反褶积在中东A油田试油解释中的应用

Application of Deconvolution in a Field Oil testing Interpretation

在中东地区的灰岩地层测试中,由于工作制度的安排关井压力资料不足以反映全部的地层信息,尝试采用反褶积方法将所录取的全部测试资料作为解释对象,获得了较为满意的结果。

Nantun formation and Tongbo formation are the principal target zones in Hailar basin where volcaniclastic rocks are widely developed.The rocks always contains tuff component and the tuffaceous content increases gradually from top to bottomd.Because the reservoirs contain both tuff and clay minerals, pore structure becomes complex and permeability gets worse. The interpretation model is not adaptive.By comparative analysis of three models based on the saturation of cation exchange capacity, and statistical analysis of the clay content in the primary target, the Waxman-Smith(Waxman-Smits) model is selected as the saturation model of this area based on the theory of cation exchange. The parameters of volcanic clastic reservoirs such as m,n and Qv are determined on classification. Through verification in sealed coring well, the mean absolute error is ±8.2%. It improves the computational accuracy of saturation parameters.