异常气井压力梯度资料分析

Analysis of Pressure Gradient Data in Abnormal Gas Well

气井压力梯度测试可以用来判断井筒内的压力和流体状态的变化情况及井筒内相态变化及流动特性等,通过统计近三年的资料发现,引起气井压力梯度测试曲线异常的原因有:产气量小、井筒内雾气共存、积液、人为原因。针对产气量小和井筒内雾气共存引起的压力台阶不平稳的井,在测试过程中,通过调整测试深度,延长每个台阶的测试时间来解决。针对因积液引起压力梯度测试异常的井,进行及时排液,并在下一次测试中,对积液深度进一步加密来解决。

Gas pressure gradient test can be used to judge the well-bore pressure and fluid status changes and well-bore phase change and flow characteristics,through the statistics of data nearly three years,reasons for abnormal pressure gradient of gas well testing curve are gas production,coexistence of fog in well-bore,effusion,manmade. According to wells of small production volume and unstable pressure steps caused by the coexistence of the well-bore fog,in the testing process,through the adjustment of test depth,extension for each step of the test of time is to solve. For abnormal wells of pressure gradient test caused fluid,discharge is done timely,and in the next test,the depth of the effusion is further encrypted to solve.