气井产能测试新方法——回压等时试井  

A NEW TESTING METHOD OF GAS WELL POTENTIAL:BACKPRESSURE ISOCHRONAL TEST

作　　者：唐俊伟[1] 马新华[1] 焦创赟 范丽宏[1] 

机构地区：[1]中国石油勘探开发研究院,北京100083 [2]长庆石油勘探开发研究院,陕西西安710032

出　　处：《天然气地球科学》2004年第5期540-544,共5页Natural Gas Geoscience

摘　　要："单点法"产能测试具有时间短、放空气量小的优点,但对低渗气藏,气井生产达到稳定需要很长时间,因此通过短时间测试确定的产能误差很大,不能准确评价气井的实际生产能力。以回压试井理论和渗流叠加原理为基础,提出了"回压等时试井"产能评价方法,该法所需测试时间与"单点法"大致相同,但能较准确地评价低渗气井产能。通过模拟井资料的检验,证明回压等时试井结果可靠。The single-point potential test has two merits. One is that in needs a short test time. Another is that the quantity of relief-gas is small. But it will cause a great error in evaluating a low permeability gas well productivity because the gas well will cost a long time to reach a pseudo steady state. To resolve the problem, based on backpressure test theory and superposition principle, this paper designed a new test method, named Backpressure Isochronal Test. It can accurately evlauate the productivity of gas wells with low permeability in a short test time which approximately equals to the time the single-point method needs. The analysis and contrast of analog wells reveal that the result is reliable.

关 键 词：气井 单点法 产能测试 等时 回压试井 新方法 

分 类 号：TE272[石油与天然气工程—油气井工程]