反褶积技术在不稳定试井解释中的应用

Application of deconvolution technology in unstable well test transient

试井作为油气藏评价的一项重要手段,在气田勘探开发中发挥着重要作用。对于渗透率较低的储层,利用短期的不稳定试井资料进行试井解释,双对数曲线往往难以反应出边界的特征,而应用反褶积算法进行气井试井解释,能够通过全程的压力生产史,根据叠加原理,得到测试全部历程的压力响应,从而获取更多的储层信息,为储层边界的识别提供可靠的依据,对不稳定试井解释技术是一个很好的补充和完善。

Well test takes an important means in oil and gas reservoir evaluation,playing an important role in the gas field exploration and development.For the low permeability reservoirs, with the data of short-term transient testing,interpretation,double logarithmic curve is often difficult to reflect the characteristics of the border.Deconvolution can obtain all the course of pressure response through the pressure throughout the production history,according to the superposition principle.Application of deconvolution can obtain more information on the boundary for the reservoir to provide reliable basis for the identification.Deconvolution is a good supplement to and improvement for the transient testing,interpretation of technology.