动态“一点法”产能方程在气藏开发中的应用  

The Application of Dynamic Single Point Method Productivity Equation in Gas Reservoir

作　　者：杨柳 袁辉 杨志兴 

机构地区：[1]中海石油(中国)有限公司湛江分公司,湛江524057

出　　处：《科学技术与工程》2013年第2期291-293,303,共4页Science Technology and Engineering

摘　　要：针对目前"一点法"试井在气藏开发应用中存在的问题,推导出动态"一点法"的产能公式。通过选择一个测试点中的地层压力、井底流压和产量值,计算此地层压力条件下的天然气物性参数。结合试井资料结果,求取此条件下的α值,继而求解当前测试条件下的动态产能。此方法克服了常规方法笼统地使用一次回归得到的产能系数来计算不同时期产能带来的误差。通过在东方1-1气田的应用证实,与常规回压试井结果相比,此方法求取产能结果可靠。通过结合垂直管流计算程序,能够利用日常生产测试资料求取动态产能,对气藏的合理开发,具有重要的指导意义。According to the existing problems of single point method well test in gas reservoir, the productivity formula of the dynamic single point method is deducted. Through selecting a new test point, the formation pressure, bottom hole flowing pressure and production values are determined and the physical property parameters of natural gas can be calculated in the formation pressure condition. Combined with the results of well test, the value of a can be solved and the dynamic capacity can be calculated. The new method can overcome the error which using general regression coefficient to calculate the capacity of different period. Compared with conventional back pressure test, the results of the new method is reliable through application in DF1 - 1 gas field. Through a combination of vertical pipe flow calculation procedures, dynamic productivity can be calculated by using the daily production test data, which has the important guiding significance for reasonable development of gas reservoir.

关 键 词：动态一点法 产能系数 动态产能 气藏 

分 类 号：TE377[石油与天然气工程—油气田开发工程]