Analysis on Water Producing Characters in Sebei Gas-field

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.