收稿日期: 2003-10-20
修回日期: 2004-04-09
网络出版日期: 2004-10-20
A NEW TESTING METHOD OF GAS WELL POTENTIAL:BACKPRESSURE ISOCHRONAL TEST
Received date: 2003-10-20
Revised date: 2004-04-09
Online published: 2004-10-20
唐俊伟, 马新华, 焦创斌贝, 范丽宏 . 气井产能测试新方法――回压等时试井[J]. 天然气地球科学, 2004 , 15(5) : 540 -544 . DOI: 10.11764/j.issn.1672-1926.2004.05.540
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.
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