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分析了陕141井区气井压力、产量的变化,研究了储层对生产动态的影响,把16口生产井分成了实际生产能力超过设计方案的井、达不到设计要求的井和与设计相符的井等3类。研究得出气井产能的大小与气井所处的砂体位置及砂体的厚度有关,位于主砂带内部或有效厚度大的气井,生产能力和生产稳定性较好;位于主砂带边部或有效厚度小、渗透性较差的气井生产能力和生产稳定性差。根据井区实际生产情况和储层特征,利用生产指示曲线确定出该井区生产压差应取静地层压力的16%左右,合理产量取无阻流量的1/3~1/4。此外,还建议采取一些提高地层能量的增产措施,更多地应用提高气层渗流面积、气层保护的相关技术以及气层的相关改造方法,增加气井的产能。
The gas pressure and output changes in Shaan-141 well area are analyzed. The influence of reservoir on production dynamics is studied. The 16 production wells are divided into wells with actual production capacity exceeding the designed ones, wells that fail to meet the design requirements, Well and other 3 categories. It is concluded that the productivity of gas well is related to the location of the sand body and the thickness of the sand body in the gas well. The gas wells located in the main sand belt or with effective thicknesses have better production capacity and production stability. The effective thickness of small, poor permeability gas well productivity and poor production stability. According to the actual production and reservoir characteristics of the well area, the production indicator curve is used to determine that the production pressure difference in this well area should be about 16% of the pressure of the static formation and the reasonable output should be 1/3 to 1/4 of the unobstructed flow rate. In addition, some measures to increase stimulation of formation energy are also suggested. More measures should be taken to increase the seepage area of gas reservoirs, the related technologies of gas reservoir protection and the correlative methods of gas reservoirs to increase the production capacity of gas wells.