Application of non shut-in pressure build-up test technique in gas well

Abstract

By changing the gas production rate once time (from big production rate to little), measurement is made on build-up pressure changes continuously. Analyses of detection and well testing to 15 wells indicate that by using the technique the result being equivalent with shut-in pressure is obtained, testing time is short, loss of gas producing potential is reduced and production efficiency is raised. All of that provides strategic data for production of gas oilfield.