缝洞型碳酸盐岩气藏的单井试采配产方法研究——以高石梯灯四气藏为例
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摘要
缝洞型碳酸盐岩气藏,其缝洞体分布复杂,非均质性强,不适合采用传统的气井无阻流量经验配产法。以高石梯区块灯四缝洞型气藏为例,在综合分析地质特征和试井曲线特征基础上,建立气藏的渗流物理模型;采用基于数值试井和数值产量分析的方法,对该气藏早期试采阶段的单井进行配产计算,其结果与气藏单井产能测试结果具有一致性。由此提出了灯四缝洞型气藏各渗流物理模型的单井合理配产原则。
The fracture-vuggy carbonate gas reservoir has a complex distribution of fractured-vuggs and very strong heterogeneity. The traditional gas well distribution method is not suitable for guiding the production and development of this type of gas reservoir. On the basis of the comprehensive analysis of geological features and well test curves,four physical models of the gas reservoir are given by taking the Dengsi fractured-vuggy gas reservoir in Gaoshiti block as an example. Furthermore,based on numerical well testing and numerical production analysis,a reasonable production method for single well production in the early trial production stage of fracture-vuggy reservoir is proposed. The reliability of the single well distribution method is proved by the results of single well productivity test and early production of Gaoshiti gas reservoir. Subsequently,the principle of the single well production distribution corresponding to different seepage physical models of Gaoshiti fractured-vuggy gas reservoir is determined.
The fracture-vuggy carbonate gas reservoir has a complex distribution of fractured-vuggs and very strong heterogeneity. The traditional gas well distribution method is not suitable for guiding the production and development of this type of gas reservoir. On the basis of the comprehensive analysis of geological features and well test curves,four physical models of the gas reservoir are given by taking the Dengsi fractured-vuggy gas reservoir in Gaoshiti block as an example. Furthermore,based on numerical well testing and numerical production analysis,a reasonable production method for single well production in the early trial production stage of fracture-vuggy reservoir is proposed. The reliability of the single well distribution method is proved by the results of single well productivity test and early production of Gaoshiti gas reservoir. Subsequently,the principle of the single well production distribution corresponding to different seepage physical models of Gaoshiti fractured-vuggy gas reservoir is determined.
引文
[1]魏国齐,杜金虎,徐春春,等.四川盆地高石梯-磨溪地区震旦系-寒武系大型气藏特征与聚集模式[J].石油学报,2015,36(1):1-12.
[2]魏国齐,杨威,杜金虎,等.四川盆地高石梯-磨溪古隆起构造特征及对特大型气田形成的控制作用[J].石油勘探与开发,2015,42(3):257-265.
[3]肖富森,陈康,冉崎,等.四川盆地高石梯地区震旦系灯影组气藏高产井地震模式新认识[J].天然气工业,2018,38(2):8-15.
[2]魏国齐,杨威,杜金虎,等.四川盆地高石梯-磨溪古隆起构造特征及对特大型气田形成的控制作用[J].石油勘探与开发,2015,42(3):257-265.
[3]肖富森,陈康,冉崎,等.四川盆地高石梯地区震旦系灯影组气藏高产井地震模式新认识[J].天然气工业,2018,38(2):8-15.