing the economic evaluation results, which has certain guiding significance for the subsequent thermal recovery development of the reservoir in this block.
【学位授予单位】：中国石油大学(华东)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE357.44
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