反褶积在大庆外围中浅层气井试井解释中的应用

反褶积技术能够从短期分散的压力恢复资料中得出测试全部历程的压力响应,通过综合整个测试历程所探测到的信息,正确选择试井解释模型,减少其多解性,从而得出比常规试井解释更加可靠的结果。文中阐述了反褶积试井解释的原理及开展解释时的注意事项,并以扶余、杨大城子砂岩储层2口气井为例介绍了应用反褶积方法进行试井解释,从2口井的压力史拟合检验情况来看,压力史的吻合程度较高且解释结果与气井的实际情况也相符,说明反褶积方法是可靠的。

Application of deconvolution method in well test interpretation of middle-shallow gas well of peripheral Daqing Oilfield

Deconvolution method can obtain the pressure response of all testing courses from the dispersed and short-term data of pressure build-up.It can synthesize all detecting information during the whole testing period,help to determine well test model correctly and derive more reliable results compared with the method of conventional well test interpretation.This paper expounds the deconvolution principle of well test interpretation and the points for attention in the interpretation.It also introduces how to use the deconvolution method for well test interpretation in two gas wells of Fuyu and Yangdachengzi reservoirs.Pressure history of two gas wells has high coincidence degree from the fitting test situation and its interpretation results agree with the actual situation of gas well,which shows that the deconvolution method is reliable.