射孔井产能预测方法研究

发布时间：2018-04-11 18:10

本文选题：产能比 + 射孔参数　；参考：《西安石油大学》2015年硕士论文

【摘要】：在射孔完井的优化设计中,射孔参数对射孔效果的影响是最为显著的,这些参数的改变将会在很大程度上决定射孔方案是否成功。运用半解析的方法分别建立了直井、斜井、水平井三种井型的产率比模型,考虑到射孔参数的复杂性和不准确性,建立了各种井型的表皮系数计算公式。根据所建立的模型,并用C Sharp开发了相应的集成计算软件,能对不同射孔参数条件下直井、定向斜井、水平井的产能进行计算,也能针对射穿和未射穿污染带时射孔参数对产率比的影响进行排序。运用双因素分析,通过软件进行大量产率比计算,根据计算数据分别得出各个射孔参数对油气井产能的影响大小,并且绘制出其与油气井产能比的关系图表,以此为依据对各种射孔参数对于产率比的影响进行分析。考虑到射孔参数对套管强度的影响,运用灰色关联法对射孔参数的影响大小进行排序,然后运用优劣距离法对射孔参数进行优化组合分析,最后通过对于某区块地层具体参数应用,结合所建立的模型和编制的软件,提出了该区块的射孔参数优化设计方案。
[Abstract]:In the optimal design of perforation completion, the perforation parameters have the most significant effect on the perforation effect, and the change of these parameters will largely determine the success of the perforation scheme.The productivity ratio models of three types of wells, vertical well, inclined well and horizontal well, are established by semi-analytical method. Considering the complexity and inaccuracy of perforation parameters, the formulas for calculating the skin coefficient of various well types are established.According to the established model, the corresponding integrated calculation software is developed with C Sharp, which can calculate the productivity of vertical well, directional inclined well and horizontal well under different perforation parameters.The influence of perforation parameters on the yield ratio can also be sorted.By means of two-factor analysis, a large number of productivity ratios are calculated by software. According to the calculated data, the influence of each perforation parameter on the productivity of oil and gas wells is obtained, and the relationship between the perforation parameters and the productivity ratio of oil and gas wells is drawn.Based on this, the influence of perforation parameters on yield ratio is analyzed.Considering the influence of perforating parameters on casing strength, the grey correlation method is used to sort the influence of perforating parameters, and then the optimal combination analysis of perforation parameters is carried out by using the method of superior and inferior distance.Finally, through the application of the formation parameters of a certain block, combined with the established model and the software, the optimum design scheme of perforation parameters of the block is put forward.
【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE257.1;TE328

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