利用生产动态数据计算平均地层压力评价气顶油藏驱动能量的新方法
首发时间:2024-05-31
摘要:(现有的驱动指数分析方法存在以下问题:需要较为完整的地层压力检测数据;在地层压力史不明确时,无法计算驱动指数。为了解决这些问题,本研究提出在不关井影响生产的前提下,通过改进后的物质平衡方法,利用部分生产动态数据计算出相关参数,进而通过推导公式计算出完整的平均地层压力史。然后基于该方法求出的平均地层压力就可以计算出驱动能量与驱动指数。经该方法计算后,与两组实际现场数据对比,平均相对误差分别为1.28%和1.07%,证明了该方法的有效性,研究结果可为指导油藏开发设计与后续优化提供参考。
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a new method for evaluating the driving energy of gas cap reservoirs by using production performance data to calculate average formation pressure
abstract:the existing driving index analysis methods have the following two problems. relatively complete formation pressure detection data are required to analyse driving index, and the driving index can\'t be indexed when the formation pressure history is unclear. to address these issues, this study proposed to use partial production performance data to calculate relevant parameters through an improved material balance method, in the case of not shutting down the well and affecting the production, and to calculate the complete average formation pressure history by driving a formula. then, based on the average formation pressure obtained by this method, the driving energy and driving index could be calculated. after calculation by this method, compared with two sets of actual field data, the average relative errors were 1.28% and 1.07%, respectively, proving the effectiveness of this method. the research results can guide the design and subsequent optimization of oil reservoir development.
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