涩北气田产水特征分析

Analysis on Water Producing Characters in Sebei Gas-field

气井产水是影响气井产能和气田开发规律的重要因素之一。涩北气田气层主要受构造控制,局部受岩性控制,构造高部位气层多、厚度大,低部位气层少、厚度小。储层横向分布比较稳定,纵向变化较大,气水层交互,边水环绕,开发过程中出水现象普遍。从纵向上对比分析了涩北一号、涩北二号以及台南三大气田不同开发层位的产水情况,从平面上分析了各气田气井产水的分布情况,为该气藏的开发提供了重要的动态资料,对现场控制水量、延长稳产时间具有重要的指导意义。

Water production in gas wells was one of the important factors of impacting the gas well productivity and the rules of gas field development.In the Sebei Gas-field,gas reservoir was mainly controlled by structures,and locally controlled by lithology.There were more gas layers in high structural position with big thickness,there were less gas layers in lower structural position with small thickness.The lateral distribution of reservoir was relatively stable,while the longitudinal distribution changed largely,the gas layer and water layer were under interaction with surrounded edge water,water was produced in the development process.This paper longitudinally contrasts and analyzes water producing of the different development horizons in the three major gas fields,the distribution of water producing is analyzed in the plane,which provides very important dynamic data for the gas reservoir development,and is of significance for water production controlling and extending the time of stable production.