利用生产动态资料确定气井产能方程新方法  

A New Method of Using Dynamic Data to Determine Deliverability Equation of Gas Well

作　　者：胡俊坤 李晓平[2] 肖强 敬伟 

机构地区：[1]中国石油西南油气田公司天然气经济研究所,四川成都610501 [2]西南石油大学油气藏地质及开发工程国家重点实验室,四川成都610500 [3]中国石油青海油田冷湖油田管理处,甘肃敦煌736200 [4]中国石油青海油田井下工艺研发中心,甘肃敦煌736200

出　　处：《天然气地球科学》2013年第5期1027-1031,共5页Natural Gas Geoscience

基　　金：国家杰出青年科学基金"油气渗流力学"项目(编号:51125019)资助

摘　　要：利用生产动态资料确定气井产能方程主要包括2个方面内容:一是利用气井井口油压及相关参数,确定对应的井底流压;二是在井底流压确定的基础之上,确定储层的地层压力及气井产能方程。根据垂直管流中流体的质量守恒与动量守恒原理确定井底流压;而依据不关井试井理论确定地层压力。利用气井实际的生产动态资料,在井底流压与地层压力确定的基础之上,即可确定气井的产能方程。通过实例分析,验证了该方法的可行性及可靠性。Using dynamic data to determine deliverability equation of gas well mainly includes two aspects： On the one hand is to use tubing head pressure and correlating parameters of gas well to determine corre- sponding bottom hole flowing pressure,on the other hand is to determine formation pressure and deliver- ability equation of gas well on the basis of determinate bottom hole flowing pressure. Bottom hole flowing pressure is determined by mass conservation law and principle of conservation of momentum of fluid in ver- tical pipe;Formation pressure is determined by well test theory of well without shut-in. Using dynamic data of gas well,on the basis of determinate bottom hole flowing pressure and determinate formation pressure, the deliverability equation of gas well can be determined finally. The case study indicates that the method is practical and accurate.

关 键 词：气井 动态资料 垂直管流 不关井试井 产能方程 

分 类 号：TE332[石油与天然气工程—油气田开发工程]